Glossary for Movement symptoms

Medical terms related to Movement symptoms or mentioned in this section include:

• $1q deletion$: A rare chromosomal disorder where part of the long arm (q) of chromosome 1 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• $1q terminal deletion$: A rare chromosomal disorder where the terminal part of the long arm (q) of chromosome 1 is deleted resulting in various abnormalities.
• $2-Hydroxyglutaricaciduria$: A rare metabolic disorder characterized by high levels of a certain chemical (2-Hydroxyglutaric) which causes a serious progressive neurological disease and damage to the brain. The features of this disorder are variable and some cases are milder than others.
• $2-Methylbutyric Aciduria$: A very rare genetic disorder where an enzyme deficiency prevents the break down of certain proteins into energy and results in a harmful accumulation of acids in the blood and body tissues. More specifically, there is a deficiency of an enzyme (2-methylbutyryl-coenzyme A dehydrogenase) needed to convert the amino acid isoleucine into energy. 2-methylbutyrylglycine levels build up in the body and may cause damage. Symptoms vary according to the degree of enzyme deficiency - can range from asymptomatic to life-threatening.
• $2-methylbutyryl-coenzyme A dehydrogenase deficiency$: A very rare genetic disorder where an enzyme deficiency prevents the break down of certain proteins into energy and results in a harmful accumulation of acids in the blood and body tissues. More specifically, there is a deficiency of an enzyme (2-methylbutyryl-coenzyme A dehydrogenase) needed to convert the amino acid isoleucine into energy. 2-methylbutyrylglycine levels build up in the body and may cause damage. Symptoms vary according to the degree of enzyme deficiency - can range from asymptomatic to life-threatening.
• $22q11.2 deletion syndrome$: A rare genetic disorder caused by the absence of a small portion of genetic material. A small section of chromosome 22 is missing at a location called q11.2. Chromosome 22 is one of 23 pairs of chromosomes that exist in humans.
• $2q deletion$: A rare chromosomal disorder where part of the long arm (q) of chromosome 2 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• $3 alpha methylglutaconicaciduria, type 3$: A rare genetic condition where a gene mutation prevents the production of certain protein which leads to a build-up of an acid (3-methylglutaconic acid) which can have a negative impact on the body. The condition is characterized mainly by damage to the optic nerve.
• $3-$: A rare genetic disorder involving the deficiency of an enzyme (hydroxyacyl-coa dehydrogenase). The severity of the symptoms is highly variable with some cases resulting in death during the first decade while others suffer psychomotor and regression. Symptoms tend to be more severe in males who suffer progressive neurodegeneration whereas females tend to suffer mainly from developmental delay.
• $3-Hydroxyisobutyric aciduria$: A rare inborn metabolic disorder which causes brain and facial anomalies, seizures and growth problems.
• $3-methylglutaconic aciduria, type 1$: A recessively inherited metabolic disorder characterized by methylglutaconic acid in the urine.
• $3-methylglutaconic aciduria, type 4$: A rare genetic disorder where the body's cells are unable to make sufficient energy resulting in an accumulation in the body of 3-methylglutaconic acid. Type 4 is characterized by symptoms which overlap type 1 and 3.
• $3q deletion$: A rare chromosomal disorder where part of the long arm (q) of chromosome 3 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• $4-hydroxyphenylacetic aciduria$: A urinary abnormality usually caused by the deficiency of a particular enzyme (4-hydroxyphenylpyruvic acid oxidase). The urine contains excess 4-hydroxyphenylacetic acid.
• $47,XXX syndrome$: A genetic condition where females have an extra X chromosome in each of their cells. Normally female cells have two X chromosomes. This is not usually an inherited condition but a defect that occurs during cell division. Often the condition is asymptomatic.
• $4p16.3 deletion$: A rare genetic disorder where a portion of chromosome 4 is deleted at a location called 16.3. The condition is characterized by malformations in most parts of the body as the deletion affects growth and development of the fetus.
• $7p2 Monosomy Syndrome$: A rare chromosomal disorder where there is one copy of the end of the short arm (p) of chromosome 7 rather than the normal two. The type and severity of symptoms is determined by the location and size of the genetic material deleted.
• ACAD8 deficiency: An extremely rare metabolic disorder where the body is unable to metabolize certain proteins properly. More specifically, an insufficient level of the enzyme (isobutyryl-coenzyme A dehydrogenase) needed to metabolize the amino acid valine. The onset and severity of symptoms is variable.
• ADANE: A potentially fatal inherited neurological disease involving brain lesions. Symptoms tend to occur during childhood after an illness involving a fever. The disease is similar to Leigh syndrome but the course is acute rather than chronic.
• ADD: Attention Deficit Disorder (ADD) is a mental and behavioral disorder characterized by behavioral problems such as hyperactivity, inattention, concentration difficulty, and other mental symptoms. The related description Attention Deficit Hyperactivity Disorder (ADHD) may be a more modern description of the disease.

  Misdiagnosis of ADD is a well-known controversy in the sense that cases of hyperactivity in children may be over-diagnosed. There is a tendency for parents to seek and doctors to prescribe the drug Ritalin even in cases where the diagnosis of ADD or ADHD may be incorrect. Alternative diagnoses include normal child behavior (i.e. just an active child), food intolerances, or other behavioral disorders (see misdiagnosis of ADD).

  On the other hand, ADD is under-diagnosed in adults, with a large number of adults having ADD without knowing it; see misdiagnosis of Adult ADD.

• ADHD: Attention Deficit Hyperactivity Disorder (ADHD) is a mental and behavioral disorder characterized by behavioral problems such as hyperactivity, inattention, concentration difficulty, and other mental symptoms. Typically, ADHD and associated hyperactivity is known as a childhood disorder, although ADD/ADHD in adults is known to be under-diagnosed. It is distinguished from Attention Deficit Disorder (ADD) which has a reduced focus on hyperactivity type symptoms.
• ATR-X syndrome: A rare X-linked disorder that affects males and is characterized by mental retardation and alpha thalassemia.
• Abdominal muscle strain: Damage to the abdominal muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Abscess: This is an area of puss collected in a cavity which is constituted by necrotised tissue
• Absence of septum pellucidum and septo-optic dysplasia: A rare birth defect where a thin membrane in the middle of the brain is missing. This brain abnormality is never present on it's own but is a characteristic of septo-optic dysplasia where the patient also has optic disk abnormalities and pituitary deficiencies.
• Absent corpus callosum - cataract - immunodeficiency: A rare syndrome characterized by immunodeficiency, cleft lip or palate, cataract, reduced pigmentation and brain abnormalities.
• Acanthamoeba infection: Infection with a microscopic, free-living ameba that is readily found in the environment - soil, air and water. Most people exposed to the ameba will not become infected but when infections do occur, they tend to affect the eyes, central nervous system or can cause widespread infection throughout the body.
• Acanthamoeba infection of the central nervous system: Infection by an amoebic organism called Acanthamoeba. Infection usually occurs when the amoeba enters through a break in the skin or through the nose. Infection can be localized or systemic where it can involve the central nervous system and cause potentially fatal meningoencephalitis. Infection of the eye can occur by cleaning contact lenses in contaminated water.
• Acanthocytosis: A rare disorder where most of the red blood cells are abnormal with spiny projections due to lipid abnormalities. The blood abnormality is seen in conditions such as abetalipoproteinemia, severe liver disease and severe malnutrition. Symptoms and prognosis depend on the underlying disorder.
• Accelerated hypertension: Accelerated hypertension is a condition characterized by a rapid increase in blood pressure. The condition is a medical emergency which can cause organ damage if not treated promptly.
• Aceruloplasminemia: A rare genetic disorder characterized by a lack of the protein ceruloplasmin in the blood resulting in a buildup of iron in the liver, brain and pancreas. This in turn causes diabetes and degeneration of the neural system causing tremors and walking abnormalities.
• Achalasia - Addisonianism - Alacrimia syndrome: A rare inherited disorder characterized mainly by achalasia, alacrimia (absent tears) and Addison's disease. Addison's disease involves adrenal insufficiency due to a resistance to adrenocorticotropic hormone. Only about 70 cases reported worldwide.
• Achalasia - addisonianism - alacrima syndrome: A rare inherited disorder characterized mainly by achalasia, alacrimia (absent tears) and Addison's disease. Addison's disease involves adrenal insufficiency due to a resistance to adrenocorticotropic hormone. Only about 70 cases reported worldwide.
• Achalasia - adrenal - alacrima syndrome: A familial disorder characterized by adrenal gland-related hormonal problems, swallowing difficulty (achalasia) and a lack of tears (alacrima). Neurological impairment and motor and sensory neuropathy is progressive. The adrenal glands in patients are resistant to the ACTH hormone and hence fails to operate normally.
• Acid-Base Imbalance: A disruption to the normal acid-base equilibrium in the body. There are four main groups of disorder involving an acid-base imbalance: respiratory acidosis or alkalosis and metabolic acidosis or alkalosis. Obviously the severity of symptoms is determined by the degree of imbalance.
• Acidemia, isovaleric: A rare genetic condition where the body can't process proteins adequately. More specifically, there are insufficient levels of the enzyme needed to break down an amino acid called leucine. This results in a build up of isovaleric acid which can harm the brain and nervous system. Some people suffer severe symptoms from birth and others suffer milder symptoms that come and go and are affected by such things as infections or consumption of high protein food.
• Acidemia, methylmalonic: An inborn error of metabolism where amino acids in the body aren't metabolized properly resulting in high levels of the acid throughout the body.
• Acidic dry cell batteries inhalation poisoning: Acidic dry cell batteries contain toxic chemicals which can cause symptoms if inhaled. The smoke emitted from burning batteries can also cause poisoning symptoms if sufficient quantities are inhaled. The type and severity of symptoms varies depending on the amount of chemical involved.
• Ackee Fruit Food poisoning: Unripe ackee fruit contains a chemical called hypoglycin A and B which affect the central nervous system and fatty acid oxidation. Eating the unripe fruit can cause symptoms can occur in as little as two hours but is generally 6 to 48 hours. The ackee fruit is found mainly in Jamaica, West Africa, Central America, Sought Florida, southern California and Hawaii.
• Acquired hypothyroidism: Acquired hypothyroidism is a condition where the thyroid gland makes too little or no thyroid hormone. Acquired hypothyroidism can be caused by both thyroid disease (primary hypothyroidism) and hypothalamic-pituitary disease (central hypothyroidism)
• Acrocallosal Syndrome (Schinzel Type): A rare condition characterized by absence of portion of the brain (corpus callosum), mental deficiency, duplicated toes, mental deficiency and other abnormalities.
• Acrocallosal syndrome: A rare genetic disorder characterized by underdeveloped or absent corpus callosum of brain, duplication of thumb or big toe and extra fingers or toes.
• Acromesomelic dysplasia Brahimi Bacha type: A very rare genetic malformation syndrome characterized primarily by developmental abnormalities of the face and skeletal bones.
• Acromesomelic dysplasia Hunter Thompson type: A rare genetic syndrome characterized by various severe developmental abnormalities of the skeletal bones.
• Acromesomelic dysplasia, Maroteaux type: A rare genetic syndrome characterized by various developmental abnormalities of the skeletal bones and facial anomalies.
• Acromicric dysplasia: A rare genetic syndrome characterized by various severe developmental abnormalities of the skeletal bones and facial anomalies.
• Acute Bokhoror: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. Death is common in the acute phase of the infection which can last from four days to four months.
• Acute Disseminated Encephalomyelitis: A type of encephalitis that usually follows an acute viral infection and involves an immune attack on myelin tissue which is part of the nervous system. Initial symptoms include fever, headache, vomiting and drowsiness followed by seizures, coma and paralysis. Often results in permanent neurological disorders.
• Acute Pesticide poisoning - xylene: Xylene is an ingredient used in certain insecticides. Exposure to the chemical can cause a range of symptoms depending on the level and route of exposure. Exposure can occur through inhalation, ingestion, the skin or eyes. Acute exposure involves a exposure over a short period of time whereas chronic exposure occurs over a longer period of time.
• Acute VE: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. Death is common in the acute phase of the infection which can last from four days to four months.
• Acute Viliuisk Encephalitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. Death is common in the acute phase of the infection which can last from four days to four months.
• Acute Viliuisk Encephalomyelitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. Death is common in the acute phase of the infection which can last from four days to four months.
• Acute Vilyuisk Encephalitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. Death is common in the acute phase of the infection which can last from four days to four months.
• Acute Vilyuisk Encephalomyelitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. Death is common in the acute phase of the infection which can last from four days to four months.
• Acute headache: Headache, or cephalgia, is defined as diffuse pain in various parts of the head, with the pain not confined to the area of distribution of a nerve.
• Acute idiopathic polyneuritis: An inflammatory disorder of the peripheral nerves The condition is characterized by weakness, numbness or tingling in the legs or arms or occasionally loss of movement and feeling in the legs, arms, upper body and face. Some patients have minor symptoms and others suffer severe symptoms such as paralysis. Also called Guillain-Barre syndrome, infectious polyneuritis or acute febrile polyneuritis.
• Acute intermittent porphyria: A rare inherited metabolic disorder caused by a disturbed porphyrin metabolism resulting in increased production of porphyrin or its precursors. Symptoms include abdominal pain, photosensitivity and neurological disturbances such as seizures, coma, hallucinations and respiratory paralysis.
• Acute meningitis: Acute meningitis is a form of meningitis caused by bacteria that normally lives in the mouth and throat. When the immune system is unable to supress this bacteria, it travels to the cerebrospinal spinal fluid in the brain. From there it affects the membranes surrounding the brain.
• Acute rheumatic fever: Bacterial joint infection with risk of heart complications.
• Acyl-CoA dehydrogenase, short chain, deficiency of: A rare disorder where the body lacks enzymes needed to convert some fats (short-chain fatty acids) into energy. Symptoms are exacerbated by fasting or acute illness. The severity of symptoms is variable with some patients remaining virtually asymptomatic their whole life while other suffer symptoms from infancy.
• Adams Nance syndrome: A rare genetic disorder characterized by rapid heartbeat, high blood pressure, small eyes and the presence of excess glycine in the urine.
• Adducted thumb syndrome recessive form: A rare recessively inherited disorder characterized mainly by a small head, arthrogryposis (joint contractures), cleft palate and various other abnormalities.
• Adducted thumbs - arthrogryposis, Christian type: A rare recessively inherited disorder characterized mainly by a small head, arthrogryposis (joint contractures), cleft palate and various other abnormalities.
• Adenylosuccinate lyase deficiency: A rare inherited disorder characterized by a deficiency of the enzyme called adenlyosuccinate lyase which generally results in psychomotor retardation and autistic behavior.
• Adrenal Cancer: A malignant cancer that develops in the adrenal gland. The tumor may be nonfunctioning (does not produce hormones) or functioning in which case excessive levels of hormones can cause a variety of symptoms depending on which hormone is involved. Adrenal hormones made in the cortex (outer part of the gland) are aldosterone, corticosteroids and androgenic steroids. Adrenalin and noradrenalin are the hormones made in the medulla (central part of the adrenal gland).
• Adrenal Cortex Neoplasms: A tumor that develops in the adrenal gland. The tumor may be nonfunctioning (does not produce hormones) or functioning in which case excessive levels of hormones can cause a variety of symptoms depending on which hormone is involved. Adrenal hormones made in the cortex (outer part of the gland) are aldosterone, corticosteroids and androgenic steroids.
• Adrenal adenoma, familial: A benign tumor that develops in the adrenal gland and tends to run in families. The tumor may be nonfunctioning (does not produce hormones) or functioning in which case excessive levels of hormones can cause a variety of symptoms depending on which hormone is involved. Adrenal hormones made in the cortex (outer part of the gland) are aldosterone, corticosteroids and androgenic steroids . Adrenalin and noradrenalin are the hormones made in the medulla (central part of the adrenal gland).
• Adrenal gland hyperfunction: Excessive activity of the adrenal gland which causes excessive production of one or more adrenal hormones (aldosterone, corticosteroids, androgenic steroids, epinephrine and norepinephrine). The increased adrenal gland activity may be caused by an adrenal gland tumor or by excessive stimulation of the gland. Pituitary hormones stimulate adrenal gland activity.
• Adrenal incidentaloma: A tumor of the adrenal gland that is discovered incidentally while performing an imaging examination for reasons other than an adrenal tumor. The tumor may be asymptomatic or can causes excessive secretion of adrenal hormones and resulting symptoms. The tumor may also be malignant or benign.
• Adrenal medulla neoplasm: A tumor that develops in the part of the adrenal gland called the medulla which produces adrenalin and noradrenaline. The tumor is usually benign but can be malignant.
• Adrenocortical carcinoma: A condition which is characterized by malignancy which affects the adrenocortex.
• Adrenoleukodystrophy: A rare hereditary metabolic disease that only occurs in male children and is characterized by adrenal atrophy and extensive cerebral demyelination causing progressive loss of mental functioning, aphasia, apraxia and sometimes blindness. The patient usually dies within 5 years.
• Adrenoleukodystrophy, autosomal, neonatal form: A rare inherited disorder involving the adrenal glands, testes and certain parts of the brain (white matter). It is a less severe form of leukodystrophy where an abnormality within the body cells prevents the metabolism of certain fats (long chain fatty acids).
• Adult low grade infiltrative supratentorial Astrocytoma: A type of brain cancer that occurs in the supratentorial region of the brain of adults and is relatively non-aggressive.
• Adult progressive spinal muscular atrophy, Aran Duchenne type: A group of inherited motor neuron diseases involving progressive muscle weakness, wasting and paralysis due to degeneration of motor neurons in the spinal cord. Muscle weakness and wasting usually starts in the hands and may gradually spread to other muscle groups.
• Adult-onset ALD: Form of ALD in adults.
• African Sleeping sickness: A disease caused by parasites (Trypanosome brucei gamiense or T. brucei rodesiense) and transmitted to humans by the tsetse fly which is found only in Africa. Causes symptoms such as fever, chills, headache, anemia, edema of hands and feet, enlarged lymph glands, lethargy, sleepiness, convulsions and coma. Also called African trypanosomiasis and sleeping sickness.
• Agenesis of the corpus callosum: Congenital absence of connective part of the brain.
• Agnathia-holoprosencephaly-situs inversus: A very rare disorder characterized by a small or absent jaw, developmental brain defect and internal organs situated on the wrong side of the body (situs inversus). The severity and range of symptoms is variable.
• Agyria-pachygyria type 1: Abnormal brain development where the brain fails to develop normally during the fetal stage.
• Aicardi syndrome: A rare genetic disorder where the structure connecting the two halves of the brain fails to develop which results in seizures and eye abnormalities .
• Aicardi-Goutieres syndrome: A rare inherited progressive disease that affects the brain and immune system.
• Aicardi-Goutieres syndrome 1: A rare inherited progressive disease that affects the brain and immune system. Type 1 is caused by a defect on chromosome 3p21.3-p21.2.
• Aicardi-Goutieres syndrome 2: A rare inherited progressive disease that affects the brain and immune system. Type 2 is caused by a defect on chromosome 13q14-q21.
• Aicardi-Goutieres syndrome 3: A rare inherited progressive disease that affects the brain and immune system. Type 3 is caused by a defect on chromosome 11q13.2.
• Aicardi-Goutieres syndrome 4: A rare inherited progressive disease that affects the brain and immune system. Type 4 is caused by a defect on chromosome 19p13.13.
• Aicardi-Goutieres syndrome 5: A rare inherited progressive disease that affects the brain and immune system. Type 5 is caused by a defect on chromosome 3p21.3-p21.2.
• Akesson syndrome: A very rare syndrome characterized by excessive skin folds and furrows on the scalp, mental retardation the failure of the thyroid to develop.
• Al Gazali - Nair syndrome: A very rare syndrome characterized by bone abnormalities, eye problems, seizures and developmental delay. The reported cases involved related parents.
• Al Gazali Sabrinathan Nair syndrome: A very rare syndrome characterized by bone and eye problems, seizures and mental retardation.
• Albright's hereditary osteodystrophy: A rare genetic disorder where the body fails to recognize and respond to the parathyroid hormone. The parathyroid hormone is involved in controlling the blood levels of calcium and phosphate.
• Alcohol Withdrawal: Symptoms that occur when alcohol consumption is discontinued or reduced. Symptoms may vary depending on the level of dependence.
• Alcohol abuse: Excessive alcohol as a symptom of other conditions
• Alcohol drinking: The consumption of a drink containing alcohol. Alcohol consumption can cause varying degrees of impairment depending on the amount consumed. Consuming very large amounts of alcohol can lead to death.
• Alcohol-Induced Disorders: Disorders caused by excessive alcohol consumption. The symptoms are variable depending on the disorder involved. Some of the disorders are: alcohol abuse, alcohol dependence, alcohol intoxication, alcohol withdrawal, alcohol intoxication delirium, alcohol withdrawal delirium, alcohol-induced persisting dementia, alcohol-induced persisting amnestic disorder, alcohol-induced psychotic disorder, alcohol-induced mood disorder, alcohol-induced anxiety disorder, alcohol-induced sexual dysfunction, alcohol-induced sleep disorder, liver damage, liver cancer and esophageal cancer.
• Alcoholic intoxication: The excessive consumption of alcohol can have toxic effects on the body and can ultimately result in death in severe cases.
• Alexander Syndrome: Brain myelin disorder causing mental degeneration.
• Alkalosis: A condition that iscaused by the accumulation of base in the body.
• Alkaptonuria: A rare inherited metabolic disease characterized by homogentisic aciduria, arthritis and ochronosis. Symptoms include darkening of urine, alkinization due to overproduction of homogentisic acid, arthritis in the large joints and black ochronotic pigmentation of cartilage and collagen tissue. However, many of these symptoms may not occur until middle age. The condition may also be caused by chronic phenol poisoning.
• Allain Babin Demarquez syndrome: A rare syndrome characterized by premature fusion of skullbones, abnormal development of skeletal bones and hypertension.
• Allan-Herndon-Dudley Syndrome: A very rare inherited disorder characterized primarilty by mental retardation.
• Allergic encephalomyelitis: An autoimmune brain and spinal cord disease that can be induced in laboratory animals in experimental settings. The disease involves inflammation and degeneration of nerve myelin sheaths and it may be acute or chronic.
• Alopecia mental retardation syndrome: A rare syndrome characterized primarily by a lack of hair and mental retardation.
• Alopecia, epilepsy, oligophrenia syndrome of Moynahan: A rare condition characterized by alopecia, epilepsy, mental retardation and a small head.
• Alopecia, epilepsy, pyorrhea, mental subnormality: A rare syndrome characterized by alopecia, epilepsy, mental retardation and pus-producing gum and tooth inflammations.
• Alpers Syndrome: A rare syndrome characterized by liver disease, seizures and progressive, episodic psychomotor retardation.
• Alpha-N-acetylgalactosaminidase deficiency, Type III: A very rare enzyme deficiency (N-acetyl-alpha-D-galactosaminidase) which can occur in three forms: type I (infantile-onset neuroaxonal dystrophy), type II or Kanzaki disease (adult-onset) and type III (mild or moderate form).
• Alpha-ketoglutarate dehydrogenase deficiency: A metabolic disorder characterized by a deficiency of Alpha-ketoglutarate dehydrogenase which results in high levels of oxoglutaric acid in the urine as well as other severe symptoms.
• Alternating Hemiplegia: Episodes of one-sided paralysis.
• Aluminium toxicity: High body levels of aluminium resulting in symptoms. Usually occurs in patients with renal impairment.
• Alveolar Hydatid Disease: Rare multi-organ tapeworm infection caught from animals.
• Alzheimer disease 10: An inherited form of Alzheimer's. Type 10 is caused by a genetic defect on chromosome 10p13.
• Alzheimer disease 12: An inherited form of Alzheimer's. Type 12 is caused by a genetic defect on chromosome 8p12-q22.
• Alzheimer disease 13: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 1q21. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease 14: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 1q25. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease 15: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 3q22-q24. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease 16: Alzheimer disease 16 (late-onset) is a form of Alzheimer's disease that is linked to a defect on chromosome Xq21.3. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease 2, late-onset: Alzheimer disease 2 (late-onset) is a form of Alzheimer's disease that is linked to a defect on chromosome 19q13.2. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease 3, (early-onset Alzheimer disease): Alzheimer disease 3 is an early-onset form of Alzheimer's disease that is linked to a defect on chromosome 14q24.3. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease 5: An inherited form of Alzheimer's. Type 5 has a late onset and is caused by a genetic defect on chromosome 12p11.
• Alzheimer disease 6: A genetic form of Alzheimer's. Type 6 has a late onset and is caused by a genetic defect on chromosome 10q24.
• Alzheimer disease 7: An inherited form of Alzheimer's. Type 7 is caused by a genetic defect on chromosome 10p13.
• Alzheimer disease 8: An inherited form of Alzheimer's. Type 8 is caused by a genetic defect on chromosome 20p.
• Alzheimer disease 9: A genetic form of Alzheimer's. Type 9 has a late onset and is caused by a genetic defect on chromosome 19p13.2.
• Alzheimer disease type 1: A degenerative brain disease characterized primarily by progressive dementia. Type 1 has an early onset (starts before the age of 65). It is caused by mutations in the APP gene which results in the production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
• Alzheimer disease type 4: A degenerative brain disease characterized primarily by progressive dementia. Type 4 has an early onset (starts before the age of 65). It is caused by mutations in the PSEN2 gene which results in the production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
• Alzheimer disease, early-onset, with cerebral amyloid angiopathy: An early-onset form of Alzheimer's disease that is linked to a defect on chromosome 21q21. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease, familial: A degenerative brain disease characterized primarily by progressive dementia. The familial form is very rare and is completely inherited and has an early onset (usually in the 4th decade). It occurs when there is excessive production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
• Alzheimer disease, familial, 1: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 21q. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease, familial, 11: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 9p22.1. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease, familial, 3, with spastic paraparesis and apraxia: This form of Alzheimer's is an early-onset form of Alzheimer's that is linked to a defect on chromosome 14q24.3. It is characterized by features which are atypical for Alzheimer's - spastic paraparesis which occurs before the dementia symptoms and apraxia. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease, familial, 3, with spastic paraparesis and unusual plaques: This form of Alzheimer's is an early-onset form of Alzheimer's that is linked to a defect on chromosome 14q24.3. It is characterized by features which are atypical for Alzheimer's - spastic paraparesis which occurs before the dementia symptoms and unusual plaques in the brain. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease, familial, 4: An inherited form of Alzheimer's disease that is linked to a defect on chromosome 1q31-q42. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Alzheimer disease, familial, type 3: A degenerative brain disease characterized primarily by progressive dementia. Type 3 has an early onset (starts before the age of 65). It is caused by mutations in the PSEN1 gene which results in the production of a toxic protein (amyloid beta peptide) in the brain which collects into clumps (amyloid plaques) in the brain. These plaques cause damage to nerve cells in the brain.
• Alzheimer's disease: A progressive degenerative disease of the brain of unknown cause
• Alzheimer's disease without Neurofibrillary tangles: A form of Alzheimer's that involves only plaques and no neurofibrillary tangles. This form tends to have an older age of onset and death and a shorter disease duration.
• Amelo-cerebro-hypohidrotic syndrome: A rare syndrome involving degeneration of the central nervous system, seizures and abnormal tooth development.
• Aminoacylase 1 deficiency: A rare genetic disorder caused by an enzyme (aminoacylase-1) deficiency. There is still uncertainty whether the deficiency actually causes any of the symptoms observed in patients.
• Amnesic shellfish poisoning: Rare shellfish poisoning sometimes causing amnesia.
• Amphetamine abuse: Use of the stimulant drugs known as amphetamines or "speed"
• Ampola syndrome: A rare genetic disease characterized primarily by mental retardation, facial anomalies, short stature, seizures and finger and toe abnormalities.
• Amyloid angiopathy: A blood vessel disorder caused by abnormal amyloid deposits in the blood vessel walls of the brain. The deposits can cause the blood vessel to become weak and rupture resulting in intracranial bleeding. Despite the potentially serious consequences the disorder is often asymptomatic until old age.
• Amyloidosis VII: Amyloidosis involves the abnormal deposit of a substance called amyloid in various parts of the body. In the Ohio type, the amyloid deposits in the leptomeningeal blood vessels, brainstem, spinal cord and eye causing central nervous system dysfunction, brain hemorrhages as well as vision impairment.
• Amyloidosis, familial cutaneous: Amyloidosis involves the abnormal deposit of a substance called amyloid in various parts of the body. The familial cutaneous form is characterized by brown skin pigmentation as well as systemic symptoms such as failure to thrive, developmental delay, gastrointestinal problems and pneumonia.
• Amyloidosis, oculoleptomeningeal: Amyloidosis involves the abnormal deposit of a substance called amyloid in various parts of the body. In this particular type, the amyloid deposits in the leptomeningeal blood vessels, brainstem, spinal cord and eye causing central nervous system dysfunction, brain hemorrhages and vision impairment.
• Amyoplasia: A rare condition characterized by congenital joint stiffness.
• Amyotrophic lateral sclerosis: A degenerative motor neuron disease marked by weakness and wasting of the muscles which starts at the hands and legs and spreads to the rest of the body. Death occurs in 2 to 5 years. Also called Lou Gehrig's disease or wasting palsy.
• Amyotrophic lateral sclerosis 2, juvenile: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 2 is caused by a defect on chromosome 2q33.
• Amyotrophic lateral sclerosis 3: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 3 is caused by a defect on chromosome 18q21.
• Amyotrophic lateral sclerosis 4, juvenile: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 4 is caused by a defect on chromosome 9q34.
• Amyotrophic lateral sclerosis 5: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 5 is caused by a defect on chromosome 15q15.1-q21.1.
• Amyotrophic lateral sclerosis 6: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 6 is caused by a defect on chromosome 16q12.
• Amyotrophic lateral sclerosis 7: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 7 is caused by a defect on chromosome 20p13.
• Amyotrophic lateral sclerosis 8: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 9 is caused by a defect on chromosome 20q13.3 and is a dominantly inherited, late-onset form.
• Amyotrophic lateral sclerosis, 9: An inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 9 is differentiated by the origin of the genetic defect involved (14q11).
• Amyotrophic lateral sclerosis, familial type 1: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 1 is characterized by adult onset and relatively fast progression of symptoms. It usually occurs in an autosomal dominant pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 2: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 2 is characterized by childhood or adolescent onset of symptoms which progress very slowly over decades. It occurs in an autosomal recessive pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 3: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 3 is characterized late adulthood onset of symptoms which progress slowly over 5 years. It occurs in an autosomal dominant pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 4: A generally fatal progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 4 is characterized by the onset of symptoms before the age of 25 and slow progression over the next few decades. It occurs in an autosomal dominant pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 5: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 6 is characterized adolescent onset of symptoms with progression varying between 1 and 20 years. It occurs in an autosomal recessive pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 6: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 6 is characterized adult onset of symptoms with progression varying between 1 and 20 years. It occurs in an autosomal dominant pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 7: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 7 is characterized adult onset of symptoms with progression varying between less than 5 years to several decades. It occurs in an autosomal dominant pattern of inheritance.
• Amyotrophic lateral sclerosis, familial type 8: A generally fatal, inherited progressive disease where destruction of motor nerves in the spinal cord and brain stem cause progressive muscle weakness and wasting. Type 8 is characterized by adult onset and relatively slow progression of symptoms. It occurs in an autosomal dominant pattern of inheritance.
• Amyotrophic lateral sclerosis, type 6: An inherited disorder involving progressive degeneration of motor neurons which results in muscle weakness and wasting. Type 6 is caused by a defect on chromosome 16q12.
• Anchovy poisoning (clupeotoxin): Some anchovies contain toxins (Clupeotoxin) which can be poisonous to humans if eaten. Heat does not destroy the toxin and there is still uncertainty as to the origin of the toxin. The toxin appears to be present in higher concentrations in summer and is believed to be possible linked to the consumption of toxic food in its food web. The size and age of the anchovy does not appear to be related to the toxicity. The anchovies are found in coastal waters off Africa and the Caribbean, Indian and Pacific Oceans.
• Anemia, sideroblastic spinocerebellar ataxia: A rare inherited condition characterized by anemia at birth as well as spinocerebellar ataxia (impaired ability to control voluntary movements).
• Aneurysm, intracranial berry: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms.
• Aneurysm, intracranial berry, 1: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 1 is caused by a defect on chromosome 7q11.2.
• Aneurysm, intracranial berry, 2: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 2 is caused by a defect on chromosome 19q13.
• Aneurysm, intracranial berry, 3: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 3 is caused by a defect on chromosome 1p36.13-p34.3.
• Aneurysm, intracranial berry, 4: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 4 is caused by a defect on chromosome 5p15.2-14.3.
• Aneurysm, intracranial berry, 5: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 5 is caused by a defect on chromosome 2p13.
• Aneurysm, intracranial berry, 6: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are now six different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases an individuals risk for developing intracranial berry aneurysms. Type 6 is caused by a defect on chromosome 9p21.
• Aneurysm, intracranial berry, 7: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 7 is caused by a defect on chromosome 11q24-q25.
• Aneurysm, intracranial berry, 8: A bulge in a blood vessel in the brain. The bulge can rupture causing a stroke. They usually form as a result of high blood pressure and weak blood vessel walls in the brain. There are five different subtypes of intracranial berry aneurysms with each one caused by a defect in different gene. The defective gene increases and individuals risk for developing intracranial berry aneurysms. Type 8 is caused by a defect on chromosome 14q23.
• Aneurysmal subarachnoid haemorrhage: Bleeding in the space around the brain that occurs from a leak in a weakened or dilated blood vessel under the arachnoid layer of the brain. Death can occur if treatment is not prompt.
• Angelman syndrome: A rare genetic disorder characterized by a puppet-like gait, fits of laughter and characteristic facial features.
• Angelman-Like Syndrome, X-linked: A very rare syndrome characterized mainly by mental retardation, mutism, facial anomalies, epilepsy and weak eye muscles. Males tended to have severe mental retardation whereas female carriers had mild or no mental retardation. Patients do eventually walk but then often lose this ability by the age of 10 years. Female carriers tend to have mild symptoms and males have severe symptoms - symptoms are variable to some degree.
• Angiokeratoma - mental retardation - coarse face: A rare inherited genetic syndrome characterized by mental retardation, coarse facial features and capillary hemangiomas.
• Angiomatosis, diffuse corticomeningeal, of Divry and Van Bogaert: A rare condition characterized by diffuse sclerosis and clusters of capillaries in parts of the brain as well as a marbled appearance to the skin.
• Angiostrongyliasis: Infection by a parasitic worm (Angiostrongylus). Infection can occur through eating contaminated raw animals such as snails, slugs, prawns or crabs which act as hosts to these parasites.
• Aniridia cerebellar ataxia mental deficiency: A rare inherited disorder characterized by a partial absence of the iris, mental retardation and impaired coordination of voluntary movements.
• Ankle Osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the ankle joint as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Ankle clonus: a rhythmic contraction of the calf muscles following a sudden dorsiflexion of the foot, the leg being semiflexed
• Ankle spasm: A sudden involuntary contraction of the muscles surrounding the ankle joint.
• Ankylosing Spondylitis: A form of chronic inflammation of the spine which may also affect joints in the shoulder, hip, neck, ribs and jaw. May result in loss of mobility. Also called Marie-Strumpell disease.
• Ankylosis: Stiffness or fusion of a joint leading to loss of mobility.
• Anophthalmia - hypothalamo-pituitary insufficiency: A rare syndrome characterized mainly by small or absent eyes and malformations of the hypothalamus and pituitary gland.
• Anophthalmia - hypyothalamo-pituitary insufficiency: A rare syndrome characterized mainly by small or absent eyes and malformations of the hypothalamus and pituitary gland.
• Anoxia: A condition marked by a lack of oxygen.
• Antepartum Eclampsia: Antepartum eclampsia is the development of seizures or coma in pregnant women suffering from high blood pressure. Antepartum means that it occurs before delivery. Eclampsia is a serious condition which requires urgent medical treatment. Eclampsia may be associated with moderate as well as significant increases in blood pressure. The blood pressure can return to normal after delivery or may persist for a period of time.
• Antley-Bixler Syndrome: A rare genetic disorder characterized by premature closing of skull bones, choanal atresia and craniofacial and limb abnormalities.
• Antley-Bixler-like syndrome - ambiguous genitalia - disordered steroidogenesis: A rare genetic disorder involving a deficiency of an enzyme (cytochrome P450 oxidoreductase) which causes steroid abnormalities. The condition results in ambiguous genitalia in females due to excessive androgen during fetal growth. Patients can also have the bone symptoms of Antley-Bixler syndrome.
• Anxiety disorder: A mental condition that is characterized by anxiety and avoidance behaviours
• Apallic syndrome: A persistent vegetative state caused by brain damage.
• Apraxia: A disorder of skilled movement not due to tremors, weakness, akinesia or abnormal tone or posture.
• Apricot seed poisoning: Apricot seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the pit remains intact and therefore poisoning usually occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual. Most parts of the apricot plant contain the toxic chemical with the highest concentration in young leaves. Different species of apricots have different levels of toxic chemical. Severe symptoms or even death can occur if children consume more than ten kernels or adults consume more than forty kernels. Theories exist that apricot kernels may help cancer sufferers but there has been no scientific studies that have proven this.
• Arachnoid Cysts: A rare disorder involving a fluid-filled cysts on the arachnoid membrane which is one of the thin layers of tissue that form a membrane which covers the spinal cord and brain. The type and severity of symptoms is determined by the size and location of the cyst.
• Arachnoiditis: A progressive disorder where the arachnoid membrane becomes inflamed and the brain and spinal cord may also become inflamed.
• Arakawa's syndrome 2: An inherited metabolic disorder where an enzyme deficiency (methionine synthase) causes mental and physical retardation, blood disorders, degeneration of brain tissue and various other symptoms.
• Arbovirosis: An infectious disease caused by an arbovirus. The virus is transmitted by arthropods such as insects and ticks. Examples of arboviruses include Yellow Fever, Japanese encephalitis and tick-borne encephalitis. The symptoms may vary depending on the type of virus involved. The infection can lead to life-threatening brain inflammation.
• Arginase deficiency: A very rare urea cycle disorder caused by a deficiency of the enzyme (arginase) needed to convert ammonia to the urea which can then be removed in the urine. The condition leads to excess build-up of ammonia in the body which is toxic to the nervous system.
• Argininosuccinic aciduria: A rare inherited disorder of the urea cycle characterized by the lack of an enzyme (argininosuccinate lyase) which is needed to remove nitrogen from the body so a lack of the enzyme leads to a build-up of ammonia in the blood.
• Arizona Bark Scorpion poisoning: A bite from the Arizona Bark scorpion contains chemicals toxic to the nerve system and can cause serious, life-threatening symptoms.
• Arm spasm: A sudden involuntary contraction of a muscle or of muscles in the arm.
• Arnold-Chiari malformation type 3: An extremely rare malformation where the base of the brain enters into the upper spinal canal. Type 3 involves the herniation of brain or brain stem tissue out of the back of the neck or head. The condition generally has a poor prognosis.
• Arnold-Chiari malformation type 4: Arnold-Chiari malformation is a rare malformation where the base of the brain enters into the upper spinal canal. Type 4 actually involves a lack of development of a portion of the base of the brain (cerebellum). The prognosis is very poor with death often occurring during infancy.
• Aromatic amino acid decarboxylase deficiency: A rare inborn error of metabolism involving the deficiency of an enzyme (aromatic L-amino acid decarboxylase) needed to process aromatic amino acids. This results in a deficiency of neurotransmitters such as dopamine and serotonin. The condition manifests as movement and neurological problems.
• Arteriovenous Malformation: Birth defect of a tangle of veins and arteries.
• Arthralgia: pain in the joints
• Arthritis: A condition which is characterized by the inflammation of a joint
• Arthritis - short stature - deafness: A very rare syndrome characterized by arthritis, short stature, deafness and numerous other abnormalities.
• Arthrogryposis: A condition which is characterized by the persistent flexure of a joint
• Arthrogryposis - epileptic seizures - migrational brain disorder: A rare disorder characterized by congenital joint contractures, epileptic seizures and brain development abnormalities. It can be caused by fetal exposure to alcohol or chemical products.
• Arthrogryposis - ophthalmoplegia - retinopathy: A very rare syndrome characterized by congenital contractures of the hands and feet as well as eye problems.
• Arthrogryposis - renal dysfunction - cholestasis syndrome: A very rare syndrome characterized by joint contractures, kidney dysfunction and liver problems.
• Arthrogryposis IUGR thoracic dystrophy: A very rare syndrome characterized by congenital joint contractures, intrauterine growth retardation (IUGR) and ribcage abnormalities.
• Arthrogryposis due to muscular dystrophy: A rare disorder where a non-progressive muscle disease results in the presence of multiple joint contractures at birth.
• Arthrogryposis multiplex congenita neurogenic type: A rare non-progressive syndrome characterized by congenital contractures that originates from a nerve problem (spinal motor neuron depletion).
• Arthrogryposis multiplex congenita type 2B: A form of distal arthrogryposis (joint contractures in ends of limbs) that also involves craniofacial abnormalities.
• Arthrogryposis multiplex congenita, distal, X-linked: A rare condition characterized by the presence of contractures at birth as well as various other anomalies. The condition is X-linked.
• Arthrogryposis, congenital - myopathic seizures: A rare syndrome characterized by mental retardation and muscle problems.
• Arthrogryposis, distal, type 2A: A form of distal arthrogryposis (joint contractures in ends of limbs) that involves additional symptoms such as facial and spinal anomalies.
• Arthrogryposis, distal, type 2B: A form of distal arthrogryposis (joint contractures in ends of limbs) that also involves craniofacial abnormalities.
• Arthrogryposis-like disorder: A rare disorder characterized by joint contractures of the knees and ankles resulting in wasting or overgrowth of nearby muscles.
• Arthropathy, progressive pseudorheumatoid, of childhood: A form of progressive rheumatoid arthritis that affects children.
• Aspartylglucosaminidase deficiency: A rare glycoprotein metabolism disorder caused by a deficiency of an enzyme called aspartylglucosaminidase. Patients tend to develop normally during the first few years of life and development continues slowly until adolescence when mental retardation becomes progressively worse.
• Aspartylglucosaminuria: A rare glycoprotein metabolism disorder caused by a deficiency of an enzyme called aspartylglucosaminidase. Patients tend to develop normally during the first few years of life and development continues slowly until adolescence when mental retardation becomes progressively worse.
• Aspartylglycosaminuria: A rare glycoprotein metabolism disorder caused by a deficiency of an enzyme called aspartylglucosaminidase. Patients tend to develop normally during the first few years of life and development continues slowly until adolescence when mental retardation becomes progressively worse.
• Asperger syndrome: A neuropsychiatric disorder mainly involving the inability to understand and becoming involved in social interaction.
• Ataxia: Failure of muscular coordination
• Ataxia - apraxia - mental retardation, X-linked: A rare X-linked syndrome characterized mainly by ataxia, apraxia and mental retardation. The symptoms are generally nonprogressive.
• Ataxia Telangiectasia: A rare inherited childhood disorder involving progressive degeneration of the nervous system.
• Ataxia spastic congenital miosis: A rare, dominantly inherited disorder characterized mainly by ataxia, spasticity and small pupils that respond poorly to light.
• Ataxia, Hereditary, Autosomal Dominant: A group of rare, dominantly inherited neuromuscular disorder involving degeneration of the brain and spinal cord. The range, progression and severity of symptoms can vary quite considerably depending on the genetic defect involved.
• Ataxia, spastic, 3, autosomal recessive: A recessively inherited disorder characterized mainly by spasticity and ataxia.
• Athabaskan brainstem dysgenesis: A rare neurological disorder caused by abnormal brainstem development and function.
• Athabaskan severe combined immunodeficiency: A severe immunodeficiency disorder found in Navajo and Apache populations.
• Atherosclerosis, premature - deafness - diabetes mellitus - photomyoclonus - nephropathy - degenerative neurologic disease: A rare syndrome characterized mainly by deafness, diabetes, epilepsy, kidney disease and premature hardening of the arteries.
• Atherosclerosis- deafness - diabetes - epilepsy - nephropathy: A rare syndrome characterized mainly by deafness, diabetes, epilepsy, kidney disease and premature hardening of the arteries.
• Athetosis: Involuntary, slow contraction particularly in the hands.
• Atkin-Flatiz syndrome: A rare, X-linked syndrome characterized mainly by mental retardation and facial anomalies.
• Atlantic mussel food poisoning: Atlantic mussels contain a toxin called domoic acid which can affect nerve tissue. The mussels are found in the North Atlantic and Pacific coast and the Gulf of Mexico.
• Atlanto-Axial Fusion: A congenital anomaly where the first neck vertebrae is fused to the skull.
• Attention Deficit Hyperactivity Disorder: Behavioral disorder with hyperactivity and/or inattention.
• Atypical hemolytic uremic syndrome: A rare condition characterized by hemolytic anemia, thrombocytopenia and kidney failure that has no obvious cause.
• Atypical pyridoxine-dependent seizures: A form of epilepsy which responds to anticonvulsant therapy for only a period of time but are able to be managed by pyridoxine supplementation after a few months. Seizures may disappear for a few months even after pyridoxine supplementation is ceased.
• Austrian syndrome: A condition where alcoholism is associated with heart failure and pneumococcal meningitis.
• Autism: Childhood mental condition with social and communication difficulties.
• Autoimmune Diseases of the Nervous System: A group of diseases where the body's immune system attacks it's own nervous system. Examples includes opsoclonus myoclonus syndrome, Guillain-Barre syndrome and multiple sclerosis. Symptoms vary depending on which nerves are involved.
• Autoimmune Vasculitis: A inflammation of the blood vessels caused by an autoimmune reaction
• Autoimmune limbic encephalitis: Limbic encephalitis is an inflammation of the limbic system which is the part of the brain responsible for basic autonomic functions. In the paraneoplastic type, the inflammation is caused by autoimmune processes.
• Autoimmune thyroid disease associated Celiac Disease: Patients with autoimmune thyroid disease are more susceptible to developing celiac disease than the average population. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Autoimmune thyroid diseases: Autoimmune diseases of the thyroid gland.
• Autonomic Dysreflexia: A complication of spinal cord injury where a particular stimulus can trigger an excessive response from the autonomic nervous system which causes blood pressure to rise - sometimes to dangerous levels. Stimuli that can trigger the response include bladder irritation, bowel irritation (e.g. due to constipation, gas, enema), skin irritation (e.g. due to burns, pressure sores, ingrown toenails), broken bones, tight clothing, labour and temperature extremes. The severity and frequency of the condition is highly variable. The condition occurs in patients with tetraplegia or with loss of sensation above the lower rib cage.
• Autonomic seizure: A seizure which has resulted from a functional disturbance or pathological change in the autonomic nervous system
• Avascular necrosis: Bone death from lack of circulation.
• Axenfeld-Rieger syndrome: A rare genetic disorder characterized by underdeveloped or absent teeth and craniofacial and eye abnormalities. The range of symptoms that can occur is somewhat variable.
• Azalea poisoning: Bacillus cereus is a bacterium that can cause food poisoning symptoms such as vomiting and diarrhea. There are two types: Type I causes mainly vomiting and is associated with fried rice whereas type II causes mainly diarrhea and is associated with meats, cereals, vegetables and milk.
• Back injuries: A term usually used to describe any musculoskeletal back injury - a common workplace occurrence.
• Back spasm: A sudden involuntary contraction of the muscles of the back.
• Back sprain: Damage to ligaments in the back.
• Back tumour: The presence of tumour growth in the vertebra, whether due to primary malignancies e.g. leukaemic or myeloma infiltration of the bone marrow, or due to secondary metastases from another site e.g. lung or breast.
• Bacterial meningitis: Bacterial meningitis is a form of meningitis caused by bacteria that normally lives in the mouth and throat. When the immune system is unable to supress this bacteria, it travels to the cerebrospinal spinal fluid in the brain. From there it affects the membranes surrounding the brain.
• Bahemuka Brown syndrome: A very rare syndrome characterized by spastic paraplegia and skin pigmentation irregularities.
• Balo's concentric sclerosis: Demyelination of the brain producing a variety of symptoms depending on the area of the brain affected.
• Baló disease: A very rare, rapidly progressive form of multiple sclerosis (inflammatory disease of the brain and spinal cord). The type, severity and rate of progression of symptoms depends on the area of the brain affected.
• Baneberry poisoning: Baneberries are toxic and can cause a skin reaction on contact or various poisoning symptoms.
• Bannayan-Zonana syndrome: A rare genetic disorder characterized by macrocephaly, intestinal polyposis, pigmentation of penis and benign tumor-like growths.
• Baraitser Brett Piesowicz syndrome: A very rare syndrome characterized by a small head and calcification in the brain.
• Baraitser burn fixen syndrome: A rare syndrome characterized mainly by skeletal abnormalities, a skin disorder and an expressionless face.
• Baraitser-Rodeck-Garner syndrome: A very rare syndrome characterized primarily by mental retardation, premature fusion of skull bones, kidney anomalies, seizures and facial anomalies.
• Barbiturate abuse: Abuse of barbiturate medications
• Barotrauma: Damage to the lungs, ear or sinuses caused by rapid or extreme changes in air pressure.
• Bartschi-Rochaix syndrome: A range of symptoms caused by compression of the cerebral artery.
• Basal Ganglia Disease, Adult-Onset: A rare disorder where a genetic mutation results in a neurological disease resulting from abnormal iron and ferritin deposits in the brain.
• Basal ganglia calcification, idiopathic 1: Abnormal calcium deposits in the part of the brain called the basal ganglia. Type 1 results in psychiatric, cognitive or neurological problems associated with the calcification. The symptoms experienced are variable.
• Basilar artery migraine: Basilar migraine (BM), also known as Bickerstaff syndrome, consists of headache accompanied by dizziness, ataxia, tinnitus, decreased hearing, nausea and vomiting, dysarthria, diplopia, loss of balance, bilateral paresthesias or paresis, altered consciousness, syncope, and sometimes loss of consciousness.
• Basilar impression primary: A congenital bone abnormality where the skull and vertebrae meet which can compress some of the brain structures and result in neurological abnormalities. The defect is often associated with other vertebral abnormalities. In severe cases, the cerebrospinal fluid flow may be obstructed which can cause fluid to build up inside the skull (hydrocephalus).
• Battaglia Neri syndrome: A very rare syndrome characterized by mental retardation, small head, epilepsy, coarse facial features and skeletal anomalies. Only two reported cases of this syndrome.
• Batten Disease: Rare childhood genetic degenerative nerve system disease.
• Batten-Turner muscular dystrophy: A benign form of congenital muscular dystrophy involving relatively minor muscle wasting. The condition progresses slowly until adulthood.
• Bd syndrome: A very rare syndrome characterized mainly by the association of mental retardation, small eyes and a movement disorder.
• Becker disease: A rare inherited neuromuscular disorder characterized by muscle stiffness when movement is initiated and difficulty relaxing muscles after movement had occurred. Becker disease is a recessively inherited form of myotonia congenita and usually occurs later in childhood than the dominantly inherited form and muscle stiffness is usually more severe.
• Beckwith-Wiedemann Syndrome: An inherited disorder marked by gigantism, exomphalos and macroglossia. Also called EMG syndrome and exophthalmos-macroglossia-gigantism syndrome.
• Behcet's Disease: Recurring inflammation of small blood vessels affecting various areas.
• Behr syndrome: A rare inherited neurological condition characterized by spastic paraplegia and sometimes optic atrophy.
• Bell mania: A rare life-threatening neuropsychiatric disorder involving delusions, hyperactivity and periods of fever. Death can occur within days or months without treatment.
• Bell's palsy: A one sided muscle paralysis of sudden onset due to a problem with the facial nerve
• Benign astrocytoma: Benign tumors that occur in the brain or spinal cord. Symptoms and severity depends on the location and size of the tumors.
• Benign essential tremor syndrome: A condition characterized mainly by tremor affecting usually then hands and head and the tremors may then slowly progress to other parts of the body.
• Benign familial infantile epilepsy: A harmless form of epilepsy that occurs during infancy. Psychomotor development is not affected.
• Benign familial neonatal-infantile seizures: A rare dominantly inherited form of seizures that occurs during the first year of life. The seizures tend to occur in clusters. The seizures involved limb twitching, averted head, eye-blinking and lip smacking. No neurological or developmental problems are associated with this disorder.
• Benson's syndrome: A rare neurodegenerative disorder characterized mainly by defective visual information processing which affects a person's ability to recognize familiar objects and people.
• Bentham-Driessen-Hanveld syndrome: A rare syndrome characterized mainly by the association of undescended testes, long thin fingers and mental retardation.
• Benzodiazepine abuse: Abuse of benzodiazepine tranquiliser medications
• Berk-Tabatznik syndrome: A rare condition characterized by eye and skeletal problems.
• Berry aneurysm, cirrhosis, pulmonary emphysema, and cerebral calcification: A very rare syndrome characterized primarily by brain aneurysms, liver cirrhosis, pulmonary emphysema and calcification of the brain (cerebrum).
• Beta ketothiolase deficiency: A rare inherited disease characterized by the bodies inability to metabolise certain amino acids and products of the breakdown of fat. Harmful levels of organic acids build up in the body and cause ketoacidic attacks.
• Beta-hydroxybutyric aciduria: A rare disorder of amino acid metabolism where glycine and proline are unable to be metabolized properly due to deficiency of the enzyme called succinic semialdehyde dehydrogenase.
• Bethlem myopathy: A rare, slow-progressing, genetic muscle disorder where the muscle gradually weaken and become wasted.
• Bianchi's syndrome: Damage to a part of the brain (left parietal lobe) resulting in the loss of ability to read (alexia), comprehend language (sensory aphasia) and inability to carry out previously learned purposeful movements (apraxia). The damage may be caused by such things as stroke, trauma and cancer. The type and severity of symptoms are determined by the exact location and extent of damage to the brain.
• Bicep muscle strain: Damage to the bicep muscle in the arm due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Binswanger's Disease: A type of senile dementia characterized by chronic cerebrovascular disease.
• Biotinidase deficiency: A metabolic disorder where the body lacks the enzyme biotinidase needed to process the vitamin called biotin (vitamin H) into carboxylase enzymes.
• Biotinidase deficiency, late onset: A metabolic disorder where the body lacks the enzyme biotinidase needed to process the vitamin called biotin (vitamin H) into carboxylase enzymes. The severity of symptoms may vary depending on the degree of deficiency. Severe cases can result in metabolic acidosis which can lead to death if treatment isn't given.
• Bipolar disorder: Cycles of mania and depression; commonly called "manic-depression".
• Bird cherry seed poisoning: Wild cherry seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the seed remains intact and therefore poisoning usually occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual.
• Bitter almond seed poisoning: Bitter almond seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. Accidental ingestion is very unusual. Bitter almond plants grow mainly in Northern America. Various processes can be used to leach the toxic chemical out of the bitter almonds.
• Black jetbead poisoning: The Black jetbead is a deciduous shrub which bears single white flowers and small groups of shiny black fruit. The fruit contains amygdalin which is very toxic and can cause severe poisoning or even death if eaten.
• Black widow spider envenomation: The black widow spider bite is toxic to the nerves and can cause serious symptoms. The black widow spider is most commonly found in North America.
• Blue-ringed octopus poisoning: The blue-ringed octopus is found in shallow Australian ocean water and can deliver venomous, potentially fatal bite. The poison is present in the saliva of the octopus. The venom affects the neuromuscular system.
• Bobble-head doll syndrome: A rare condition where a child's head bobs up and down continuously due to either fluid on the brain or a large cyst in the third ventricle of the brain.
• Bog rosemary poisoning: Bog rosemary is a type of heath found in bogs and cold peat areas of the more northern parts of the world. It is a small shrub with tall thin stems. The flowers are whit or pink. The plant contains a chemical called grayanotoxin which can cause various symptoms if eaten. The plant is only considered poisonous if large amounts are eaten.
• Bone marrow failure - neurologic abnormalities: A rare syndrome characterized by the association of bone marrow failure and neurological abnormalities.
• Bone symptoms: Symptoms affecting the body's bones
• Bonefish poisoning (clupeotoxin): Some bonefish contain toxins (Clupeotoxin) which can be poisonous to humans if eaten. Heat does not destroy the toxin and there is still uncertainty as to the origin of the toxin. The toxin appears to be present in higher concentrations in summer and is believed to be possible linked to the consumption of toxic food in its food web. The size and age of the bonefish does not appear to be related to the toxicity. The bonefish are found in coastal waters off Africa and the Caribbean, Indian and Pacific Oceans.
• Bonneman-Meinecke-Reich syndrome: A very rare syndrome characterized by calcium deposits in the brain tissue, deficiency of growth hormones and degeneration of the part of the eye called the retina.
• Bonnemann-Meinecke-Reich syndrome: A rare disorder characterized mainly by growth problems, vision problems and brain disease.
• Borjeson Syndrome: A rare genetic disorder characterized by severe mental deficiency, large ears, hypogonadism and other abnormalities.
• Borreliosis: An infectious bacterial disorder that is transmitted by ticks and causes skin rashes joint swelling and other symptoms similar to the flu.
• Borud Syndrome: A very rare syndrome characterized by numerous features including hearing and vision problems, heart muscle disease, ataxia and peripheral neuropathy.
• Bottlebrush buckeye poisoning: The Bottlebrush buckeye is a deciduous shrub which bears clusters of white or pink flowers and smooth, leathery fruit containing shiny seeds. The plant originated in southern USA. The plant contains various toxic chemicals (glycoside esculin, saponin aescin) which can cause potentially fatal toxicity if sufficient quantities of the seeds or leaves are consumed.
• Botulism food poisoning: Extremely dangerous food poisoning requiring medical attention, but not always recognized because of its non-abdominal symptoms.
• Boudhina-Yedes-Khiari syndrome: A very rare syndrome characterized primarily by short stature, small head, mental deficiency, seizures, hearing loss and skin lesions.
• Bovine spongiform encephalopathy: This is a medical condition caused by the transmission of an infective prion causing an encephalopathy
• Box Jellyfish poisoning: A sting from the Box jellyfish contains a chemical which is toxic to the nerves, heart and skin. This jellyfish is mainly found in the waters of Northern Queensland in Australia. The tentacles should not be removed from the patient as it can cause further injection of poison.
• Brachydactyly - tibial hypoplasia: A rare syndrome characterized by short digits and an underdeveloped or absent shin bone.
• Bradykinesia: A condition which is characterized by abnormal slowness of movement
• Brain - bone - fat: A rare inherited disease characterized by bone cysts and progressive presenile dementia.
• Brain Fag syndrome: A type of neurotic disorder that was first observed in white collar workers in Africa.
• Brain abscess: abscess in the brain may involve any of the lobes of the brain
• Brain symptoms: Symptoms affecting the brain
• Brain tumor, adult: A growth or tumor that develops in the tissues of the brain in adults. The tumor can be benign or malignant.
• Branchio-skeleto-genital syndrome: A rare inherited disorder characterized by mental retardation, jaw anomalies, cleft palate, sunken chest and other abnormalities.
• Breast spasm: A sudden involuntary contraction of the muscles of the breast.
• Broken Collarbone: Fractured collarbone (clavicle)
• Broken elbow: Fracture at the elbow joint
• Bronchopulmonary dysplasia: A condition which is characterized by dysplasia of the brochopulmonary vessels
• Brown snake poisoning: The Brown snake is a poisonous Australian snake. They are considered one of the most venomous snakes in the world and their bite can result in death without prompt medical attention. The snake venom contains toxins which affect the blood and nerve systems. Children tend to suffer more severe symptoms due to their smaller body size.
• Brown-Sequard Syndrome: A disorder where spinal cord compression and lesions involve only half of the spinal cord.
• Brugada Syndrome: A rare genetic disorder characterized by heart rhythm abnormalities which can result in sudden death if untreated. The condition may be inherited in some cases. The mean age of sudden death is 40 years of age.
• Bruyn-Scheltens syndrome: A rare syndrome characterized by limb weakness and muscle wasting in the hands and feet.
• Buckeye poisoning: Buckeye is a shrub or small tree which contains a toxic compound called aesculin that can cause gastrointestinal or neuromuscular symptoms. Young leaves, flowers and bark are the most toxic parts of the plant. The plant is most common in parts of North America. Eating only one or two seeds may simply cause vomiting or diarrhea but repeated exposure or eating large amounts can cause more serious symptoms.
• Bufotenine poisoning: The skin glands of certain toads (Cane toad and Colorado river toad) contain a poison called bufotoxin.
• Bulimia nervosa: Eating disorder with binging (overeating) and purging (vomiting).
• Bursitis: inflammation of one or more bursae (small sacs) of synovial fluid in the body.
• Bush lily poisoning: The Bush lily is a perennial herb which bears long strappy leaves, small funnel-shaped flowers and red berries. The plant originated in South Africa and is often grown in gardens or utilized as a houseplant. The plant contains alkaloids which can cause toxicity symptoms if eaten in large quantities.
• Busulfan toxicity syndrome: Symptoms caused by the use of a chemotherapy drug called Busulfan.
• Buttock spasm: A sudden involuntary contraction of the muscles of the buttocks.
• CACH syndrome: A rare syndrome characterized mainly by childhood ataxia and reduced myelination of the cerebral nerves. Motor and mental development in the first few years of life is normal with progressive neurodegeneration occurring between 2 and 5 years of age. Fever and trauma to the head can speed up disease progression.
• CAMFAK syndrome: A rare syndrome characterized by cataracts, small head, failure to thrive and spinal curvature.
• CDG syndrome type I: A rare genetic disorder where the body is unable to synthesize glycoproteins which results in multisystem problems.
• Calcification of basal ganglia with or without hypocalcemia: Calcification of a part of the brain called the basal ganglia. That calcification may be associated with conditions such as hypothyroidism, cytomegalovirus, and AIDS or may occur for no apparent reason. The severity of the condition may vary greatly from asymptomatic to neurological, psychiatric and movement disorders. The disorder may also progress at variable rates or remain stable depending on the underlying disease process.
• Calf muscle strain: Damage to the calf muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Calf spasm: A sudden involuntary contraction of the muscles of the calf or calves.
• California buckeye poisoning: The California buckeye is a deciduous shrub which bears clusters of white or pink flowers and smooth, leathery fruit containing shiny seeds. The plant originated in California. The plant contains various toxic chemicals (glycoside esculin, saponin aescin) which can cause potentially fatal toxicity if sufficient quantities of the seeds or leaves are consumed.
• California encephalitis: An uncommon mosquito born virus (California encephalitis virus) which can cause brain inflammation in humans. The severity of symptoms is variable. The incubation period can last from a few days to a week. Infants and children tend to be more severely affected than adults who sometimes have no obvious symptoms.
• Camptodactyly: A flexion deformity of the finger where the finger is bent and unable to straighten.
• Campylobacter food poisoning: Common bacterial infection usually from chicken.
• Canavan disease: Rare genetic degenerative brain disease in infants.
• Canavan leukodystrophy: A rare inherited disorder where a chemical imbalance in the brain leads to spongy degeneration of the central nervous system which results in progressive mental deterioration and associated symptoms.
• Carbamate insecticide poisoning: Excessive ingestion of carbamate insecticide drugs.
• Carbamoyl-phosphate synthase 1 deficiency: A very rare inherited urea cycle disorder where the lack of the enzyme carbamoyl phosphate synthetase prevents ammonia from being turned into urea and being excreted in the urine. Excess ammonia builds up in the body which can cause serious complications or even death if left untreated.
• Carbohydrate deficiency glycoprotein syndrome type II: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 2 is caused by a genetic defect which involves the gene for a particular enzyme (Golgi localized N-acetyl-glucosaminyltransferase II). Type 2 tends to have more severe psychomotor retardation than type 1 but there is no peripheral neuropathy or underdeveloped cerebellum.
• Carnitine palmitoyl transferase 1 deficiency: A very rare inherited deficiency of a particular enzyme (Carnitine palmitoyl transferase I) prevents fatty acids being transported to the part of the cell that converts it to energy.
• Carnitine palmitoyl transferase 2 deficiency: A very rare inherited deficiency of a particular enzyme (Carnitine palmitoyl transferase) which prevents fatty acids being transported to the part of the cell that converts it to energy. There are two main subtypes of the disorder with each involving a slightly different form of the enzyme. Type I can be readily managed through diet. Type II has three subtypes: the myopathic form affects mainly the muscles; the hepatocardiomuscular form affects the liver and heart muscle; and the lethal neonatal form affects muscles and organs and usually results in death during the first year of life.
• Carnitine palmitoyl transferase II deficiency, infantile hepatocardiomuscular type: A very rare metabolic disorder where deficiency of a particular enzyme (CPT II) prevents muscle fats being converted to energy. The infantile form of this disease affects the muscles and the liver and heart.
• Carnitine palmitoyl transferase II deficiency, lethal neonatal form: A very rare metabolic disorder where deficiency of a particular enzyme (CPT II) prevents muscle fats being converted to energy. The lethal neonatal form affects various organs as well as the muscles and death usually occurs during the first year of life.
• Carnitine palmitoyl transferase II deficiency, myopathic: A very rare metabolic disorder where deficiency of a particular enzyme (CPT II) prevents muscle fats being converted to energy. Prolonged exercise can cause an episode of muscle symptoms. The myopathic form of the condition is the least severe and tends to affect only the muscles.
• Carnitine palmitoyl transferase deficiency: A very rare inherited deficiency of a particular enzyme (Carnitine palmitoyl transferase) which prevents fatty acids being transported to the part of the cell that converts it to energy. There are two main subtypes of the disorder with each involving a slightly different form of the enzyme. Type I can be readily managed through diet. Type II has three subtypes: the myopathic form affects mainly the muscles; the hepatocardiomuscular form affects the liver and heart muscle; and the lethal neonatal form affects muscles and organs and usually results in death during the first year of life.
• Carnitine-acylcarnitine translocase deficiency: A very rare inherited metabolic disorder where long-chain fatty acids can't be metabolized properly because the compound needed to transport it is faulty. Ultimately this prevents certain fats (long-chain acylcarnitine) being converted to energy and results in a build up of the fat which is harmful to body organs and tissues.
• Carnosinase deficiency: A very rare inherited metabolic disorder characterized by severe neurological abnormalities such as mental retardation and myoclonic seizures.
• Carolina Cherry Laurel poisoning: The Carolina cherry laurel is an evergreen tree which bears small white flowers and small green fruit which turns black when ripe. Most parts of the plant contain cyanogenic glycoside and amygdalin which can cause symptoms if ingested. The plant is considered highly toxic and eating sufficient quantities can lead to death.
• Carpal Tunnel Syndrome: Hand or wrist problems; often from repetitive motion.
• Carpopedal spasm: spasm of the hands or feet
• Catalepsy: Complete trance-like mental detachment
• Catamenial seizure: A type of seizure that is associated with the female menstrual cycle. It appears that flucutations in hormone levels leads to increased seizure activity in some women just before or during their menstrual cycle. Simple or complex partial seizures or generalized tonic-clonic seizures may be involved.
• Catastrophic Antiphospholipid Syndrome: A very rare disorder where the blood clotting system becomes dysfunctional and clots too easily due to the abnormal presence of antphospholipid antibodies. It results in blood flow blockages to various body organs. It is possible that the condition has autoimmune origins. The disorder is often triggered by infections, certain drugs (e.g. anticoagulants), minor surgery and hysterectomy.
• Catatonia: Motor muscle function disorder
• Caterpillar complication poisoning: The spines on certain caterpillars can cause a skin reaction as well as systemic symptoms if ingested. The nature of the symptoms vary depending on the species of caterpillar involved. Some only produce skin reactions whereas others can produce systemic symptoms.
• Celiac Disease: Digestive intolerance to gluten in the diet.
• Celiac disease - epilepsy - occipital calcifications: A rare syndrome characterized by celiac disease and epilepsy with brain calcifications.
• Celiac disease, susceptibility to 1: The susceptibility to developing celiac disease due to a genetic defect on chromosome 6p21.3. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 10: The susceptibility to developing celiac disease due to a genetic defect on chromosome 3q25-q26. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 11: The susceptibility to developing celiac disease due to a genetic defect on chromosome 3q28. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 12: The susceptibility to developing celiac disease due to a genetic defect on chromosome 6q25.3. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 13: The susceptibility to developing celiac disease due to a genetic defect in the SH2B3 gene on chromosome 12q24. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 2: The susceptibility to developing celiac disease due to a genetic defect on chromosome 5q31-q33. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 3: The susceptibility to developing celiac disease due to a genetic defect on chromosome 2q33. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 4: The susceptibility to developing celiac disease due to a genetic defect on chromosome 19p13.1. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 5: The susceptibility to developing celiac disease due to a genetic defect on chromosome 15q11-q13. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 6: The susceptibility to developing celiac disease due to a genetic defect on chromosome 4q27. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 7: The susceptibility to developing celiac disease due to a genetic defect on chromosome 1q31. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 8: The susceptibility to developing celiac disease due to a genetic defect on chromosome 2q11-q12. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Celiac disease, susceptibility to 9: The susceptibility to developing celiac disease due to a genetic defect on chromosome 3p21. Celiac disease is a small intestine disorder where the ingestion of foods containing wheat gluten and similar proteins leads to the inflammation of the small intestine lining. This damage affects absorption of nutrients and can cause symptoms such as diarrhea. Growth in children due to malabsorption may also result. The type and severity of symptoms is variable.
• Central nervous system oxygen toxicity: High oxygen levels which affects the central nervous system. The condition can occur during deep dives with fatal consequences.
• Central nervous system protozoal infections: A protozoal infection of the central nervous system (spinal cord or brain). The infection may originate in the central nervous system (primary infection) or may spread from another part of the body (secondary infection). The infection may occur in otherwise healthy individuals or in individuals who have a compromised immune system. Primary protozoal CNS infections include cerebral amebiasis, granulomatous amebic encephalitis and secondary infections include cerebral malaria and cerebral babesiosis.
• Central pontine myelinolysis: A rare condition where the protective layer around brainstem nerve cells is destroyed which prevents nerve signals being transmitted properly. It generally occurs in response to a rapid change in sodium levels in the body which can be caused by treatment of various conditions or by various conditions that cause rapid sodium level changes.
• Cerebellar ataxia syndrome: A disorder where degeneration of certain parts of the brain results in symptoms such as ataxia.
• Cerebellar atrophy with progressive microcephaly: A very rare disorder characterized mainly by a small brain, small head, underdeveloped brain, brain degeneration, contractures, eye problems and seizures.
• Cerebellar hypoplasia: A rare brain disorder where a part of the brain (cerebellum) fails to develop fully. The cerebellum is the part of the brain that controls balance and movement.
• Cerebelloparenchymal disorder V: An inherited brain disorder characterized by myoclonic jerks which become more apparent during voluntary movements.
• Cerebral Palsy: Any brain disorder causing movement disability
• Cerebral astrocytoma, adult: A very rare tumor that occurs in adults and develops in brain cells called astrocytes. The part of the brain involved is the cerebrum at the top of the head which controls functions such as reading, writing, thinking, learning, speech, emotion and voluntary movement.
• Cerebral calcification cerebellar hypoplasia: A rare fatal condition observed in two sibling and characterized by abnormal calcification in parts of the brain, developmental regression, seizures, blindness and spastic tetraplegia.
• Cerebral cavernous malformations: A rare disorder where a group of small abnormal blood vessels in the brain. These blood vessels become enlarged, irregularly shaped and thin walled. They swell when filled with blood and are then often unable to return to their original shape and the thin walls means that they can leak blood and cause bleeding in the brain. Severity of symptoms depends on the number and location of the lesions.
• Cerebral hemorrhage: Bleeding in the brain
• Cerebral palsy, spastic, diplegic: Brain damage that involves muscle rigidity that occurs either in both arms or in both legs. The brain damage is often the result of a birth defect or some sort of trauma to the brain.
• Cerebral sarcoma: A type of brain tumor that can be inherited in an autosomal dominant manner. The tumor arises from blood vessels in the brain. Symptoms may vary depending on the size and exact location of the tumor.
• Cerebral ventricle neoplasm: A tumor that occurs in the fluid-filled spaces of the brain called the ventricles. Symptoms vary depending on the size and exact location of the tumor and whether it is cancerous or not.
• Cerebro oculo skeleto renal syndrome: A very rare syndrome characterized mainly by brain, eye, skeletal and kidney abnormalities.
• Cerebrorenodigital syndrome: A rare group of syndromes characterized mainly by brain, kidney, finger and toe abnormalities.
• Cerebrotendinous Xanthomatosus: A rare syndrome where a genetic mutation results in a metabolic disorders caused by a deficiency of sterol 27-hydroxylase deficiency. The condition causes progressive neurological dysfunction, cataracts and premature atherosclerosis. Deposits of cholesterol and cholestanol can be found in any part of the body including the brain. The rate of progression and severity of symptoms varying amongst patients. The degree of neurological involvement is also variable.
• Cerebrovascular accident: Occurs when the blood supply to the brain is interrupted and results in cell injury and death.
• Ceroid lipofuscinosis, neuronal: A rare metabolic disorder that affects the nerve cells of the body and is characterized by the deposits of lipopigments (lipofuscin). The 10 different type of the disorder are distinguished by the origin of the genetic defect.
• Ceroid lipofuscinosis, neuronal 1, infantile: A rare inherited biochemical disorder involving the progressive accumulation of certain chemicals (lipopigments) in body tissues due to deficiency of an enzyme (palmitoyl-protein thioesterase) needed to process it.
• Ceroid lipofuscinosis, neuronal 2, late infantile type: A rare inherited biochemical disorder involving the progressive accumulation of certain chemicals (lipopigments) in body tissues due to deficiency of an enzyme (protease tri-peptidyl-peptidase) needed to process it.
• Ceroid lipofuscinosis, neuronal 3, Juvenile: A progressive genetic disorder where defective lipid metabolism that causes blindness, neurological deterioration, dementia leading to total incapication within years and death within 10-15 years.
• Ceroid lipofuscinosis, neuronal 4: A rare inherited biochemical disorder involving the progressive accumulation of certain chemicals (lipopigments) in body tissues due to deficiency of an enzyme (palmitoyl-protein thioesterase 1) needed to process it.
• Ceroid lipofuscinosis, neuronal 5: A rare metabolic disorder that affects the nerve cells of the body and is characterized by the deposits of lipopigments (lipofuscin). Type 5 is distinguished from other types by the origin of the genetic defect.
• Ceroid lipofuscinosis, neuronal 6, late infantile: A rare metabolic disorder that affects the nerve cells of the body and is characterized by the deposits of lipopigments (lipofuscin). Type 6 usually occurs between the ages of 2 to 6 years. Type 6 is distinguished from other types by the origin of the genetic defect.
• Ceroid lipofuscinosis, neuronal 7: A rare metabolic disorder that affects the nerve cells of the body and is characterized by the deposits of lipopigments (lipofuscin). Type 7 is distinguished from other types by the origin of the genetic defect.
• Ceroid lipofuscinosis, neuronal 8: A rare metabolic disorder that affects the nerve cells of the body and is characterized by the deposits of lipopigments (lipofuscin). Type 8 is distinguished from other types by the origin of the genetic defect.
• Ceroid lipofuscinosis, neuronal 9: A rare metabolic disorder that affects the nerve cells of the body and is characterized by the deposits of lipopigments (lipofuscin). Type 9 is distinguished from other types by the origin of the genetic defect.
• Cervicooculoacoustic syndrome: A rare genetic disorder characterized by ocular palsy, congenital perceptive deafness and fusion of the vertebrae in the neck.
• Charcot-Marie-Tooth disease with pyramidal features, autosomal dominant: CMT is an inherited neurological disease characterized by the gradual degeneration of nerves which starts in the hands and feet and results in progressive numbness, muscle weakness and loss of function. Type 5 has an autosomal dominant inheritance, progresses slowly and involves movement disorders.
• Chediak-Higashi like syndrome: A rare genetic disorder characterized mainly by albinism (lack of pigmentation). There are three different subtypes of the disorder (I, II and III) each with varying additional features such as immunodeficiency and neurological symptoms. Type 1 involves partial albinism and neurological symptoms, type II involves partial albinism, immunodeficiency and sometimes neurological symptoms and type III involves albinism only.
• Chemical burn: A chemical burn is a burn caused by a chemical. Symptoms vary depending on the chemical, the part of the body affected and the duration of the exposure to the chemical. Rapid first aid following exposure can limit the damage caused by the chemical. Chemical burns can occur when certain chemicals are accidentally swallowed, spilt on the skin, splashed in the eyes or even breathed in the case of chemical gases.
• Chemical burn - airways: Burns to the airways caused by a chemical - usually through inhalation but can also occur through aspiration if the chemical is swallowed. Symptoms vary depending on the type, quantity and strength of the chemical involved as well as the duration of the exposure to the chemical and promptness of treatment measures. Immediate medical attention should be sought if chemical burns to the airways are suspected.
• Chemical burn - ingestion: Burns to the mouth and gastrointestinal system caused by swallowing a chemical. Symptoms vary depending on the type, quantity and strength of the chemical involved as well as the duration of the exposure to the chemical and promptness of treatment measures. Immediate medical attention should be sought if chemical burns to the gastrointestinal system are suspected.
• Chemical burn - inhalation: Burns to the airways caused by a chemical through inhalation. Symptoms vary depending on the type, quantity and strength of the chemical involved as well as the duration of the exposure to the chemical and promptness of treatment measures. Immediate medical attention should be sought if chemical burns to the airways are suspected.
• Chemical burn - skin: Burns to the skin caused by a chemical. Symptoms vary depending on the type, quantity and strength of the chemical involved as well as the duration of the exposure to the chemical and promptness of treatment measures.
• Chemical meningitis: Symptomatic aseptic, chemical meningitis is a rare complication of myelography. A number of these cases have a history of one or more episodes of chemical meningitis preceding their arachnoiditis.
• Chemical poisoning - 1,1-Dichloroethene: 1,1-Dichloroethene is a chemical used in packaging, food wraps, carpet backing, adhesives and steel pipe coating. The main effects of an overdose of this chemical central nervous depression and central nervous system depression. However, some people can suffer an adverse reaction to the chemical. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - 1,1-Dimethylhydrazine: 1,1-Dimethylhydrazine is a chemical used mainly in jet fuel and rocket fuel, plant growth agent, photography and various other industrial uses. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - 1-Propanol: 1-Propanol is a chemical used in various antiseptics, polishes, cleaners, cosmetics and lacquer. The main effects of an overdose of this chemical is depression of the central nervous system. However, some people can suffer an adverse reaction to the chemical.
• Chemical poisoning - 2,4-Dichlorophenol: 2,4-Dichlorophenol is a chemical used in the production of antiseptics, bactericides, disinfectants and fungicides. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - 2-Methyl-4-Chlorophenoxyacetic Acid: 2-Methyl-4-Chlorophenoxyacetic Acid is a chemical mainly used as a herbicide for field crops and turf. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - 3-Aminopyridine: 2-Aminopyridine is a chemical used mainly as an intermediate in the production of dyes, pharmaceuticals and various agricultural chemicals. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - 4-Aminopyridine: 4-Aminopyridine is a pesticide used mainly to control bird pests. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acetone: Acetone is a chemical used as a solvent in products such as glues, rubber cement and fingernail polish remover. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acetonitrile: Acetonitrile is a chemical used as a solvent mainly in nail removing agents. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acetylene Dichloride: Acetylene Dichloride is a chemical used mainly in the production of perfumes, dyes and thermoplastics. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acetylsalicylic Acid: Acetylsalicylic Acid is also known as aspirin and is primarily used to relieve pain, fever and inflammation. Excessive exposure to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acidic dry cell batteries: Acidic dry cell batteries contain toxic chemicals and eating the batteries can cause various symptoms if the chemical is released from the battery. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acrylamide: Acrylamide is a chemical used mainly in the treatment of waste water, grout agent, paper strengthening agent and adhesive agents. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Acrylonitrile: Acrylonitrile is a chemical used mainly in the production of acrylic and modacrylic fibers but also in the production of certain plastics, nylon dyes, drugs and pesticides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Adiponitrile: Adiponitrile is a chemical used mainly in the production of hexamethylene diamine which in turn is used mainly to produce nylon. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Agrocide: Agrocide is a chemical insecticide used mainly to control scabies or lice as well as other agricultural insect pests. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Agronexit: Agronexit is a chemical insecticide used mainly as an agricultural insecticide. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Alanycarb: Alanycarb is a carbamate pesticide used mainly as an insecticide and nematicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Aldicarb: Aldicarb is a carbamate pesticide used mainly as an insecticide, nematicide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Aldoxycarb: Aldoxycarb is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Allethrin: Allethrin is a chemical used as an insecticide, mainly in households. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Allyxycarb: Allyxycarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Aluminum: Aluminum is a chemical used mainly for metallurgical purposes and can be found in packaging, electrical parts, vehicles, cooking utensils, construction materials and building components. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Amidithion: Amidithion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Aminocarb: Aminocarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Amiton: Amiton is a chemical once used as an insecticide and acaricide - it is no longer in use due to its nerve toxicity. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Amitraz: Amitraz is a chemical used mainly as a topical parasitic preventative in livestock and fruit trees. It is also used as an insect repellant and a prevention of mite infestation. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Amitrole: Amitrole is a herbicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ammonium Bifluoride: Ammonium Bifluoride is a chemical used wheel cleaners, herbicides and in the manufacture of magnesium. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ammonium Nitrate: Ammonium Nitrate is a chemical used mainly in explosives, fireworks and fertilizers. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ammonium Sulfamate: Ammonium Sulfamate is a chemical used mainly in herbicides, fertilizers and. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Aniline: Aniline is a chemical used mainly in the manufacture of perfumes, varnishes, resins, dyes, paint removers, herbicides, fungicides, explosives, solvents and photographic chemicals. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Aparasin: Aparasin Aparasin. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Aphtiria: Aphtiria is a chemical insecticide used mainly to control scabies or lice. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Arsine: Arsine is a chemical used in the making of semiconductors and in the metal refining industry. It is considered a possible chemical agent in chemical warfare. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Athyl-Gusathion: Athyl-Gusathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinfos-methyl: Azinfos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinfosethyl: Azinfosethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinophos-methyl: Azinophos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinphos: Azinphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinphos-ethyl: Azinphos-ethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinphos-methyl: Azinphos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azinphosmetile: Azinphosmetile is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Azothoate: Azothoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Baking soda: Baking soda is generally considered non toxic and is used in cooking. However, excessive doses can cause various symptoms.
• Chemical poisoning - Ben-Hex: Ben-Hex is a chemical insecticide used mainly to control scabies. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bendiocarb: Bendiocarb is a carbamate pesticide used mainly in . Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Benfuracarb: Benfuracarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Benhexol: Benhexol is a chemical insecticide used mainly to control scabies or lice. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Benoxafos: Benoxafos is a chemical pesticide used as an acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Benzene: Benzene is a chemical used mainly in gasoline fuel and as an industrial solvent. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Benzene hexachloride: Benzene hexachloride is a chemical insecticide. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bexol: Bexol is a chemical insecticide used mainly to control scabies or lice. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Biphenyl: Biphenyl is a chemical used mainly as a fungicide for fruit packaging and in textile dyes. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Borates: Borate is a chemical used in a wide variety of products - herbicides, paints, insecticides, rodenticides and various personal products such as skin creams, toothpastes and powders. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Boric Acid: Boric Acid is a chemical used mainly in foods (preservative, emulsifier, neutralizer), antiseptics, pesticides and contact lens cleaners. Ingestion and other exposures to the chemical can cause various symptoms. Application of boric acid directly to damaged skin can cause the chemical to be absorbed rapidly into the body and lead to death. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bromates: Bromate is a chemical used mainly in perming solution neutralizers and in small amounts as a bread preservative. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bromethalin: Bromethalin is a chemical used mainly in rodenticides. The chemical is toxic to the human nerve system. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bromide: Bromide is a chemical used for many applications - flame retardant, industrial uses, pesticides, sanitary products, fumigants, medicines, dyes, photographic solutions and water purification. Bromides act as central nervous system depressants and the ingestion of excessive quantities can cause serious symptoms. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bromoform: Bromoform is a chemical with limited industrial uses but is used as a laboratory chemical and can be present in treated water. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Bromophos: Bromophos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Bromophos-ethyl: Bromophos-ethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Bufencarb: Bufencarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Butacarb: Butacarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Butocarboxim: Butocarboxim is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Butoxcarboxim: Butoxcarboxim is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Cadmium: Cadmium is a chemical used mainly in batteries, solder, amalgams, cigarettes, PVC pigments and phosphate fertilizer production. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Cadusafos: Cadusafos is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Camphor: Camphor is a chemical used mainly in moth repellents, pharmaceuticals (preservative) cosmetics, explosives, varnishes and various therapeutic applications. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Carbanolate: Carbanolate is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Carbaryl: Carbaryl is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Carbinoxamine: Carbinoxamine is a therapeutic treatment for allergic rhinitis. It is marketed under names such as Histex, Pediatiex and Carboxine. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Carbofuran: Carbofuran is a carbamate pesticide used mainly as an insecticide, nematicide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Carbon Disulfide: Carbon Disulfide is a chemical used mainly in corrosion inhibitors, cold and nickel plating, photography applications and as a solvent in gums and resins. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Carbon Tetrachloride: Carbon tetrachloride is a chemical used mainly in grain fumigants, insecticides and in the production of fluorocarbons. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Carbophenothion: Carbophenothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Carbosulfan: Carbosulfan is a carbamate pesticide used mainly as an insecticide and nematicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Chloralose: Chloralose is a chemical used mainly in poisons for rodents and crows . Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chlorate salts: Chlorate salt is a chemical used mainly in herbicides and in the manufacture of matches and explosives. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chlordane: Chlordane is a poison use to control termites - is banned in the US and many other countries due to its harmful effects. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chlordecone: Chlordecone is an insecticide used to control pests in crops such as bananas and tobacco. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chloresene: Chloresene is a chemical insecticide used mainly to control scabies or lice. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chlorfenvinphos: Chlorfenvinphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Chlorobenzene: Chlorobenzene is a chemical used mainly as a solvent and in the production of various other chemicals. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chloromethane: Chloromethane is a chemical used mainly in the production of silicones as well as agricultural chemicals, butyl rubber and other products. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chloropyrifos: Chloropyrifos is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Chlorpyrifos: Chlorpyrifos is a chemical used mainly in as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be absorbed readily through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Chlorpyrifos methyl: Chlorpyrifos methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Cloethocarb: Cloethocarb is a carbamate pesticide used mainly as an insecticide and nematicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Coumaphos: Coumaphos is used as a pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be absorbed readily through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Creosote: Creosote is a chemical used mainly as a disinfectant, laxative and cough treatment. Ingestion and other exposures to the chemical can cause various symptoms. The chemical can be readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Cresols: Cresols are a group of chemicals that occur naturally in mammals and various plants. It is also manufactured and used in the production of disinfectants, deodorizers and pesticides. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Cresylic acid: Cresylic acids are a group of chemicals that are used as solvents and in the manufacture of various products such as deodorants, disinfectants, pesticides, glues, paints, herbicides, pharmaceuticals as well as others. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Cyanthoate: Cyanthoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - DDD: DDD is a chemical used mainly as a pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - DDT: DDT is a chemical used mainly as a pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Decarbofuran: Decarbofuran is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Demeton: Demeton-S is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Demeton-O: Demeton-O is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Demeton-O-methyl: Demeton-O-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Demeton-S-methyl: Demeton-S-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Demeton-S-methylsulphon: Demeton-S-methylsulphon is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Demeton-methyl: Demeton-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dialifos: Dialifos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Diazinon: Diazinon is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Diborane: Diborane is a chemical used mainly as a rocket propellant and in the manufacture of rubbers and electronics manufacture. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Dichlorvos: Dichlorvos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dicresyl: Dicresyl is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dicrotophos: Dicrotophos is a toxic insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Diethyl Phthalate: Diethyl Phthalate is a chemical used mainly in cosmetic and as a plasticizer in the production of various plastic products. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Dimetan: Dimetan is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dimethoate: Dimethoate is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dimethyl Phthalate: Dimethyl Phthalate is a chemical used mainly as an insect repellant . Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Dimethylnitrosamine: Dimethylnitrosamine is a chemical used mainly as a solving in the manufacture of plastics, rubbers, lubricants and rocket fuel. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Dimetilan: Dimetilan is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dinitrocresol: Dinitrocresol is a chemical used mainly as a herbicide and fungicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Dinitrophenol: Dinitrophenol is a chemical that has various applications: herbicide, pesticide, fungicide, acaricide, manufacture of dyes and wood preservative. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Dioxacarb: Dioxacarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Dioxathion: Dioxathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Diquat Dibromide: Diquat Dibromide is a chemical used mainly in herbicides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Disulfiram: Disulfiram is a drug used mainly to manage alcoholism. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Disulfoton: Disulfoton is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - EMPC: EMPC is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Endosulfan: Endosulfan is a chemical used mainly as a crop pesticide and wood preservative. Ingestion and other exposures to the chemical can cause various symptoms. The chemical may be readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Endothion: Endothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Epichlorohydrin: Epichlorohydrin is a chemical used for a variety of applications - epoxy production, insecticides, solvent and agricultural chemical. Ingestion and other exposures to the chemical can cause various symptoms. The chemical is readily absorbed through the skin. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ethiofencarb: Ethiofencarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Ethion: Ethion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Ethoate-methyl: Ethoate-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Ethoprophos: Ethoprophos is a chemical pesticide used as an insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Ethyl Mercaptan: Ethyl Mercaptan is a chemical used mainly in the production of fungicides, insecticides and plastics as well as an odorizing agent for natural gas. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ethyl-guthion: Azinphos-ethyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Ethylbenzene: Ethylbenzene is a chemical used mainly in paint thinners, fuels, asphalt, degreasers, manufacture of various as products and as a solvent. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ethylene Dichloride: Ethylene Dichloride is a chemical used mainly in fat solvents and as a fumigant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Ethylene Glycol: Ethylene Glycol is a chemical used mainly in antifreeze, coolants and as a solvent. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. Symptoms tend to occur in three phases: the first 12 hours involves inebriation, seizuresand brain swelling; the second and third day involves deterioration of lung and heart function and the third stage involves kidney damage and possibly failure. Death can occur during any of the stages.
• Chemical poisoning - Ethylene Oxide: Ethylene oxide is a chemical used mainly in detergents, plasticizers, fumigants, inks, cosmetics and brake fluid. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Etrimfos: Etrimfos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fenchlorphos: Fenchlorphos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fenethacarb: Fenethacarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fenitrothion: Fenitrothion is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fenobucarb: Fenobucarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fensulfothion: Fensulfothion is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fenthion: Fenthion is a chemical pesticide used as an insecticide and avicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Fipronil: Fipronil is a chemical used mainly in pesticides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Fluoridated toothpaste: Fluoridated toothpaste contains fluoride and various other chemicals which can cause serious symptoms if sufficient quantities are swallowed. As little as half a tube of children's paste can cause death in a 2 year old child and a whole tube can cause death in a 9 year old child. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Fonophos: Fonophos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Formothion: Formothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Furathiocarb: Furathiocarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Gasoline: Gasoline is a chemical used as a fuel for combustion engines. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Glaze: Glazes are used to put a shiny finish on various surfaces such as pottery. Glazes contain chemicals such as lead and zinc oxide which can cause serious symptoms if sufficient quantities are eaten. The chemicals cause damage to the gastrointestinal lining and the damage may continue for weeks after the poison was ingested. Death can result in severe cases. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Glufosinate: Glufosinate is a chemical used mainly in herbicides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Glycol Ether: Glycol Ether is a chemical used mainly in nail polish removers, products to treat leather, anti-icing agents and as an industrial solvent. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Guthion (ethyl): Guthion (ethyl) is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - HCH-gamma: HCH-gamma is an insecticide which is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Helium: Helium is a chemical used mainly in helium balloons, neon signs and diving gas. The gas is sometimes misused as an inhalant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Heptachlor: Heptachlor is a chemical used mainly in pesticides to control termites and fire ants. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Heptenophos: Heptenophos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Hexachlorocyclohexane (gamma): Hexachlorocyclohexane (gamma) is an insecticide which is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - High Melting Explosive (HMX): High Melting Explosive (HMX) is a chemical used mainly in plastic explosives and rocket fuel propellant. The chemical may be absorbed through the skin. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Hydrogen Sulfide: Hydrogen Sulfide is a chemical that can be used in production processes (paper, tanneries, sulfide ores) or it may be a byproduct of certain industries. It is also found naturally in sewers and manure. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Hyquincarb: Hyquincarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Incense: Drinking liquid incense or inhaling incense fumes can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Iodofenphos: Iodofenphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Isoprocarb: Isoprocarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Lindane: Lindane is a chemical used mainly as an agricultural insecticide but also as a treatment of lice and scabies infestations. The insecticide is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Lysergic Acid Diethylamide: Lysergic Acid Diethylamide is a hallucinogenic drug which is often misused. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Malathion: Malathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Manganese: Manganese is a chemical used mainly in fertilizers, welding rods, matches, electrical coils, ceramics and animal food additives. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Mecarbam: Mecarbam is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Metaldehyde: Metaldehyde is a chemical used mainly as a molluscicide, in heating fuel and in fire lighters. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Methacrifos: Methacrifos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Methamidophos: Methamidophos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Methidathion: Methidathion is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Methiocarb: Methiocarb is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Methomyl: Methomyl is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Methylene Chloride: Methylene Chloride is a chemical used mainly in paint removers, nail polish remover, fumigants and fire extinguishers. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Metiltriazotion: Metiltriazotion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Metolcarb: Metolcarb is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Mevinphos: Mevinphos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Mexacarbate: Mexacarbate is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Monocrotophos: Monocrotophos is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Monosodium Methanarsenate: Monosodium Methanarsenate is a chemical used mainly as a herbicide or pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Mouth Wash: Mouth wash contains various chemicals which can cause serious symptoms if sufficient quantities are swallowed. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Nitrilacarb: Nitrilacarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Nitrites: Nitrite is a chemical used in many applications: manufacture of dyes, fabric manufacture, corrosive inhibitors, photography and cyanide antidote kits. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Omethoate: Omethoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Oxamyl: Oxamyl is a carbamate pesticide used mainly as an insecticide, acaricie and nematicide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Oxydeprofos: Oxydeprofos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Oxydisulfoton: Oxydisulfoton is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Paramethoxyamphetamine: Paramethoxyamphetamine is used as a recreational hallucinogenic drug. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Parathion: Parathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Parathion Methyl: Parathion Methyl is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Pentachlorophenol: Pentachlorophenol is a chemical used mainly in fungicides, herbicides, insecticides, molluscicides, algicides and bactericides. It is commonly used as a wood preservative. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Phencyclidine: Phencyclidine is often used as an illegal recreational drug. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Phenkapton: Phenkapton is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Phenol: Phenol is a chemical used mainly in the production of fertilizer, explosives, rubber, paint, paint remover, perfumes, asbestos products, wood preservatives, resins, textiles, pharmaceuticals and drugs. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Phorate: Phorate is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Phosalone: Phosalone is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Phosdrin: Phosdrin is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Phosmet: Phosmet is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Phosphamidon: Phosphamidon is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Phosphine: Phosphine is a chemical used mainly in pesticides and rodenticides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Phoxim: Phoxim is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Pirimicarb: Pirimicarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Pirimiphos-methyl: Pirimiphos-methyl is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Primiphos methyl: Primiphos methyl is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Profenofos: Profenofos is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Promacyl: Promacyl is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Promecarb: Promecarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Propane: Propane is a chemical used mainly in fuels and as a solvent. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Propoxur: Propoxur is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Propylene Glycol: Propylene Glycol is a chemical used mainly in cosmetics and in antifreeze and as a pharmaceutical solvent. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Prothidathion: Prothidathion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Prothoate: Prothoate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Pyrethrin: Pyrethrin is used mainly as an indoor insecticide. Pyrethrin is considered to have a relatively low level of toxicity with large amounts usually required to produce toxicity symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Pyrimitate: Pyrimitate is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Quinalphos: Quinalphos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Quintiofos: Quintiofos is a chemical pesticide used as an acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - RDX: RDX is a chemical used mainly in explosives, fireworks, detonators and rodenticides. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Rotenone: Rotenone is a naturally occurring chemical found in certain plants (Derris and Lonchocarpus sp.). It gives the plant insecticidal and pesticidal properties and is hence utilized commercially as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. Inhalation tends to cause more severe symptoms than ingestion. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Selenious Acid: Selenious Acid is a chemical used mainly in gun bluing agents. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Sodium Monofluoroacetate: Sodium Monofluoroacetate is a chemical used mainly as a rodenticides, often to control mammal pests in crops. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Sophamide: Sophamide is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Strychnine: Strychnine is used as a rodenticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Sulfotep: Sulfotep is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Sulfuryl Fluoride: Sulfuryl Fluoride is a chemical used mainly as a fumigant insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Tazimcarb: Tazimcarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Terbufos: Terbufos is a chemical pesticide used as an insecticide and nematicide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Tetrachloroethane: Tetrachloroethane is a chemical used mainly as a dry cleaning solvent but is also used as a degreaser and in paint strippers and spot removers. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Tetraethyl Pyrophosphate: Tetraethyl Pyrophosphate is a toxic pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Tetramethylammonium Hydroxide: Tetramethylammonium Hydroxide is a chemical used mainly in the production of a variety of electronic components. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Tetramethylenedisulfotetramine: Tetramethylenedisulfotetramine is a chemical used mainly as a rodenticide in China. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Thallium: Thallium is an element used for such things as electronic devices, selenium rectifiers, gamma radiation detection apparatus, transmission equipment and infrared radiation detection. It is also used as a catalyst in various manufacturing processes. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Thallium Sulfate: Thallium Sulfate is a chemical used mainly in the manufacture of switches and closures in the semiconductor industry. It has historically also been used as a rodenticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Thiocarboxime: Thiocarboxime is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Thiodicarb: Thiodicarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Thiofanox: Thiofanox is a carbamate pesticide used mainly as an insecticide and acaricide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Thiometon: Thiometon is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Thiram: Thiram is a chemical used mainly in the rubber industry, latex manufacture and as a pesticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Tolclofos methyl: Tolclofos methyl is a chemical insecticide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Toluene: Toluene is a chemical used mainly in pesticides, degreasers, glues and pain removers. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Toxaphene: Toxaphene is a chemical used mainly as a livestock insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Triazophos: Triazophos is a chemical pesticide used as an insecticide, nematicide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Triazotion: Triazotion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Trichlorfon: Trichlorfon is an insecticide used mostly in crops. It is considered motderately toxic to humans. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Trichloroethylene: Trichloroethylene is a chemical used mainly as an industrial solvent and in adhesives, lacquer, fire retardants and house cleaning solvents. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Trifenfos: Trifenfos is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Trimethacarb: Trimethacarb is a carbamate pesticide used mainly as an insecticide, bird repellent, molluscicide and mamal repellent. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Tungsten: Tungsten is an element used mainly in light bulb filaments, X-ray tubes, electrodes, superalloys, heating elements and various other high temperature uses. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Turpentine Oil: Turpentine Oil is a chemical used mainly as a solvent, paint thinner and various other applications such as deodorizing fragrances and antiseptics. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - Vamidothion: Vamidothion is a chemical pesticide used as an insecticide and acaricide. The chemical is an organophosphorus compound and ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Vinyl Choride: Vinyl Choride is an intermediate chemical used in the manufacturing process of a variety of products: polyvinyl chloride, pipes, wire coverings, vehicle plastics, rubber, paper, furniture and glass. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - White Phosphorus: White Phosphorus is a chemical used mainly in fertilizers, water treatment, rodenticides and insecticides (for cockroaches). Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - XMC: XMC is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - Xylylcarb: Xylylcarb is a carbamate pesticide used mainly as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure. The chemical may be absorbed through the skin.
• Chemical poisoning - d-Phenothrin: d-Phenothrin is an insecticide used mainly in households and public health applications. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Chemical poisoning - gamma-HccH: Gamma-HccH is an insecticide which is considered moderately toxic to humans and acts as a central nervous system stimulant. Ingestion and other exposures to the chemical can cause various symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Cherry laurel seed poisoning: Wild cherry seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the seed remains intact and therefore poisoning usually occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual. Wild cherry plants grow mainly in eastern Europe, Western Asia and Britain.
• Cherry seed poisoning: Cherry seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the seed remains intact and therefore poisoning usually only occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual.
• Chest spasm: A sudden involuntary contraction of the muscles of the chest.
• Chiari Malformation: Protrusion of the brain down the spinal column.
• Childhood disintegrative disorder: A rare disorder where a period of normal development (a couple of years) is followed by delays in the development of motor, social and language skills. Previously acquired skills are lost.
• Childhood hypophosphatasia: An inherited bone disorder due to an inborn error of metabolism characterized by a deficiency of alkaline phosphate which results in loss of deciduous teeth before the age of 5 as well as muscle and bone problems - childhood onset.
• Childhood-onset cerebral X-linked adrenoleukodystrophy: A rare genetic disorder characterized by progressive degeneration of the protective sheath around nerves resulting in increasing difficulty. The childhood cerebral form of the condition is the most severe.
• Chin spasm: A sudden involuntary contraction of a muscle or of muscles in the chin.
• China Tree poisoning: The China tree is a deciduous tree which bears clusters of numerous pinkish-purple flowers. It also produces a yellow-green fruit. The fruit and leaves contain a chemical called tetranortriterpene neurotoxin which can cause poisoning symptoms if consumed in large quanitites.
• Chokecherry seed poisoning: Chokecherry seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the seed remains intact and therefore poisoning usually occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual. Chokecherry plants grow mainly in Northern America.
• Choking: Sensation of blockage or inability to breathe.
• Chondritis: Inflammation of the cartilage of the joint
• Chondrocalcinosis: A rare inherited metabolic disorder where the chemical calcium pyrophosphate dihyrdate is deposited in one or more joints in the body - usually the knee is affected.
• Chondrocalcinosis 1: A very rare genetic disorder characterized by progressive osteoarthritis which starts relatively early and is progressive. Joint damage is caused by deposits of crystals containing calcium.
• Chondrocalcinosis 2: A very rare genetic disorder characterized by progressive osteoarthritis. Joint damage is caused by deposits of crystals containing calcium.
• Chondrocalcinosis due to apatite crystal deposition: A rare inherited disorder involving calcium pyrophosphate deposits in cartilage, joint fluid and tissues around joints.
• Chondrocalcinosis familial articular: A very rare genetic disorder characterized by osteoarthritis which starts relatively early and is progressive. Joint damage is caused by deposits of crystals containing calcium.
• Chondrodysplasia Punctata, Rhizomelic type: A rare genetic disorder characterized by slow growth, mental deficiency, characteristic facial features and skeletal deformities particularly of the limbs, spine and pelvis.
• Chorea: The occurrence of rapid, jerky, dyskinetic movements that are involuntary
• Chorea familial benign: A rare movement disorder which is stable and involves abnormal involuntary movements (chorea) and continuous writhing movements.
• Chorea, remitting with nystagmus and cataracts: A rare inherited disorder characterized by chorea and involuntary horizontal eye movements that start in infancy and improve or disappear by the age of 10. Cataracts were also present.
• Choreoacanthocytosis amyotrophic: A rare inherited disease involving neurological degeneration and abnormal red blood cell shape. The disorder progresses slowly and causes involuntary movements, loss of cognitive ability, behavioral changes and seizures.
• Choroid Plexus neoplasms: A rare type of brain tumor that originates in the choroids plexus. The choroids plexus is located inside a space in the brain called the ventricles and produces cerebrospinal fluid. Symptoms are determined by the size, type and exact location of the tumor.
• Choroido cerebral calcification syndrome infantile form: A rare syndrome characterized by abnormal calcification in part of the brain and mental retardation.
• Christmas Rose poisoning: The Christmas Rose plant contains proteoanemonin which can cause blisters and saponins which can cause irritation. The plant is found mainly in Europe. All parts of the plant are poisonous.
• Chromosome 1, 1p36 deletion syndrome: A rare chromosomal disorder where deletion of a portion of chromosome 1 causes various abnormalities such as heart problems, mental retardation, developmental delay, facial dysmorphism and short stature. The symptoms are variable depending on the exact location of chromosomal deletion.
• Chromosome 1, Terminal deletion: A genetic disorder where a portion of the genetic material from the long arm of chromosome 1 is missing. The symptoms or severity may vary somewhat between patients.
• Chromosome 1, monosomy 1q25 q32: A rare chromosomal disorder where deletion of a portion of chromosome 1 causes various abnormalities such as digital defects, facial dysmorphism, retarded growth, mental retardation and spasticity.
• Chromosome 1, monosomy 1q4: A rare chromosomal disorder where deletion of a portion of chromosome 1 causes various abnormalities such as facial dysmorphism, retarded fetal growth, seizures, mental retardation, testicular problems and kidney defects.
• Chromosome 1, pter-p36: A very rare chromosomal disorder where the end portion of the short arm of chromosome 1 is missing. The type and severity of symptoms is variable.
• Chromosome 1, uniparental disomy 1q12 q21: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 1 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 10p deletion syndrome: A rare chromosomal disorder where there is a deletion of the short arm (p) of chromosome 10 resulting in variable abnormalities.
• Chromosome 10p duplication/10q deletion syndrome: A rare chromosomal disorder where a section of the short arm (p) of chromosome 10 is duplicated and a section of the long arm (q) of chromosome 10 is deleted resulting in various abnormalities.
• Chromosome 11, deletion 11p: A syndrome that is caused by the deletion of short arm (p) of chromosome 11. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Chromosome 11q duplication syndrome: A rare chromosomal disorder where there are three copies of the long arm (q) of chromosome 11 rather than the normal two resulting in various abnormalities. The type and severity of symptoms depend on the amount and location of genetic material duplicated.
• Chromosome 11q partial deletion: A rare chromosomal disorder where a portion of chromosome 11 is missing and is characterized by trigonencephaly, heart defects and a large, carp-shaped mouth.
• Chromosome 12, 12p trisomy: A rare chromosomal disorder where there are three copies of the short arm (p) of chromosome 12 rather than the normal two resulting in various abnormalities. The type and severity of symptoms depend on the amount and location of genetic material deleted.
• Chromosome 12, Isochromosome 12p Mosaic: A very rare disorder genetic disorder involving abnormalities in chromosome 12. The severity of symptoms is variable and tends to include a wide range of defects and abnormalities.
• Chromosome 12, trisomy 12q: A rare chromosomal disorder where there are three copies of the long arm (q) of chromosome 12 rather than the normal two resulting in various abnormalities. In most cases, death occurs during infancy. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is duplicated.
• Chromosome 12p deletion: A rare chromosomal disorder where there is a deletion of the short arm (p) of chromosome 12 resulting in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Chromosome 12p deletion syndrome: A rare chromosomal disorder where there is a deletion of the short arm (p) of chromosome 12 resulting in various abnormalities.
• Chromosome 12p duplication syndrome: A rare chromosomal disorder where there are three copies of the short arm (p) of chromosome 12 rather than the normal two resulting in various abnormalities. The type and severity of symptoms depend on the amount and location of genetic material deleted.
• Chromosome 12p tetrasomy syndrome: A rare chromosomal disorder where there are four copies of the short arm (p) of chromosome 12 rather than the normal two resulting in various abnormalities.
• Chromosome 12q duplication syndrome: A rare chromosomal disorder where there are three copies of the long arm (q) of chromosome 12 rather than the normal two resulting in various abnormalities. In most cases, death occurs during infancy.
• Chromosome 13 ring syndrome: A rare chromosomal disorder where genetic material from one or both ends of chromosome 13 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 13 trisomy syndrome: A rare chromosomal disorder where there are three copies of chromosome 13 rather than the normal two resulting in various abnormalities. Most die within months and there are few survivors after 10 years.
• Chromosome 13q duplication syndrome: A rare chromosomal disorder where the long arm (q) of chromosome 13 is duplicated resulting in various physical, neurological and developmental abnormalities.
• Chromosome 14 Ring: A rare chromosomal disorder where genetic material from one or both ends of chromosome 14 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing. The disorder is characterized by growth and mental retardation and characteristic facial features.
• Chromosome 14 trisomy: A rare chromosomal disorder involving duplication of genetic material from chromosome 14 resulting in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is duplicated.
• Chromosome 14 trisomy syndrome: A rare chromosomal disorder involving duplication of genetic material from chromosome 14 resulting in various abnormalities.
• Chromosome 14 uniparental disomy syndrome: A rare chromosomal disorder where two homologues are obtained from one parent.
• Chromosome 14q deletion syndrome: A rare chromosomal disorder involving deletion of genetic material from the long arm (q) of chromosome 14 resulting in various abnormalities.
• Chromosome 14q, partial deletion: A rare chromosomal disorder involving deletion of genetic material from the long arm (q) of chromosome 14 resulting in various abnormalities.
• Chromosome 15 Ring: A rare chromosomal disorder where genetic material from one or both ends of chromosome 15 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 15 inverted duplication: A rare chromosomal disorder involving an duplicated section of chromosome 15 which is reversed end-to-end resulting in various abnormalities.
• Chromosome 15 trisomy: A rare chromosomal disorder involving an extra copy of genetic material from chromosome 15.
• Chromosome 15q duplication syndrome: A rare chromosomal disorder involving an extra copy of genetic material from the long arm of chromosome 15. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
• Chromosome 15q triplication syndrome: A rare chromosomal disorder where there are three copies of a part of the long arm of chromosome 15 resulting in various anomalies.
• Chromosome 15q, partial duplication (distal q arm): A rare chromosomal disorder involving an extra copy of genetic material from the distal part of the long arm of chromosome 15. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
• Chromosome 15q, partial duplication (unbalanced translocation): A rare chromosomal disorder involving an extra copy of genetic material from the long arm of chromosome 15. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
• Chromosome 15q, trisomy: A rare chromosomal disorder involving an extra copy of genetic material from the long arm of chromosome 15. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
• Chromosome 15q13.3 microdeletion syndrome: A genetic disorder characterized by the deletion of a small portion of genetic material at the chromosomal location of 15q13.3. A rare syndrome characterized mainly by seizures, mental retardation, and slightly unusual facial features.
• Chromosome 16q, partial deletion: A rare chromosomal disorder involving deletion of genetic material from the long arm of chromosome 17. The type and severity of symptoms are determined by the amount and location of the lost genetic material.
• Chromosome 17 ring: A rare chromosomal disorder where genetic material from one or both ends of chromosome 17 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 17 trisomy mosaicism: A rare chromosomal disorder where there are three copies of chromosome 17 in some of the body's cells. The type of symptoms and severity is determined by the number of cells that have the three copies. Some cases have no obvious symptoms.
• Chromosome 17, deletion 17q23 q24: A rare chromosomal disorder involving deletion of genetic material from the long arm of chromosome 17. The type and severity of symptoms are determined by the amount and location of the lost genetic material.
• Chromosome 17p, partial deletion: A rare chromosomal disorder involving deletion of genetic material from the short arm of chromosome 17. The type and severity of symptoms are determined by the amount and location of the lost genetic material.
• Chromosome 17p, partial duplication: A rare chromosomal disorder involving an extra copy of genetic material from the short arm of chromosome 17. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
• Chromosome 17q, partial duplication: A rare chromosomal disorder involving an extra copy of genetic material from the long arm of chromosome 17. The type and severity of symptoms are determined by the amount and location of the duplicated genetic material.
• Chromosome 18 Ring: A rare chromosomal disorder where genetic material from one or both ends of chromosome 18 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 18 deletion syndrome: A rare chromosomal disorder where a portion of chromosome 18 is missing.
• Chromosome 18, Tetrasomy 18p: A rare chromosomal disorder where there are four copies of short arm of chromosome 18 instead of the normal two which results in various genital, kidney, digital, head and face abnormalities.
• Chromosome 18q, partial deletion: A rare chromosomal disorder involving deletion of genetic material from the long arm of chromosome 18. The type and severity of symptoms are determined by the amount and location of the lost genetic material.
• Chromosome 19 ring syndrome: A rare chromosomal disorder where genetic material from one or both ends of chromosome 19 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 19p duplication syndrome: A rare chromosomal disorder where the short arm of chromosome 19 is duplicated resulting in various abnormalities.
• Chromosome 1p deletion syndrome: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 1 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 1p duplication syndrome: A rare chromosomal disorder where a portion of the short arm (p) of chromosome 1 is duplicated so there is three copies of it rather than the normal two.
• Chromosome 1q deletion: A rare chromosomal disorder where part of the long arm (q) of chromosome 1 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 2 trisomy syndrome: A rare chromosomal disorder where there are three copies of chromosome 2 instead of the normal two.
• Chromosome 2, monosomy 2pter p24: A very rare chromosomal disorder where a portion of chromosome 2 is deleted resulting in a range of birth defects and abnormalities.
• Chromosome 2, monosomy 2q: A rare chromosomal disorder where part of the long arm (q) of chromosome 2 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 2, monosomy 2q24: A genetic disorder characterized by the deletion of a portion of the long arm of chromosome 2.
• Chromosome 2, monosomy 2q37: A very rare chromosomal disorder where a part of the long arm of chromosome 2 is missing which results in various birth defects and abnormalities. The features of the disorder are determined by the exact size and location of the deletion.
• Chromosome 2, trisomy 2q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 2 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 20 ring: A rare chromosomal disorder where genetic material from one or both ends of chromosome 20 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 20, deletion 20p: A rare chromosomal disorder where the short arm (p) of chromosome 20 is deleted resulting in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Chromosome 20p deletion syndrome: A rare chromosomal disorder where the short arm (p) of chromosome 20 is deleted resulting in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Chromosome 20p, partial duplication: A rare chromosomal disorder where a copy of the short arm of chromosome 20 has been triplicated instead of duplicated resulting in various anomalies.
• Chromosome 21 monosomy: A rare chromosomal disorder where there is only one copy of chromosome 21 instead of the normal two leading to various abnormalities.
• Chromosome 21q deletion syndrome: A rare genetic disorder where a portion of the genetic material from the long arm of chromosome 21 is missing. The symptoms or severity may vary somewhat between patients.
• Chromosome 22 Ring: A rare chromosomal disorder where genetic material from one or both ends of chromosome 22 is missing and the two broken ends have rejoined to form a ring. The resulting type and severity of symptoms is determined by the amount and location of genetic material missing.
• Chromosome 22 monosomy syndrome: A rare chromosomal disorder where there is only one copy of chromosome 22 in the body cells instead of two which results in various physical and mental abnormalities.
• Chromosome 22, trisomy: A very rare disorder where there is an extra copy of chromosome 22 in all the body cells. The condition is usually fatal soon after birth or during the fetal stage.
• Chromosome 22q deletion: A rare genetic disorder where a portion of the genetic material from the long arm of chromosome 22 is missing. The symptoms or severity may vary somewhat between patients.
• Chromosome 22q deletion syndrome: A rare chromosomal disorder where the long arm of chromosome 22 is deleted resulting in various abnormalities.
• Chromosome 22q11.2 deletion syndrome: A rare genetic disorder caused by the absence of a small portion of genetic material. A small section of chromosome 22 is missing at a location called q11.2. Chromosome 22 is one of 23 pairs of chromosomes that exist in humans.
• Chromosome 22q13 deletion: A very rare chromosomal disorder where a portion of chromosome 22 is missing at the q13 location which results in various abnormalities.
• Chromosome 22q13.3 deletion syndrome: A very rare chromosomal disorder where a portion of chromosome 22 is missing at the q13.3 location which results in various abnormalities.
• Chromosome 2p deletion syndrome: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 2 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 2q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 2 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 3, monosomy 3p: A rare chromosomal disorder where a portion of chromosome 3 is absent and is characterized by mental and growth deficiency, drooping upper eyelid and polydactyly.
• Chromosome 3, monosomy 3p25: A rare chromosomal disorder characterized by mental retardation, short stature, deafness, extra digits, facial anomalies and various other abnormalities.
• Chromosome 3, monosomy 3q13: A rare chromosomal disorder characterized by a range of abnormalities including facial anomalies, kidney dysfunction, large head, small penis and impaired joint mobility.
• Chromosome 3, trisomy 3p: A rare chromosomal disorder where a portion of the short arm (p) of chromosome 3 is duplicated so there is three copies of it rather than the normal two.
• Chromosome 3, trisomy 3q: A rare chromosomal disorder where a portion of the long arm (q) of chromosome 3 is duplicated so there is three copies of it rather than the normal two. The condition is characterized by mental and growth deficiency, broad nose root and excessive hair growth.
• Chromosome 4 ring syndrome: A rare chromosomal disorder where the ends of chromosome 4 have been deleted and the two broken ends have rejoined to form a ring shape resulting in a range of symptoms determined by the size and location of the genetic deletion.
• Chromosome 4 short arm deletion: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 4 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 4, Monosomy 4q: A rare chromosomal disorder where a portion of the long arm (q) of chromosome 4 is missing resulting in various abnormalities.
• Chromosome 4, trisomy 4p: A rare chromosomal disorder where a portion of chromosome four is duplicated so there is three copies of it instead of the normal two.
• Chromosome 4, trisomy 4q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 4 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 4p deletion syndrome: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 4 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 4q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 4 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 5, Trisomy 5p: A rare chromosomal disorder where there are three copies of all or part of the short arm (p) of chromosome 5 rather than the normal two. The type and severity of symptoms is determined by the location and size of the genetic material duplicated.
• Chromosome 5, trisomy 5pter p13 3: A rare chromosomal disorder characterized by cortico-adrenal hypoplasia, mental retardation, seizures and a blood abnormality.
• Chromosome 5, trisomy 5q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 5 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 5p duplication syndrome: A rare chromosomal disorder where there are three copies of all or part of the short arm (p) of chromosome 5 rather than the normal two. The type and severity of symptoms is determined by the location and size of the genetic material duplicated.
• Chromosome 5p tetrasomy syndrome: A rare chromosomal disorder where there are four copies of the short arm (p) of chromosome 5 rather than the normal two copies.
• Chromosome 5q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 5 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 6, monosomy 6q: A rare chromosomal disorder where a part of the long arm (q) of chromosome 6 is deleted resulting in various abnormalities depending on the location and length of missing genetic material.
• Chromosome 6, trisomy 6q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 6 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 6p deletion syndrome: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 6 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Chromosome 6q deletion syndrome: A rare chromosomal disorder where a part of the long arm (q) of chromosome 6 is deleted resulting in various abnormalities depending on the location and length of missing genetic material.
• Chromosome 6q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 6 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 7, Monosomy 7p2: A rare chromosomal disorder where there is one copy of the end of the short arm (p) of chromosome 7 rather than the normal two. The type and severity of symptoms is determined by the location and size of the genetic material deleted.
• Chromosome 7, monosomy 7q3: A very rare chromosomal disorder involving a deletion of material from chromosome 7 at a location known as q3 which results in a wide range of abnormalities.
• Chromosome 7, terminal 7p deletion: A rare chromosomal disorder where there is one copy of the end of the short arm (p) of chromosome 7 rather than the normal two. The type and severity of symptoms is determined by the location and size of the genetic material deleted.
• Chromosome 7, trisomy 7q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 7 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 7q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 7 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Chromosome 8 recombinant syndrome: A rare recombinant chromosomal disorder involving chromosome 8 which results in various abnormalities.
• Chromosome 8, mosaic trisomy: A very rare chromosomal disorder where there is an extra copy of chromosome 8 in some of the body's cells. Some cases with this chromosomal abnormality have no clinical symptoms. The presence of abnormalities in some cases is dependent on which body cells contain the chromosomal defect.
• Chromosome 8, trisomy 8q: A rare chromosomal disorder where the long arm (q) of chromosome 8 is duplicated resulting in variable abnormalities depending on the location and length of genetic material deleted.
• Chromosome 8p inverted duplication syndrome: A rare chromosomal disorder involving the inverted duplication of the short arm (p) of chromosome 8 resulting in three copies of the genetic material instead of the normal two. The type and severity of symptoms is determined by the location and size of the duplication.
• Chromosome 8p mosaic tetrasomy: A rare chromosomal disorder where a part of the short arm of chromosome 8 is repeated four times in some of the body's cells instead of the normal two resulting in various abnormalities.
• Chromosome 8q deletion syndrome: A rare chromosomal disorder where a part of the long arm (q) of chromosome 8 is deleted resulting in various abnormalities depending on the location and length of missing genetic material.
• Chromosome 8q duplication syndrome: A rare chromosomal disorder where the long arm (q) of chromosome 8 is duplicated resulting in variable abnormalities depending on the location and length of genetic material deleted.
• Chromosome 9, monosomy 9p: A rare chromosomal disorder where a portion of the short arm (p) of chromosome 9 is missing resulting in various abnormalities.
• Chromosome 9, trisomy 9p: A rare chromosomal disorder where a portion of the short arm (p) of chromosome 9 is duplicated so there is three copies of it instead of the normal two.
• Chromosome 9, trisomy 9q: A very rare genetic disorder where a portion of the genetic material on the long arm (q) of chromosome 9 is duplicated which results in various abnormalities. The type and severity of symptoms varies depending on the size and location of the genetic material involved.
• Chromosome 9p deletion syndrome: A rare genetic disorder where a portion of the genetic material from the short arm of chromosome 9 is missing. The symptoms or severity may vary somewhat between patients.
• Chromosome 9p tetrasomy syndrome: A rare chromosomal disorder where there is four copies of the short arm of chromosome 9 instead of the normal two resulting in various abnormalities.
• Chromosome 9q duplication: A very rare genetic disorder where a portion of the genetic material on the long arm (q) of chromosome 9 is duplicated which results in various abnormalities. The type and severity of symptoms varies depending on the size and location of the genetic material involved.
• Chromosome 9q duplication syndrome: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 9 resulting in various abnormalities.
• Chromosome 9q duplication/chromosome 9p deletion syndrome: A rare chromosomal disorder where part of the long arm (q) of chromosome 9 is duplicated and part of the short arm (p) is deleted resulting in various abnormalities. These chromosomal abnormality occurs in only some of the body's cells (mosaicism).
• Chromosome diploid-triploid mosaicism syndrome: A rare chromosomal disorder involving chromosomal duplication, triplication and mosaicism.
• Chronic Bokhoror: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The chronic form tends not to have acute symptoms but present with symptoms similar to a milder, less progressive form of the later stages of the slowly progressive form.
• Chronic Pesticide poisoning - xylene: Xylene is an ingredient used in certain insecticides. Exposure to the chemical can cause a range of symptoms depending on the level and route of exposure. Exposure can occur through inhalation, ingestion, the skin or eyes. Acute exposure involves a exposure over a short period of time whereas chronic exposure occurs over a longer period of time.
• Chronic Viliuisk Encephaliti: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The chronic form tends not to have acute symptoms but present with symptoms similar to a milder, less progressive form of the later stages of the slowly progressive form.
• Chronic Viliuisk Encephalomyelitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The chronic form tends not to have acute symptoms but present with symptoms similar to a milder, less progressive form of the later stages of the slowly progressive form.
• Chronic Vilyisk Encephalomyelitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The chronic form tends not to have acute symptoms but present with symptoms similar to a milder, less progressive form of the later stages of the slowly progressive form.
• Chronic Vilyuisk Encephalitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The chronic form tends not to have acute symptoms but present with symptoms similar to a milder, less progressive form of the later stages of the slowly progressive form.
• Chronic inflammatory demyelinating polyneuropathy: A rare disorder involving swelling of nerve roots and destruction of the protective layer around nerves. Severe symptoms can take up to a year or more to develop.
• Chylomicron retention disease with Marinesco-Sjogren syndrome: A rare condition characterized by abnormal lipid metabolism, vitamin E deficiency, incoordination and short stature.
• Chédiak-Higashi syndrome: An inherited immune system disorder characterized by reduced pigmentation, recurrent infection and neurological disorders.
• Citrullinemia: Citrullinemia is an inherited urea cycle disorder which causes toxic substances including ammonia to build up in the blood. There are two main subtypes of Citrullinemia (I and II) which are caused by different genetic abnormalities and result in different symptoms. Milder forms may present in childhood and rare late-onset forms (adult-onset) may not cause symptoms until adulthood.
• Citrullinemia I: A very rare urea cycle disorder where a lack of the enzyme argininosuccinate synthetase prevents ammonia being turned into urea which can then be excreted in the urine. The build up of ammonia in the body can cause harmful effects. The neonatal form of citrullinemia type I is generally more serious than the later onset form which may sometimes be mild enough to produce no symptoms.
• Citrullinemia II: A very rare urea cycle disorder involving a deficiency of the transport compound called Citrin. Citrin transports aspartate to where the enzyme argininosuccinic acid synthase can combine it with citrulline to make argininosuccinic acid. The deficiency prevents ammonia being turned into urea which can then be excreted in the urine. The build up of ammonia in the body can cause harmful effects.
• Classic childhood ALD: Classic severe form of ALD in boys.
• Classical pyridoxine-dependent seizures: A form of epilepsy which responds to pyridoxine hydrochloride administration and not to standard anticonvulsant medication.
• Claviceps purpurea poisoning: Claviceps purpurea is a type of fungus that can contaminate grains such as rye, wheat, oats and barely. Ingestion of contaminated foods can cause poisoning with the severity of symptoms varying depending on the amount consumed.
• Clonus: An involuntary muscular contraction and relaxation in rapid succession.
• Clupeotoxism: A potentially fatal condition caused by eating fish such as herrings and anchovies from the Clupeidae family of fish. Severe poisoning can result in death within half an hour of ingestion. Outbreaks have been reported in the Caribbean Sea and the Indian-Pacific area.
• Coastal leucothoe poisoning: The coastal leucothoe is an evergreen shrub which bears small clusters of bell-shaped, white flowers in the apex of the leaves. It also bears small capsulated fruit. The leaves and flower nectar contain a chemical called andromedotoxin which is very toxic and can cause death if sufficient quantities are eaten.
• Cobra poisoning: The Cobra is a poisonous snake which can be found in Africa, Asia and other parts of the world. Some cobras are able to spit venom into the victims eye and cause serious symptoms.
• Cocaine abuse: Stimulant drug with various effects
• Cocaine addiction: An uncontrollable desire to use cocaine on a regular basis. Chronic cocaine use can lead to dependency in as little as two weeks. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
• Cocaine overdose: Cocaine is an illegal and highly addictive recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Cockayne syndrome: A rare genetic disorder characterized by a senile-like appearance, hearing and vision impairment and sun sensitive skin.
• Codeine overdose: Codeine is a prescription drug mainly used to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Coenzyme Q 10 (CoQ10), deficiency: A rare inherited disorder characterized by the deficiency of Coenzyme Q 10. The range and severity of symptoms is variable.
• Coenzyme Q cytochrome c reductase deficiency of: A rare genetic defect where an enzyme deficiency (CoQ-Cytochrome C reductase) disrupts cellular processes. Any of a variety of the components of the enzyme may be missing or defective and hence the clinical presentation and severity may vary. The deficiency may result in a variety of symptoms and conditions of variable severity such as cardiomyopathy, fatal infant conditions and Leber's myopathy.
• Coffin syndrome 1: A rare inherited syndrome characterized mainly by spasticity, seizures, congenital heart defects, short stature and delayed mental and motor development.
• Coffin-Lowry syndrome: A rare genetic disorder characterized by down slanting space between eyelids, bulbous nose, soft hands and tapering fingers.
• Coleman Randall syndrome: A rare condition (one reported case) characterized by deafness, underdeveloped gonads, pili torti and a deficiency of growth and luteinizing hormone.
• Colic: Abdominal spasms causing pain
• Collagenous celiac disease: Collagenous celiac disease is used to describe progressive celiac disease characterized by the presence of a layer of collagen (scarring) in the intestinal layers. This form of celiac disease usually fails to respond to treatments such as gluten-free diets. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The condition usually fails to respond to treatment and has a poor prognosis.
• Colpocephaly: A rare brain malformation that is present at birth. The cavities present at the back of the brain are larger than normal as the brain tissue has failed to develop normally to fill some of the space. Severity of symptoms are variable depending on the degree of abnormality.
• Combarros Calleja Leno syndrome: A rare disorder characterized by the association of glaucoma at birth with a form of ataxia.
• Compartment syndrome: compartment syndrome involves the compression of nerves and blood vessels within an enclosed space. This leads to impaired blood flow and muscle and nerve damage
• Complex 1 mitochondrial respiratory chain deficiency: A rare genetic defect where an enzyme deficiency (NADH CoQ) disrupts cellular processes and causes various organic acid disorders. Any of a variety of the components of the enzyme may be missing or defective and hence the clinical presentation and severity may vary. Presentation may range from infantile death to various disorders such as Leigh's disease, Parkinson's disease and cardiomyopathy.
• Complex 2 mitochondrial respiratory chain deficiency: A rare genetic defect where an enzyme deficiency (succinate CoQ reductase) disrupts cellular processes. The deficiency may result variable symptoms and condition including conditions such as Leigh's syndrome, myopathy and Kearns-Sayre syndrome.
• Complex 5 mitochondrial respiratory chain deficiency: A rare genetic defect where an enzyme deficiency (ATP synthetase) disrupts cellular processes. Any of a variety of the components of the enzyme may be missing or defective and hence the clinical presentation and severity may vary. The deficiency may result in a variety of symptoms and conditions of variable severity such as Leber's myopathy, Leigh syndrome, cardiomyopathy and NARP (neuropathy, ataxia, retinitis pigmentosa).
• Complex partial seizure: A complex seizure is an electrical disturbance that originates in only one part of the brain and resulting in symptoms related to the body functions or parts that are controlled by that part of the brain. Partial seizures where the patient has altered consciousness are called complex partial seizures. During a simple partial seizure movement, sensations, feelings or emotions may be affected. Partial seizures may spread to other parts of the brain and are then called generalized seizures. These seizures usually only last a few minutes.
• Complex partial seizure disorder: Complex partial seizure disorder is an electrical disturbance that originates in only one part of the brain and resulting in symptoms related to the body functions or parts that are controlled by that part of the brain. Partial seizures where the patient has altered consciousness are called complex partial seizures. During a simple partial seizure movement, sensations, feelings or emotions may be affected. Partial seizures may spread to other parts of the brain and are then called generalized seizures. These seizures usually only last a few minutes.
• Congenital Disorders of Glycosylation: Congenital disorders of glycosylation is a group of disorders involving abnormally synthesis of N-linked oligosaccharides. There is a long chain of events involved in the synthesis and defects may occur with any of the compounds or enzymes involved in the process. Progressive impairment and regression of skills often occurs after a period of normal development following birth.
• Congenital Gigantism with Skeletal Dysplasia: A rare syndrome characterized mainly by the association of a large size at birth with various skeletal anomalies.
• Congenital Muscular Dystrophy: Muscle weakness and wasting that starts at birth or around the time of birth. The severity and extent of muscle involvement is greatly variable.
• Congenital SMA with arthrogryposis: Type of SMA (genetic motor neuron disease) appearing from birth
• Congenital cystic eye, multiple ocular and intracranial anomalies: A rare birth syndrome characterized by various eye and brain abnormalities, The eye abnormality is a developmental disorder where a large cyst forms instead of one eye. The size of the cyst is variable.
• Congenital cytomegalovirus: Fetal infection with cytomegalovirus.
• Congenital disorder of glycosylation type 1/IIX: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type I/IIX refers to cases where the specific abnormality cannot be determined.
• Congenital disorder of glycosylation type 1D: A very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 1D has a ?1,3-Mannosyl transferase enzyme defect.
• Congenital disorder of glycosylation type 1E: A very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 1E has a Dol-P-Man synthase enzyme defect.
• Congenital disorder of glycosylation type 1F: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type IF is caused by a defect on chromosome 17p13.1-p12 and involves a defect on the MPDU1 gene.
• Congenital disorder of glycosylation type 1G: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type IG is caused by a defect on chromosome 22q13.33 and involves the gene for a particular enzyme (dolichyl-P-mannose:Man-7-GlcNAc-2-PP-dolichyl-alpha-6-mannosyltransferase).
• Congenital disorder of glycosylation type 1I: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type Ii is caused by a defect on chromosome 9q22 and involves a defect on the ALG2 gene.
• Congenital disorder of glycosylation type 1J: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type Ij is caused by a defect on chromosome 11q23.3 and involves a defect on the gene for UDP-GlcNAc:dolichyl-phosphate N-acetylglucosamine phosphotransferase.
• Congenital disorder of glycosylation type 1K: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type Ik is caused by a defect on chromosome 16p13.3 and involves a defect in the gene for beta-1,4-mannosyltransferase. The disorder is generally fatal within a year or two of birth.
• Congenital disorder of glycosylation type 1L: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type Il is caused by a defect on chromosome 11q23 and involves a defect in the ALG9 gene.
• Congenital disorder of glycosylation type 1M: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type Im is caused by a defect on chromosome 9q34.11 and involves a defect in the TMEM15 gene.
• Congenital disorder of glycosylation type 1X: Congenital disorder of glycosylation is a rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 1X also involves thrombocytopenia with normal levels of phosphomannomutase and phosphomannose isomerase. This form of the condition is severe and results in death during infancy.
• Congenital disorder of glycosylation type 2A: A very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 2A has a GlcNAc transferase 2 enzyme defect.
• Congenital disorder of glycosylation type 2B: A very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 2B has glucosidase I enzyme defect.
• Congenital disorder of glycosylation type 2C: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 2c is caused by a defect on chromosome 11p11.2 and involves a defect in the gene for GDP-fucose transporter.
• Congenital disorder of glycosylation type 2E: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 2e is caused by a defect on chromosome 16p and involves a defect in the gene for oligomeric complex-7.
• Congenital disorder of glycosylation type IIH: Congenital disorders of glycosylation is a group of very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type IIh is caused by a defect on chromosome 16q22.1 and involves a defect on the COG8 gene.
• Congenital disorder of glycosylation, type In: A very rare inherited metabolic disorder where defective carbohydrate compounds are attached to glycoproteins and thus impairing glycoprotein function. Type 1n involves a defect in the RFT1 gene and is characterized mainly by enlarged liver, seizures, developmental delay, reduced muscle tone and abnormal blood coagulation.
• Congenital hepatic porphyria: A rare congenital disorder where there is an excess of porphyrin (pigments) in the body. The liver is responsible for making porpyrins.
• Congenital herpes simplex: An infant born with a herpes simplex infection transmitted through the mother. The infection may be localized or involve various internal organs and even the central nervous system in which case death can occur.
• Congenital hypoparathyroidism, seizures, growth and mental retardation and unusual facies: A rare syndrome characterized mainly by growth and mental retardation, seizures, unusual facial appearance and congenital hypoparathyroidism.
• Congenital ichthyosis, microcephalus, quadriplegia: A rare birth disorder characterized by scaly skin, small head and paralysis of legs and arms.
• Congenital myopathy: A very rare inherited disorder where muscles are overly-responsive to stimuli because of an abnormality in the muscle membranes. It causes prolonged muscle contraction which is muscle stiffness. The two main forms of myotonia congenital are Thomsen and Becker disease which are respectively inherited dominantly and recessively.
• Conn's syndrome: An adrenal gland disorder where excess aldosterone hormone is produced resulting in symptoms such as headache, fatigue, nocturia and increased urine production. Also called primary hyperaldosteronism.
• Connective tissue disorders: Any condition affecting connective tissues.
• Connective tissue dysplasia, Spellacy type: A very rare syndrome caused by an inherited collagen disorder and characterized by skin abnormalities, skeletal and eye anomalies and joint problems.
• Continuous spike-wave during slow sleep syndrome: A rare form of epilepsy that occurs between the ages of 3 and 7 and is diagnosed by the observation through an EEG of continuous spike and wave discharges during the slow sleep phase which is detected. The seizures often occur during sleep. Children outgrow the condition before adulthood but some of the effects of the disorder may continue longer.
• Conversion Disorder: A psychological condition where physical symptoms arise due to emotional dilemmas.
• Convulsions: A series of involuntary contractions of voluntary muscles.
• Convulsions, benign familial infantile, 1: An inherited form of seizures that occurs in infancy and early childhood. Symptoms only occur during the seizures. The seizures tend to occur in clusters.
• Copper deficiency, familial benign: A rare inherited copper deficiency. Copper has many functions in the body including heart function, cholesterol metabolism, brain development, immune defenses, blood supply, glucose metabolism and normal bone development.
• Corn Lily poisoning: Corn Lily is a poisonous plant native to the Sierra Nevada mountains. It's appearance is similar to the corn grown as a crop. The plant poison primarily affects the nervous system.
• Corneal cerebellar syndrome: A very rare syndrome involving eye problems and progressive motor control problems such as ataxia and weakness on one side of the body.
• Cornelia de Lange syndrome 2: A very rare disorder involving delayed physical development and various malformations involving the head, face and limbs. Type 2 is not as severe as type 1 with some of the abnormalities not presenting until later in life or absent altogether. The range and severity of symptoms is variable.
• Corpus callosum agenesis: A very rare congenital abnormality where part or all of the fibers that connect the two halves of the brain (corpus callosum) are missing.
• Corpus callosum agenesis-neuropathy: A rare genetic disorder involving mental retardation, progressive neuropathy and absence of the fibers that connect the two halves of the brain together.
• Corpus callosum dysgenesis X-linked recessive: Partial or complete lack of development of the structure that divides two sides of the brain (corpus callosum). As the condition is X-linked, it only occurs in males.
• Corpus callosum dysgenesis cleft spasm: A rare condition characterized by the association of abnormal development of the part of the brain called the corpus callosum, cleft lip or palate and spasms. Variable other symptoms may also be present.
• Cortes-Lacassie syndrome: A rare syndrome characterized by nail, hair and teeth abnormalities, malformed hands and feet and seizures. The disorder has only been reported in one cause which resulted in death at 31 months
• Cortical dysplasia - focal epilepsy syndrome: Abnormal development of the brain cortex which results in focal epilepsy and progressive neurological deterioration once the epilepsy starts in early childhood.
• Corticobasal Degeneration: A rare progressive neurological disorder where parts of the brain deteriorate.
• Coughing spasms: Spasms of coughing attacks
• Crack addiction: An uncontrollable desire to use crack on a regular basis. Chronic crack use can lead to dependency in as little as two weeks. Crack is a form of cocaine - powdered cocaine is heated with ammonia or sodium bicarbonate to make rocks of crack. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
• Cramp-fasciculations syndrome: A rare condition characterized by muscle pain, cramps, twitching, spasms and other abnormal sensations that occur mainly in the limbs.
• Cranio osteoarthropathy: A very rare syndrome characterized by large fontanelles, joint problems and finger clubbing.
• Craniodiaphyseal dysplasia: A very rare bone disorder where excess calcium is deposited mainly in the skull bones which can result in compression of various nerves in the skull and even the brain.
• Craniostenosis with congenital heart disease mental retardation: A very rare disorder characterized mainly by premature fusion of the sagittal skull bones, mental retardation and heart disease that is present at birth. The disorder generally involves other variable features.
• Craniosynostosis: A defect involving the fusion of one or more bones in the skull before it has finished growing which affects the head size and shape and can affect the growth of the brain. The defect is often associated with other conditions. Symptoms are determined by which skull bones are prematurely fused.
• Craniosynostosis Fontaine type: A very rare disorder characterized primarily by the premature fusion of skull bones, hand, foot and stomach anomalies and a brain malformation (bilateral periventricular nodular heterotopia).
• Craniosynostosis mental retardation clefting syndrome: A rare disorder characterized by premature fusion of the skull bones (craniosynostosis), mental retardation a cleft lip and/or palate.
• Craniotelencephalic dysplasia: A very rare syndrome characterized primarily by premature fusion of various skull bones and abnormal brain development.
• Creatine deficiency, X-linked: A rare inherited disorder characterized mainly by mental retardation, seizures, short stature and facial anomalies. The disorder is caused by the absence of a compound needed to transport creatine and thus creatine levels may be normal or high, but the body is unable to utilize it.
• Cree leukoencephalopathy: A rare form of brain demyelination which usually starts between 3 and 9 months of age and death occurs by 21 months.
• Creutzfeldt-Jakob Disease: A very rare degenerative brain disease that can be inherited, transmitted (eg in surgical transplants using infected tissue) or as a result of genetic mutations. The condition is fatal.
• Crisponi syndrome: A very rare syndrome characterized by excessive muscle contractions in response to stimulus, claw hand, distinctive facial features and fever. Most patients die within months of birth due to complications of hyperthermia but some cases are slowly progressive with longer survival possible.
• Croup: A condition characterized by an acute partial obstruction of the upper airway on young children
• Cutaneomeningospinal angiomatosis: A rare inherited disorder involving a skin birthmark as well as a blood vessel malformation in the spinal cord (angioma). The severity of the spinal involvement is variable with neurological problems occurring as a result of compression of the spinal cord or bleeding. Other cases may be undiagnosed as the cause no symptoms.
• Cutis verticis gyrata mental deficiency: A rare inherited disorder characterized by mental retardation, seizures and eye and movement problems.
• Cycad poisoning: Cycads are a green plant which has a thick trunk from the top of which sprouts palm-like leaves. Eating the seeds, leaves or unprocessed flour made from the trunk of the plant can cause various symptoms if large quantities are eaten. The harmful compounds in the plant are glycosides and BMAA
• Cyclosporine toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Cysticercosis: An infectious disease caused by the pork tapeworm Taenia solium. If the larvae are ingested then a mild or asymptomatic tapeworm infection occurs. However, ingested eggs pass into the bloodstream where they can then enter various tissues and form the cysts that characterize cysticercosis.
• Cystinuria - lysinuria: A rare metabolic disorder characterized by the excessive excretion of certain amino acids (lysine and cystine) in the urine. Neurological symptoms are common.
• Cytochrome c oxydase deficiency, French-Canadian type: A rare, progressive, inherited metabolic disorder where a deficiency of the enzyme cytochrome C oxidase affects skeletal muscles, connective tissue, brain and liver.
• DEND syndrome: An inherited disorder characterized by developmental delay, epilepsy and diabetes.
• DIDMOAD Syndrome, Mitochondrial form: A rare association of diabetes insipidus, diabetes mellitus, optic atrophy and deafness which results in mitochondrial defects.
• Da Costa syndrome: Cardiovascular symptoms caused by physical or emotional stress but may also be caused by conditions such as mitral valve prolapse and autonomic hyperactivity. The syndrome is often seen in soldiers during times of stress or in young adults who suffer emotional stress.
• Dancing Eye syndrome: Dancing eye syndrome is a rare neurological condition characterized by abnormal eye movements where the eyes seem to move randomly all over the place. Jerky limb movements are also often present. The severity of the condition and response to treatment varies considerably amongst patients.
• Dandy-Walker - facial hemangioma: A very rare syndrome characterized mainly by a brain malformation (Dandy-Walker) and a hemangioma on the face (mass of dilated blood vessels).
• Dandy-Walker malformation with mental retardation, basal ganglia disease, and seizures: A rare X-linked syndrome characterized mainly by mental retardation and seizures.
• Dandy-Walker malformation with mental retardation, macrocephaly, myopia, and brachytelephalangy: A very rare syndrome characterized mainly by mental retardation, large head, short fingers, nearsightedness and brain abnormalities (Dandy-Walker type).
• Davenport-Donlan syndrome: A very rare syndrome characterized mainly by deafness, white hair, contractures and papillomas.
• De Grouchy Syndrome: A rare chromosomal disorder where a portion of chromosome 18 is missing. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• De Lange 1: A rare disorder involving a variety of congenital abnormalities including retarded growth, behavioral problems, characteristic facial features and upper limb abnormalities.
• De Sanctis-Cacchione syndrome: A rare genetic ectodermal disorder characterized by sunlight sensitivity, skin atrophy and pigmentation and skin tumors as well asneurologic involvement.
• Deadly nightshade (Solanum dulcamara) poisoning: The deadly nightshade is a woody vine and is considered quite toxic. It is found in Europe, Asia, North Africa and North America. There are a number of species of nightshade with variable toxicity. The Solanum dulcamara is considered less toxic with about 200 berries needed to cause death.
• Deafness - onychodystrophy - osteodystrophy - mental retardation: A very rare inherited disorder involving deafness (D), onychodystrophy (O - nail malformation), osteodystrophy (O - bone malformation) and mental retardation (R).
• Deafness - skeletal dysplasia - lip granuloma: A very rare syndrome characterized mainly by deafness, skeletal abnormalities, mental retardation and full lips.
• Deafness hyperuricemia neurologic ataxia: A rare inherited disorder characterized by a high level of uric acid in the blood, renal insufficiency, ataxia and deafness.
• Deafness, congenital onychodystrophy, recessive form: A very rare inherited disorder involving deafness (D), onychodystrophy (O - nail malformation), osteodystrophy (O - bone malformation) and mental retardation (R).
• Decerebrate posturing: Rigid extension of a persons legs as a result of decerebration.
• Decerebrate rigidity: is a condition of increased muscle tone and stretch reflexes, particularly in extensor muscles
• Decompression sickness: Condition from overly rapid decompression, especially when diving.
• Decreased mobility: in some conditions the patients cannot move about
• Defect in synthesis of adenosylcobalamin: A rare genetic disorder characterized by the impaired ability to make a chemical called adenosylcobalamin. Adenosylcobalamin is a derivative of vitamin B12. The defect results a biochemical abnormality which affects the body's normal biochemical functioning.
• Deficiency of Member 8 Acyl-CoA Dehydrogenace Family: An extremely rare metabolic disorder where the body is unable to metabolize certain proteins properly. More specifically, an insufficient level of the enzyme (isobutyryl-coenzyme A dehydrogenase) needed to metabolize the amino acid valine. The onset and severity of symptoms is variable.
• Degenerative motor system disease: Any of a number of condition characterized by destruction of nerves that carry signals to muscles (motor neurons) and results in various muscle problems. The nerve destruction is often progressive leading to increasingly severe muscle problems.
• Del (1) (pter-p36.3) mosaicism: A very rare chromosomal disorder where the end portion of the short arm of chromosome one is missing in some body cells. The type and severity of symptoms is variable.
• Del(1) (pter-p36.2): A very rare chromosomal disorder where the end portion of the short arm of chromosome one is missing. The type and severity of symptoms is variable.
• Del(1) (q25-q32): A very rare chromosomal disorder where a portion of the long arm (q25-q32) of chromosome one is missing. The range and severity of symptoms is variable.
• Del(1) (q42-qter): A very rare chromosomal disorder where a portion of the long arm (q42-qter) of chromosome one is missing. The type and severity of symptoms is variable.
• Deletion 10q: A rare disorder caused by the deletion of a portion of chromosome 10q. The range and severity of symptoms is determined by the size of the portion that is deleted.
• Deletion 11p: A syndrome that is caused by the deletion of short arm (p) of chromosome 11. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Deletion 18q: A rare chromosomal disorder where a portion of chromosome 18 is missing. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Deletion 20p: A rare chromosomal disorder where the short arm (p) of chromosome 20 is deleted resulting in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Deletion 22q13: A very rare chromosomal disorder where a portion of chromosome 22 is missing at the q13 location which results in various abnormalities.
• Deletion 2q: A rare chromosomal disorder where part of the long arm (q) of chromosome 2 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Deletion 2q24: A genetic disorder characterized by the deletion of a portion of the long arm of chromosome 2.
• Deletion 3p: A rare chromosomal disorder where a portion of chromosome 3 is absent and is characterized by mental and growth deficiency, drooping upper eyelid and extra digits.
• Deletion 4p: A rare chromosomal disorder where part or all of the short arm (p) of chromosome 4 is deleted resulting in various abnormalities which are determined by the size of the deleted portion.
• Deletion 6q: A rare chromosomal disorder where a part of the long arm (q) of chromosome 6 is deleted resulting in various abnormalities depending on the location and length of missing genetic material.
• Delleman-Oorthuys syndrome: A rare birth disorder characterized by eye cavity cysts, brain anomalies, facial skin tags and various other skin lesions.
• Delphinium poisoning: Delphinium is a member of the Buttercup family and contains toxic alkaloids. It's seeds are very toxic but other parts of the plant are also poisonous. As the plant ages, it becomes less poisonous. Toxicity varies amongst species.
• Delta-1-pyrroline-5-carboxylate dehydrogenase deficiency: A rare metabolic abnormality involving a deficiency of a particular enzyme (Delta-1-pyrroline-5-carboxylate dehydrogenase) which affects amino acid metabolism and causes mental retardation and convulsions.
• Dementia With Lewy Bodies: Second most frequent cause of dementia in elderly adults.
• Dementia, familial British: A rare, early-onset inherited form of dementia caused by deposits of amyoid substances (amyloid) and degenerative nerve changes in the brain.
• Demerol withdrawal: Symptoms that occur when Demerol use is discontinued or reduced. Demerol is a pain-killing drug. Symptoms may vary depending on the level of dependence.
• Demyelinating disorder: Any condition that is characterised by the destruction of the myelin sheaths of the nerves
• Dennis cohen syndrome: A rare syndrome characterized mainly by unusual facial appearance, mental retardation, short stature and sparse hair.
• Dentatorubral Pallidoluysian Atrophy: A condition caused by an abnormality of the DNA sequence on chromosome 12
• Deposition diseases related fibromyalgia: Deposition diseases related fibromyalgia refers to fibromyalgia that is associated with deposition diseases. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues. Deposition diseases involve the abnormal deposit of material in parts of the body such as the joints e.g. gout.
• Depressive disorders: Depression or its various related conditions.
• Depressive symptoms: Inappropriate depressed mood.
• Dermatomyositis: A muscle disease characterized by chronic muscle inflammation resulting in progressive muscle weakness and a characteristic rash.
• Dermochondrocorneal dystrophy of François: A rare condition characterized by osteochonral deformity (abnormal bone and cartilage development) of the hands and feet, dystrophy of the corneas and skin nodules on certain parts of the body.
• Desbuquois dysplasia-like syndrome: A rare syndrome characterized by various anomalies similar to Desbuquois syndrome but there is no mental retardation, hand abnormalities or facial anomalies involved.
• Desmoplastic cerebral astrocytoma of infancy: A rare type of brain tumor that occurs in infants. The tumor consists of cancerous astrocytes.
• Desmoplastic infantile ganglioma: A rare type of brain tumor that occurs in infants. The tumor may be slow-growing and benign or fast-growing and malignant.
• Developmental delay - epilepsy - neonatal diabetes: A rare syndrome characterized mainly by developmental delay, epilepsy and early-onset diabetes.
• Developmental delay - hypotonia extremities hypertrophy: A very rare syndrome characterized mainly by poor muscle tone, developmental delay.
• Developmental delay due to 2-methylbutyryl-CoA dehydrogenase deficiency: A very rare genetic disorder where an enzyme deficiency prevents the break down of certain proteins into energy and results in a harmful accumulation of acids in the blood and body tissues. More specifically, there is a deficiency of an enzyme (2-methylbutyryl-coenzyme A dehydrogenase) needed to convert the amino acid isoleucine into energy. 2-methylbutyrylglycine levels build up in the body and may cause damage. Symptoms vary according to the degree of enzyme deficiency - can range from asymptomatic to life-threatening.
• Devriendt syndrome: A rare syndrome characterized mainly by Robin sequence, short stature and seizures.
• Dexedrine overdose: Dexedrine is a prescription drug mainly used to treat attention deficit hyperactivity disorder and narcolepsy. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• DiGeorge syndrome: 22q11.2 deletion syndrome is a genetic disorder which can result in a vast array of symptoms. Various names have been used to describe different manifestations of the syndrome. Di George Syndrome primarily involves an underdeveloped thymus and parathyroid glands which results in lowered immunity low blood calcium levels respectively. Another primary feature is heart defects. Various other variable features are also present. It is not uncommon for patients to have more than one of the 22q11.2 deletion syndrome subtypes which can make diagnosis confusing - other subtypes include Sphrintzen syndrome, Caylor cardiofacial syndrome and CATCH 22.
• Diabetes Insipidus, Neurogenic: A disturbed water balance due to a deficiency of vasopressin (antidiuretic) hormone which causes excessive thirst and urination. Causes include autoimmune disease, malignancy, trauma, infection and blood vessel disease.
• Diabetes insipidus, diabetes mellitus, optic atrophy: A rare association of diabetes insipidus, diabetes mellitus, optic atrophy, and deafness.
• Diabetes insipidus, diabetes mellitus, optic atrophy, deafness, mitochondrial form: A rare association of diabetes insipidus, diabetes mellitus, optic atrophy and deafness which results in mitochondrial defects.
• Diabetes insipidus, nephrogenic type 2: A rare congenital condition where the kidney fails to respond to the antidiuretic hormone (arginine vasopressin), thus preventing reabsorption of water. This results in excessive urination and thirst. Type II is specifically caused by a defect in the AQP2 gene on chromosome 12q13.
• Diabetes insipidus, nephrogenic, dominant type: A rare dominantly inherited, congenital condition where the kidney fails to respond to the antidiuretic hormone (arginine vasopressin), thus preventing reabsorption of water. This results in excessive urination and thirst. The condition is specifically caused by a defect in the AQP2 gene on chromosome 12q13.
• Diabetes insipidus, nephrogenic, recessive type: A rare recessively inherited, congenital condition where the kidney fails to respond to the antidiuretic hormone (arginine vasopressin), thus preventing reabsorption of water. This results in excessive urination and thirst. The condition is specifically caused by a defect in the AQP2 gene on chromosome 12q13.
• Diabetic hypoglycemia: Low blood sugar attack from insulin or diabetes medications
• Dialysis encephalopathy syndrome: A progressive brain disease that occurs in some patients who undergo chronic hemodialysis. Aluminium intoxication is believed to play a role in the disease.
• Dialysis-related amyloidosis: Amyloidosis (protein deposits) from kidney dialysis treatment.
• Diffuse idiopathic skeletal hyperostosis: A type of degenerative joint disease where spinal column ligaments lose their flexibility due to calcification.
• Digitorenocerebral syndrome: A very rare syndrome characterized by numerous abnormalities involving the brain, kidneys, fingers, toes, nails and face as well as mental retardation and vision impairment.
• Dihydropyrimidine dehydrogenase deficiency: A metabolic error where a deficiency of an enzyme called dihydropyrimidine dehydrogenase prevents the normal metabolism of certain proteins. High levels of certain proteins are excreted in the urine. The enzyme is also needed the breakdown a chemotherapy drug called 5-flurouracil and its absence can result in a severe toxicity reaction.
• Dilaudid withdrawal: Symptoms that occur when Dilaudid use is discontinued or reduced. Dilaudid is a pain-killing drug. Symptoms may vary depending on the level of dependence. Symptoms are usually peak during the second day and last about a week.
• Dilutional hyponatremia: Low sodium levels due to excessive fluids.
• Diomedi-Bernardi-Placidi syndrome: A very rare syndrome characterized mainly by epilepsy, mental retardation and progressive leg weakness and spasticity.
• Dionisi-Vici-Sabetta-Gambarara syndrome: A very rare syndrome characterized mainly by brain abnormality, cataract and immunodeficiency.
• Discontinuation syndrome: Symptoms that can occur when a person suddenly stops taking their high blood pressure medication.
• Dislocated elbow: Dislocation of the elbow joint
• Dislocation: Bone dislocated from a joint
• Distal arthrogryposis syndrome: A rare genetic disorder characterized by congenital contractures and other physical defects.
• Distinctive Craniofacial Features - Pterygia - Mental Retardation: A very rare syndrome characterized mainly by short stature, underdeveloped genitals and various skull and facial anomalies.
• Diverticular Disease: Protrusions of the colon wall (diverticulosis) or their inflammation (diverticulitis)
• Dobriner syndrome: An inherited metabolic disorder involving a deficiency of coproporphyrinogen oxidase. The condition is similar to but milder than intermittent porphyria and sometimes includes photosensitivity.
• Donepezil toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Double cortex syndrome: A rare brain development disorder which causes mental retardation and epilepsy. An extra layer of nerves develops under the brain cortex.
• Down Syndrome: A chromosome syndrome causing physical effects and mental retardation.
• Down's Syndrome associated Alzheimer's disease: Early-onset Alzheimer's is more prevalent in Down's Syndrome sufferers than in the general population. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Down's syndrome associated Celiac Disease: Patients with Down's syndrome have a high degree of susceptibility to developing celiac disease. Up to 17% of Down's syndrome sufferers develop celiac disease but this rate varies amongst age groups and country of origin. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Dravet syndrome: A rare, severe form of generalized infant epilepsy that starts after a fever. Initial infant development is normal but once the seizures start, psychomotor development slows and mental decline occurs. The seizures usually occur every month or two to start with.
• Drowsiness: Excessive tiredness or sleepiness
• Dup (1) (q32-qter) and del (7)(q32-qter): A very rare chromosomal disorder where a portion of the long arm (q32-qter) of chromosome one is duplicated and the long arm of chromosome 7 (q32) is deleted. There have only been a couple of reported cases and symptoms may vary somewhat between patients.
• Dup(1) (q24-q41): A very rare chromosomal disorder (two reported cases) where a portion of the long arm (q24-q41) of chromosome one is duplicated. The type and severity of symptoms may vary - one patient died soon after birth whereas the other survived with severe problems.
• Duplication 12p: A rare chromosomal disorder where there are three copies of the short arm (p) of chromosome 12 rather than the normal two resulting in various abnormalities. The type and severity of symptoms depend on the amount and location of genetic material deleted.
• Duplication 12q: A rare chromosomal disorder where there are three copies of the long arm (q) of chromosome 12 rather than the normal two resulting in various abnormalities. In most cases, death occurs during infancy. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is duplicated.
• Duplication 13: A rare and very severe chromosome disorder leading to mental retardation and physical defects. It is so severe that many babies die soon after birth. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is duplicated.
• Duplication 2q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 2 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Duplication 5p: A rare chromosomal disorder where there are three copies of all or part of the short arm (p) of chromosome 5 rather than the normal two. The type and severity of symptoms is determined by the location and size of the genetic material duplicated.
• Duplication 5q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 5 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Duplication 6q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 6 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Duplication 7q: A rare chromosomal disorder involving duplication of the long arm (q) of chromosome 7 which results in various abnormalities depending on the size and location of the portion of duplicated genetic material.
• Duplication 8q: A rare chromosomal disorder where the long arm (q) of chromosome 8 is duplicated resulting in variable abnormalities depending on the location and length of genetic material deleted.
• Dupuytren's contracture: A progressive condition involving the thickening of deep tissue that runs from the palm to the fingers which results in the fingers being pulled into the palm
• Dwarfism - stiff joint - ocular abnormalities: A very rare form of dwarfism characterized by short stature as well as stiff joints and eye abnormalities.
• Dwarfism - syndesmodysplasic: A very rare form of dwarfism involving extremely short stature and progressive joint stiffness.
• Dyggve-Melchior-Clausen Syndrome: A rare genetic bone growth disorder characterized by short stature and other skeletal deformities.
• Dysbarism: A reaction caused by exposure to a sudden change in environmental pressure.
• Dysequilibrium syndrome: A very rare syndrome characterized mainly by mental retardation and nonprogressive incoordination.
• Dysharmonic skeletal maturation - muscular fiber disproportion: A very rare syndrome characterized mainly by abnormal bone development and muscle problems.
• Dysostosis: Defective bone formation.
• Dysthymia: Chronic depression usually associated with elderly people suffering stress from a variety of causes.
• Dystonia: A neurological disorder involving involuntary sustained muscle contractions.
• Dystonia 1, Torsion, Autosoma Dominant: A rare movement disorder where the patients suffers uncontrollable muscle contractions and distortion of body position. The limbs are usually involved first and then the condition spreads to other parts of the body.
• Dystonia 12: A very rare syndrome involving the early start of symptoms of dystonia and parkinsonism. The onset of the symptoms usually occurs suddenly over weeks or even hours and then progresses slowly.
• Dystonia 4, Torsion, Autosomal Dominant: An inherited movement disorder where the muscles contract and contort uncontrollably due to neurological dysfunction. Usually speech is affected first.
• Dystonia 6, torsion: A rare inherited movement disorder where the patient suffers involuntary muscle contractions and distortion of body position. Symptoms usually start in one limb and then spread to other limbs.
• Dystonia Musculorum Deformans 1: A rare movement disorder where the patients suffers uncontrollable muscle contractions and distortion of body position. The limbs are usually involved first and then the condition spreads to other parts of the body.
• Dystonia musculorum deformans type 1: A rare movement disorder where the patient suffers involuntary muscle contractions and distortion of body position. The trunk, neck and limbs are usually involved first.
• Dystonia musculorum deformans type 2: A rare recessively inherited movement disorder where the patient suffers involuntary muscle contractions and distortion of body position. The hands and feet are usually involved first.
• Eales Disease: A rare eye disorder characterized by sudden vision loss, problems with eye blood vessuls and reoccurring eye blood vessel hemorrhages as well as oozing of clear thick fluid from inside the eyeball. Usually occurs after a stressful situation, trauma or after waking up.
• Early-onset Alzheimer's: Early-onset Alzheimer's is a form of Alzheimer's disease that is linked to genetic defects or occurs in a familial pattern. It is not as common as the non-inherited form of Alzheimer's - occurs in up to 90% of Alzheimer sufferers. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• East African Trypanosomiasis: East African sleeping sickness from the tsetse fly
• Eclampsia: serious complication of pregnancy and is characterised by high blood pressure and convulsions
• Ecstasy overdose: Ectsasy is an illegal and highly addictive recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Ectopia lentis, isolated: A rare syndrome characterized by dislocation of eye lenses which often occurred at birth.
• Edinburgh malformation syndrome: A rare syndrome characterized mental and physical retardation, infant death and various other abnormalities.
• Ehlers-Danlos syndrome with periventricular heterotopia: The association of a brain malformation (periventricular nodular heterotopia) with a connective tissue disorder called Ehlers-Danlos syndrome.
• Ehlers-Danlos syndrome, X-linked: A rare developmental brain abnormality. Type 1 is caused by a defect on chromosome Xq28.
• Ehrlichiosis: Bacterial tick-borne disease
• Eijkman's syndrome: A group of nervous symptoms that is associated with vitamin B1 (thiamine) deficiency. The deficiency leads to a condition called Beri-Beri. Severe cases result in progressive paralysis leading to convulsions and death as the nerves become increasingly inflamed and wasted.
• Elapid poisoning: Sea snakes, Kraits and cobras are from the Elapid group of snakes. The toxicity of the venom varies depending on the species. The venom is usually toxic to the nerves or heart. Early symptoms such as drowsiness can occur within 30 minutes with more severe symptoms developing over the next few hours. Severe envenomation can result in death within hours.
• Elbow Arthritis: Inflammation of the elbow joint. The inflammation can be the result of such things as degenerative joint disease, gout, infection, trauma and autoimmune conditions.
• Elbow Osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the elbow joint as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Elbow conditions: Conditions that affect the elbow
• Elbow spasm: A sudden involuntary contraction of the muscles of the elbow joint.
• Elbow sprain: Damage to ligaments in the elbow.
• Electrical burns: Burns caused when an electric current pass through the body or part of it. The symptoms and severity of the burn depends on the strength of the electrical current, the duration of the exposure and the part of the body involved. Prompt treatment in more severe cases can improve the prognosis.
• Electrocution: Any injury caused by electricity
• Emanuel syndrome: A rare chromosomal disorder where a portion of chromosome 11 is translocated with a portion of chromosome 22. The disorder involves a wide range of abnormalities such as kidney, genital and heart abnormalities, mental retardation, small head and failure to thrive.
• Emery-Dreifuss muscular dystrophy, X-linked: A muscle wasting disorder mainly involving the muscles in the arms, legs, face, neck, spine and heart. Symptoms generally only occur in males but female carriers may have some symptoms.
• Emery-Dreifuss muscular dystrophy, dominant type: A rare disorder characterized by slowly-progressing weakness and wasting of skeletal and heart muscles. The dominant form of the disease is associated with greater variability of symptoms.
• Encephalitis: Infection of the brain (as a symptom)
• Encephalo cranio cutaneous lipomatosis: A rare genetic disorder characterized by craniofacial lipomas, cerebral atrophy and patches of alopecia.
• Encephalocele anterior: Protrusion of a portion of the brain tissue through a skull defect in the anterior portion of the skull. The severity of symptoms depends on the exact location and size of the deformity.
• Encephalocele frontal: Protrusion of a portion of the frontal brain tissue through a skull defect. The severity of symptoms depends on the exact location and size of the deformity.
• Encephaloceles: Improper protrusions of parts of the meninges and brain.
• Encephalopathy - intracranial calcification - growth hormone deficiency - microcephaly - retinal degeneration: A rare condition characterized mainly by brain disease, poor growth due to a deficiency of growth hormone, a small head and vision impairment.
• Encephalopathy due to GLUT1 deficiency: A rare inherited metabolic disorder where a genetic mutation results in the deficiency of an enzyme called glutaryl-CoA dehydrogenase which is required to metabolise certain amino acids (lysine, hydroxylysine and tryptophan). Problems occur when these metabolites build up in the body and cause neurological problems. Symptoms often develop following an acute infection or fasting. The severity of the condition is highly variable from development of neurological symptoms during infancy to asymptomatic adults. The degree of enzyme deficiency will usually determine the severity.
• Encephalopathy due to sulphite oxidase deficiency: An inborn error of metabolism where an enzyme (sulphite oxidase) deficiency results in encephalopathy. Symptoms usually start at birth.
• Encephalopathy progressive - optic atrophy: A rare birth disorder characterized by progressive brain disease, facial anomalies and eye problems.
• Encephalopathy, familial, with neuroserpin inclusion bodies: A rare neurodegenerative disorder involving brain disease due to a genetic chemical abnormality which results in the abnormal deposit of neuroserpin inclusion bodies which is harmful to the nerves.
• Encephalophathy recurrent of childhood: A recurring form of brain disease that has been noted to occur within families. The condition appears to be inherited in an autosomal dominant manner in these families. Symptoms tend to have a recurring nature and can last for periods of days to weeks. The condition is believed to be an inherited predisposition with underlying immunological or metabolic problems which trigger the condition.
• End Stage Liver Failure: Late stage of liver failure characterised by the onset of mental and neurological symptoms, due to build up of toxic metabolites.
• Endomyocardial fibroelastosis: A rare heart malformation involving an abnormal thickening of the part of the heart muscle called the endocardium which affects the heart's function. Death is common in infancy and during early childhood.
• English Laurel poisoning: The English Laurel is an evergreen shrub with elongated spikes of flowers and white fruit with a black stone. The seeds, twigs and wilted leaves of the plant contain chemicals (cyanogenic glycoside, amygdalin) which are very poisonous and can cause death if eaten. The chemicals result in cyanide poisoning.
• Enterocolitis: Serious type of intestinal infection
• Enterovirus antenatal infection: Fetal infection with enterovirus. The condition is extremely rare but infection around the time of birth often results in death or paralysis in survivors. The type and severity of symptoms is determined by the exact type of virus involved and at what stage of development the infection occurs.
• Enteroviruses: Viruses affecting the digestive tract.
• Eosinophilic cystitis: Eosinophilic cystitis is an unusual variant of cystitis that may be characterized by dysuria and hematuria. Biopsy is essential to establish the diagnosis. It usually causes irritative voiding symptoms and hematuria and in its rare tumor-like appearance the disease may mimic an invasive bladder neoplasm.
• Eosinophilic fasciitis: A rare disorder where the skin on the limbs become painfully inflamed and looses it's elasticity.
• Ependymoma: A tumor that occurs in the central nervous system (brain and spinal cord). Symptoms vary according to the aggressiveness, size and exact location of the tumor.
• Epicondylitis: Elbow injury from repeated movements.
• Epidermoid carcinoma: A non-small-cell type of lung cancer. The cancer develops from cells that line the inside of the lungs.
• Epilepsy: Paroxysmal transient disturbances of brain function that may manifest as loss of consciousness, abnormal motor phenomena
• Epilepsy - mental deterioration, Finnish type: A rare disorder that occurs predominantly in people of Finnish origin and is characterized by the association of epilepsy with mental retardation.
• Epilepsy - microcephaly - skeletal dysplasia: A rare syndrome characterized by epilepsy, a small head and skeletal abnormalities.
• Epilepsy - telangiectasia: A rare syndrome characterized by the association of epilepsy with telangiectasias on the conjunctiva of the eyelids.
• Epilepsy benign neonatal dominant form: A recessively inherited form if seizures that starts during early infancy.
• Epilepsy benign neonatal recessive form: A recessively inherited form if seizures that starts during early infancy.
• Epilepsy occipital calcifications: A rare disorder characterized by calcification of the occipital part of the brain, epilepsy. Celiac disease is also usually associated with the disorder.
• Epilepsy with myoclonic-astatic crisis: A form of childhood epilepsy which is associated with a sudden loss of muscle tone which often results in the sufferer falling over and possibly injuring themselves.
• Epilepsy, Pyridoxine-Dependent: A form of epilepsy which responds to pyridoxine hydrochloride administration and not to standard anticonvulsant medication.
• Epilepsy, X-linked - learning disabilities - behavior disorders: An inherited syndrome characterized by epilepsy, behavioral disorders and learning disability. Patients may suffer various combinations of the disorder. The onset of seizures can vary from childhood to adulthood.
• Epilepsy, familial mesial temporal lobe: A dominantly inherited form of epilepsy.
• Epilepsy, familial temporal lobe, 4: A rare inherited epilepsy disorder which also involves migraines and visual aura.
• Epilepsy, idiopathic generalized: A group of epileptic disorders that have genetic links and thus there is usually a family history of epilepsy. There are generally no other anomalies or structural brain abnormalities associated. Symptoms usually start between early childhood and adolescence.
• Epilepsy, idiopathic generalized, susceptibility to, 1: A susceptibility to epilepsy linked to a particular gene - 8q24.
• Epilepsy, idiopathic generalized, susceptibility to, 2: A susceptibility to epilepsy linked to a particular gene - 14q23.
• Epilepsy, idiopathic generalized, susceptibility to, 3: A susceptibility to epilepsy linked to a particular gene - 9q32-q33.
• Epilepsy, idiopathic generalized, susceptibility to, 4: A susceptibility to epilepsy linked to a particular gene - 10q25-q26.
• Epilepsy, idiopathic generalized, susceptibility to, 5: A susceptibility to epilepsy linked to a particular gene - 10p11.22.
• Epilepsy, partial, familial: A form of epilepsy that tends to run in families and is linked to damage or abnormalities in a specific part of the brain. Often sensory disturbances accompany or precede the seizures.
• Epilepsy, pyridoxin-dependent: A form of epilepsy which responds to pyridoxine hydrochloride administration and not to standard anticonvulsant medication.
• Epilepsy, rolandic with paroxysmal exercise-induced dystonia and writer's cramp: A rare disorder characterized by epilepsy, writer's cramp seizures and sudden exercise-induced dystonia. The dystonia could occur in the neck, face, trunk or limbs. The writer's cramp tended to start during childhood and continue into adolescence.
• Epileptic encephalopathy, Lennox-Gastaut type: A rare genetic disorder characterized by mental retardation and physical anomalies. The brain condition is progressive and results in loss of previously acquired skills.
• Epileptic encephalopathy, early infantile, 1: A genetic form of epilepsy which is severe and starts during infancy. This form of the condition is caused by a defect on the ARX gene.
• Epileptic encephalopathy, early infantile, 2: A genetic form of epilepsy which is severe and starts during infancy. The condition is considered an atypical form of Rett syndrome due to the development of stereotypical hand movements and repetitive behaviors. This form of the condition is caused by a defect on the CDKL5 gene.
• Epileptic encephalopathy, early infantile, 3: A genetic form of epilepsy which is severe and starts during infancy. This form of the condition is caused by a defect on the SLC25A22 gene on chromosome 11p15.5.
• Epileptic encephalopathy, early infantile, 4: A genetic form of epilepsy which is severe and starts during infancy. This form of the condition is caused by a defect on the STXBP1 gene.
• Epiphyseal dysplasia - hearing loss - dysmorphism: A rare syndrome characterized mainly by hearing loss, unusual face and bone development abnormalities.
• Epiphyseal dysplasia dysmorphism camptodactyly: A rare syndrome characterized mainly by hearing loss, unusual face and bone development abnormalities.
• Epiphyseal dysplasia, multiple: Abnormalities in the ends of a number of bones resulting in the early onset of osteoarthrosis and joint pain. There are 6 different subtypes of the disease, with each caused by a mutation in a different gene.
• Epiphyseal dysplasia, multiple, 2: Abnormalities in the ends of a number of bones resulting in the early onset of osteoarthrosis and joint pain. It is caused by a defect in the COL9A2 gene.
• Epiphyseal dysplasia, multiple, 3: Abnormalities in the ends of a number of bones resulting in the early onset of osteoarthrosis and joint pain. The knees and ankles are usually the most affected joints. Mild weakness of muscles in the upper arms and legs was also sometimes present. It is believed to be caused by a defect in the COL9A3 gene.
• Epiphyseal dysplasia, multiple, 5: Abnormalities in the ends of a number of bones resulting in the early onset of osteoarthrosis and joint pain. The hips and knees were the main joints involved. It is caused by defects in the gene for matrilin-3 (MATN3).
• Episodic ataxia, type 5: A rare genetic disorder characterized by episodes of incoordination, unsteadiness and seizures. Stress and exertion may trigger the episodes. Type 5 is caused by a defect on chromosome 2q22-q23.
• Episodic ataxia, type 6: A rare genetic disorder characterized by episodes of incoordination and unsteadiness. Stress and exertion may trigger the episodes which tend to last for about half an hour. Type 6 is extremely rare and is caused by a defect on chromosome 5p13.
• Epstein Barr virus related fibromyalgia: Epstein Barr virus related fibromyalgia refers to fibromyalgia that is associated with infection with the Epstein Barr virus. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues.
• Erb's Palsy: Paralysis of the arm or hand often related to childbirth injury (also Brachial plexus palsy).
• Erdheim disease II: A rare condition that occurs as a result of acromegaly which is where excessive growth hormone production results in gigantism. Symptoms include overgrowth of cartilage in parts of the spine and collar bone which causes kyphosis, pain and restricted movement.
• Erythema chronicum migrans: The first stage of Lyme disease which is transmitted by the bite of the Ixodid tick. The first stage involves a skin rash with systemic symptoms also often occurring.
• Erythrokeratodermia ataxia: A rare inherited condition characterized by skin and nervous system disorders
• Ethylmalonic aciduria: A very rare inherited disorder characterized by neurological and vascular symptoms caused by an excessive buildup of ethylmalonic aciduria.
• Eucalyptus Oil poisoning: Eucalyptus oil can be used for medicinal purposes but excessive ingestion can cause problems. Likewise, eating the leaves of the eucalyptus plant (very unlikely) can also cause poisoning symptoms.
• Eugenol oil poisoning: Eugenol oil is used as a supplement or as a therapeutic ingredient in various medications and foods but excessive doses of undiluted oil can cause symptoms. Smoking undiluted cloves in cigarettes can also cause symptoms. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Everlasting pea poisoning: The everlasting pea is a vine which bears pink, pea-like flowers and flat seed pods. It's usually found growing in the wild in many parts of the world. The seeds contains various chemicals (amines, phenol, glycoside) which can cause poisoning symptoms if large quantities are eaten.
• Ewing's family of tumors: A rare condition where tumors develop in bone or soft tissue. Usually teenagers are affected.
• Excessive muscle tone: also called hypertonia is the increase in the contractility of the muscle with decreased stretching
• Exertional headaches: Headaches that occur after physical exertion
• Extradural hematoma: Bleeding in the skull outside the brain
• Eye spasm: A sudden involuntary contraction of the muscles of the eye.
• Eyelid Myokymia:
• Eyelid spasm: A sudden involuntary contraction of the muscles of the eyelid.
• FACWA syndrome: A rare progressive neurological disorder involving degeneration of part of the brain (basal ganglia) and muscle wasting.
• FG Syndrome: A rare genetic disorder characterized by anal abnormalities, reduced muscle tone and a prominent forehead.
• FG syndrome 1: A rare inherited disorder characterized by anal abnormalities, reduced muscle tone and abnormal brain development. In type 1, the genetic defect is located on chromosome Xq12-q21.31.
• FG syndrome 2: A rare inherited disorder characterized by anal abnormalities, reduced muscle tone and abnormal brain development. In type 2, the genetic defect is located on chromosome Xq28.
• FG syndrome 3: A rare inherited disorder characterized by anal abnormalities, reduced muscle tone and abnormal brain development. In type 3, the genetic defect is located on chromosome Xp22.3.
• FG syndrome 4: A rare inherited disorder characterized by anal abnormalities, reduced muscle tone and abnormal brain development. In type 4, the genetic defect is located on chromosome Xp11.4-p11.3.
• FG syndrome 5: A rare inherited disorder characterized by anal abnormalities, reduced muscle tone and abnormal brain development. In type 5, the genetic defect is located on chromosome Xq22.3.
• Facet syndrome: An irritation, sprain or strain involving the vertebral joints of the spine. The exact symptoms may vary depending on the part of the spine involved. The condition most often results osteoarthritis, degenerative disc disease or injury.
• Facial asymetry - temporal seizures: A rare condition characterized mainly by seizures that originate from the temporal lobe of the brain.
• Facial asymmetry - temporal seizures: A rare condition characterized mainly by seizures that originate from the temporal lobe of the brain as well as facial asymmetry.
• Facial dysmorphism - intellectual deficit - short stature - hearing loss: A very rare inherited disorder characterized by retarded growth, mental retardation, bone abnormalities and distinctive facial features.
• Facial myokymia: The involuntary movement of muscles of the face
• Facial spasms: Spasms or twitches of facial muscles
• Fahr's Syndrome: A rare neurologic disorder where calcium is deposited in various parts of the brain resulting in progressive loss of motor and mental function.
• Familial Cold Autoinflammatory Syndrome (FCAS): An inherited inflammatory disorder which causes periods of fever, rash and pain in joints after being exposed to cold conditions. Symptoms last less than a day and start within hours of exposure to the cold.
• Familial Forms of Alzheimer's Disease: Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour. Familial forms of the disease tend to run in families and are linked to mutations on various genes. Chromosome 1, 14 19 and 21 are the main chromosomes where mutations resulting in Alzheimer's are located..
• Familial Mediterranean fever: A rare inherited condition characterized by recurrent fever and inflammation. The inflammation usually involves the stomach, lungs or joints.
• Familial band heterotopia: A rare inherited disorder where a part of the brain tissue is misplaced during development. More specifically, a layer of brain tissue is abnormally located in the white matter.
• Familial dysautonomia: An inherited biochemical disorder that primarily affects the autonomic and sensory nervous system.
• Familial hematuria, autosomal dominant - retinal arteriolar tortuosity - contractures: A rare inherited disorder characterized by blood in the urine, contractures and retinal anomalies.
• Familial hypopituitarism: Impaired pituitary gland hormone-producing activity that tends to run in families. The failure of the pituitary gland in turn affects other hormone-producing glands which rely on the hormones from the pituitary gland for their activity. Symptoms are determined by the degree and type of hormone deficiency involved.
• Familial infantile metachromatic leukodystrophy - late infantile: An infantile form of an inherited biochemical disorder involving a deficiency of an enzyme called cerebroside sulfatase. The enzyme deficiency causes cerebroside sulfate to build up within the body and causes damage to the nervous system including the brain. The late infantile form of this disease is much more common than the juvenile or adult form.
• Familial partial epilepsy with variable focus: A familial form of epilepsy where the seizures occur mostly at night. The seizures can arise from different parts of the brain in different family members. There is no damage to the structure of the brain nor permanent neurological damage.
• Familial porencephaly: A very rare developmental abnormality that tends to run in families and is characterized by a localized accumulation of cerebrospinal fluid in the brain. The severity of symptoms is determined by the size and location of the brain abnormality.
• Fara-Chlupackova syndrome: A rare syndrome characterized mainly by ear, face and neck abnormalities.
• Farber's disease: A rare inherited biochemical disorder involving the deficiency of an enzyme called ceramidase resulting in the harmful accumulation of certain chemicals in the body which causes damage and inflammation.
• Fasciculations: A small localized involuntary muscular contractions
• Fatal familial insomnia: A very rare inherited brain disease that severely affects sleep and causes progressive deterioration of mental and movement functions.
• Febrile Seizures: Fever-caused seizures in infants or children.
• Feigenbaum-Bergeron-Richardson syndrome: A rare syndrome characterized mainly by deafness, diabetes, epilepsy, kidney disease and premature hardening of the arteries.
• Feline spongiform encephalopathy: A prion disease believed to affect felines in a similar fashion to bovine spongiform encephalitis
• Female carrier ALD: Mild form of ALD in female carriers
• Femoral facial syndrome: A rare genetic disorder characterized by underdeveloped femur, short nose and cleft palate.
• Fentanyl toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Fetal akinesia syndrome, X-linked: A rare syndrome where the fetus is unable to move or has reduced mobility due to brain defects.
• Fetal brain disruption sequence: A very rare syndrome characterized by skull and brain abnormalities.
• Fetal warfarin syndrome: A rare disorder caused by fetal exposure to warfarin (anticoagulant) and resulting in physical, neurological and mental abnormalities.
• Fetal-onset olivopontocerebellar hypoplasia: A rare inherited condition where the brainstem and part of the brain (cerebellum) is abnormally small.
• Fetterbush poisoning: Fetterbush is an evergreen shrub which bears elongated spikes of small, urn-shaped flowers. The plant is found mainly in the US. The leaves and flower nectar contain andromedotoxin which is very poisonous if eaten. Severe poisoning can result in death.
• Fibrocartilaginous embolism: A rare disorder where some of the material from a vertebral disc enters the blood supply to the spinal cord where it causes an obstruction. Symptoms are determined by where the obstruction occurs. The obstruction causes damage to part of the spinal cord resulting in neurological symptoms which can result in death depending on the size and location of the obstruction.
• Fibromyalgia: A difficult to diagnose condition affecting the muscles and/or joints
• Filefish poisoning (Palytoxin): Palytoxin is a marine toxin found in some filefish from the Philippines and Singapore region. The toxin is extremely potent and death is common in patients who ingest contaminated filefish.
• Finger conditions: Conditions that affect the fingers
• Finger osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the finger joints as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Finger spasm: A sudden involuntary contraction of the muscles of the finger or fingers.
• Finger symptoms: Symptoms affecting any fingers
• Fire Ant bite: The fire ant is found mainly in South America and parts of North America but is also found in other countries such as Australia. The fire ant is red and can deliver a venomous bite. Fire ant venom can elicit and allergic reaction or even anaphylaxis in susceptible people.
• Fire cherry poisoning: Fire cherry is a tree found mainly in the US. Ti bears round clusters of flowers and fruit with a large pit. The wilted leaves, stems and seeds contain cyanogenic glycoside and amygdalin which can be very poisonous if eaten. Severe cases of poisoning can result in death.
• Fischer Syndrome: A rare condition characterized by unusual facial appearance, thickened skin on palms and soles, physical and mental delay and various other anomalies.
• Fitzsimmons-McLachlan-Gilbert syndrome: A very rare syndrome characterized mainly by mental retardation paraplegia and thickened coarse skin on palms and soles.
• Flax poisoning: Flax is slender-stemmed herb which bears blue flowers and capsulated fruit containing smooth brown seeds. The plant originated in Europe but is found in many parts of the world growing wild. The plant contains a chemical called linomarin (a cyanogenic glycoside) which can cause symptoms if eaten in large quantities. Skin irritation can also result from skin exposure.
• Florida leucothoe poisoning: The Florida leucothoe is a shrubby plant often grown in gardens. The leaves contain andromedotoxin which can cause serious symptoms if eaten. The plant is considered very poisonous and can result in death if sufficient quantities of leaves are consumed.
• Flu-like symptoms: Symptoms similar to flu including fever
• Flynn-Aird syndrome: A rare inherited disorder where neurological degeneration causes symptoms such as dementia, ataxia, eye problems, skin disorders and muscle wasting.
• Focal cortical dysplasia: Abnormal development of the brain cortex which results in focal epilepsy and progressive neurological deterioration once the epilepsy starts in early childhood.
• Focal cortical dysplasia type II: Abnormal development of the brain cortex which results in severe, untreatable seizures which occur several times a day.
• Focal cortical dysplasia type IIA: Abnormal development of the brain cortex which results in severe, untreatable seizures which occur several times a day. Type IIA is distinguished by the lack of balloon cells wheras type IIB has balloon cells present. Balloon cells are abnormal cells in the brain tissue.
• Focal cortical dysplasia type IIB: Abnormal development of the brain cortex which results in severe, untreatable seizures which occur several times a day. Type IIB is distinguished by the presence of balloon cells wheras type IIA has no balloon cells present. Balloon cells are abnormal cells in the brain tissue.
• Focal seizure: A focal seizure is an electrical disturbance that originates in only one part of the brain and resulting in symptoms related to the body functions or parts that are controlled by that part of the brain. During a focal seizure, movement, sensations, feelings or emotions may be affected. Focal seizures may spread to other parts of the brain and are then called generalized focal seizures. Focal seizures where the patient stays conscious are called simple focal seizures. If the patient loses consciousness then the seizure is called a complex focal seizure. Epilepsy is usually a focal seizure.
• Folinic acid-responsive seizures: A form of seizures that respond to treatment with folinic acid. The seizures usually start within a week of birth.
• Food Additive Adverse reaction - MSG: An intolerance to MSG is an adverse reaction (not an immune response) by the body to a food additive called MSG which is used in a number of foods. The adverse reaction results from the body's inability to metabolize or deal with the food additive. The amount of the substance required to trigger the onset of symptoms and the nature and severity of symptoms may vary considerably between patients.
• Food Additive Adverse reaction - food additives: An intolerance to food additives is an adverse reaction (not an immune response) by the body to food additives. The adverse reaction results from the body's inability to metabolize or deal with the food additive. The amount of the substance required to trigger the onset of symptoms and the nature and severity of symptoms may vary considerably between patients.
• Food Additive Adverse reaction - salicylate: An intolerance to salicylates is an adverse reaction (not an immune response) by the body to salicylates which is an ingredient in aspirin but is also found naturally in various fruit, vegetables, herbs and spices. The adverse reaction results from the body's inability to metabolize or deal with the salicylate. The amount of the substance required to trigger the onset of symptoms and the nature and severity of symptoms may vary considerably between patients.
• Food Additive Adverse reaction - sulfite: An intolerance to sulfites is an adverse reaction (not an immune response) by the body to sulfites which is often used as a preservative in a variety of foods and medications including meats, salads and dried fruits. The adverse reaction results from the body's inability to metabolize or deal with the sulfite. The amount of the substance required to trigger the onset of symptoms and the nature and severity of symptoms may vary considerably between patients.
• Foot Spasm: A sudden involuntary contraction of the muscles of the foot.
• Foot conditions: Any condition that may affect the foot
• Foramina parietalia permagna: A rare disorder involving abnormal bone development of the skull resulting in persistent wide fontanelles (cranium bifidum) as well as a scalp defect and other abnormalities.
• Forearm muscle strain: Damage to the forearm muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Forestier's disease: A rare disorder involving by bony growths that can occur various parts of the skeleton.
• Fowl Paralysis: A viral disease that affects poultry - it is very contagious and is a herpes virus. The virus tends to affect the nerves and cause tumors in internal organs. Poultry may be unable to lay eggs or may even die. Young birds are more susceptible than older birds with death most common between the ages of 8 and 20 weeks. The virus may attack the nervous system and result in paralysis or it may attack the visceral system and cause tumors in the internal organs. Some birds may die without any obvious symptoms.
• Fowl paralyses: A viral disease that affects poultry - it is very contagious and is a herpes virus. The virus tends to affect the nerves and cause tumors in internal organs. Poultry may be unable to lay eggs or may even die. Young birds are more susceptible than older birds with death most common between the ages of 8 and 20 weeks. The virus may attack the nervous system and result in paralysis or it may attack the visceral system and cause tumors in the internal organs. Some birds may die without any obvious symptoms.
• Fractures: Breakage of bones
• Franek-Bocker-Kahlen syndrome: A rare syndrome characterized mainly by a small head, brain defect, spasticity and high sodium level.
• Frank-Ter Haar syndrome: A rare genetic bone disorder characterized by skeletal abnormalities, enlarged corneas and characteristic facial abnormalities.
• Friedreich ataxia: A progressive inherited neuromuscular disorder involving slow degeneration of the spinal cord and brain.
• Friedreich's ataxia: Progressive muscle weakness from nerve damage.
• Frontometaphyseal dysplasia: A rare genetic disorder characterized by craniofacial abnormalities, skeletal abnormalities, hearing problems and wasting of arm and leg muscles.
• Frontotemporal dementia: A degenerative brain disease involving frontal and temporal brain lobes resulting in dementia. Degeneration of the frontal lobe causes behavioral and personality changes degeneration of the temporal lobe causes semantic dementia.
• Frozen shoulder: disorder in which the shoulder capsule, the connective tissue surrounding the glenohumeral joint of the shoulder, becomes inflamed and stiff, and grows together with abnormal bands of tissue, called adhesions, greatly restricting motion and causing chronic pain.
• Fructose intolerance: An enzyme deficiency that causes toxic symptoms when fructose containing food is ingested.
• Fructose-1,6-bisphosphatase deficiency, hereditary: A rare inherited condition where an enzyme deficiency (fructose-1,6-bisphosphatase deficiency - FDPase) impairs the body's ability to metabolize fructose from the diet.
• Fryns macrocephaly: A rare syndrome characterized by a large head, seizures, spasticity, weakness and unusual facial appearance.
• Fryns-Aftimos syndrome: A rare syndrome characterized mainly by abnormal brain development, epilepsy, mental retardation and unusual facial appearance.
• Fucosidosis: A rare progressive biochemical disorder involving deficiency of an enzyme (alpha-fucosidase) which results in accumulation of certain chemicals (glycosphingolipids) in the central nervous system and other body tissues.
• Fucosidosis type 1: A rare biochemical disorder involving deficiency of an enzyme (alpha-fucosidase) which results in accumulation of certain chemicals (glycosphingolipids) in the central nervous system and other body tissues. It is an infantile form of fucosidosis which starts early and rapidly progresses to early death.
• Fucosidosis type II: A form of the biochemical disorder called fucosidosis where an enzyme deficiency (alpha-fucosidase) results in the accumulation of certain chemicals (glycosphingolipids) in the central nervous system and other body tissues. Symptoms start later and progress slower than in type I and is distinguished by warty skin growths.
• Fukuyama type muscular dystrophy: A rare inherited muscle wasting disease occurring predominantly in Japan and characterized by mental retardation and muscle weakness from infancy.
• Fumaric aciduria: A rare inborn metabolic error where a deficiency of the enzyme fumarase due to a genetic defect impairs the body's ability to break down fumarate into malate which results in increased fumaric acid levels in the urine.
• Functioning pancreatic endocrine tumor: Tumors that develop in the pancreas and cause excessive secretion of one or more pancreatic hormones such as insulin, somatostatin, glucagons, gastrin, ACTH (corticosteroids) and vasoactive intestinal peptidase.
• Fungal meningitis: Fungal meningitis is an infection that causes swelling and irritation of the tissue around the brain and spinal cord. It usually strikes people whose weakened immune systems can't fight off infection. The disease is not common. but it can be very serious.
• GEMSS syndrome: A rare syndrome characterized mainly by stiff joints, short stature, glaucoma and a dislocated eye lens.
• GM1 gangliosidosis: A rare biochemical disorder involving a deficiency of an enzyme (beta-galactosidase A) which results in the accumulation of harmful chemicals (GM1 gangliosides) in the central nervous system and other body tissues. Type 1 is a severe infantile form of the disorder and involves a greater degree of accumulation than type II or III.
• GM2-gangliosidosis, AB variant: A very rare inherited disorder where the brain and spinal cord nerve cells (central nervous system) are progressively destroyed.
• Galloway syndrome: A rare genetic disorder primarily involving physical and developmental abnormalities.
• Ganglioglioma: A type of tumor that develops in the central nervous system. The tumor originates from glial and nerve cells. The tumor may grow rapidly and symptom will vary depending on the exact location and size of the tumor.
• Gangliosidosis GM1 type 3: A rare biochemical disorder involving a deficiency of an enzyme (beta-galactosidase A) which results in the accumulation of harmful chemicals (GM1 gangliosides) in the central nervous system and other body tissues. Type III involves a lesser degree of accumulation than type II or I.
• Gangliosidosis generalized GM1, type 1: A rare biochemical disorder involving a deficiency of an enzyme (beta-galactosidase A) which results in the accumulation of harmful chemicals (GM1 gangliosides) in the central nervous system and other body tissues. Type 1 is a severe infantile form of the disorder and involves a greater degree of accumulation than type II or III.
• Gangliosidosis, generalized GM1 type 2: A rare biochemical disorder involving a deficiency of an enzyme (beta-galactosidase 1) which results in the accumulation of harmful chemicals (GM1 gangliosides) in the central nervous system and other body tissues. Type III involves a lesser degree of accumulation than type II or I. Death can occur early in life in severe cases but milder cases can survive into late childhood.
• Gangliosidosis, generalized GM1 type 3: A rare biochemical disorder involving a deficiency of an enzyme (beta-galactosidase A) which results in the accumulation of harmful chemicals (GM1 gangliosides) in the central nervous system and other body tissues. Type III involves a lesser degree of accumulation than type II or I.
• Garret-Tripp syndrome: A rare syndrome characterized mainly by extra digits, a lack of hair and scaly skin on the scalp, face and neck.
• Gaucher Disease: A rare inherited biochemical disorder characterized by the deficiency of the enzyme called glucocerebrosidase and accumulation of glycosylceramide (glucocerebroside). There are three forms of this disease: type 1, 2 and 3.
• Gaucher disease - perinatal lethal form: A rare syndrome characterized by the association of abnormally tight skin and Gaucher disease which is a lipid storage disease. This is the most severe form of Gaucher disease.
• Gaucher disease type 2: A rare inherited biochemical disorder characterized by the deficiency of the enzyme called glucocerebrosidase and accumulation of glycosylceramide (glucocerebroside). There are three forms of this disease: type 1, 2 and 3. Type 2 is acute neurological form apparent in infancy.
• Generalized Epilepsy with Febrile Seizures Plus: An inherited seizure disorder characterized by febrile seizures during early childhood and persisting seizures after early childhood which may or may not involve fever. The range and severity of symptoms is variable and may include febrile seizures, partial seizures and generalized seizures. The seizure disorder persists after the age of six which differentiates it from the similarly names seizure disorder called generalized epilepsy with febrile seizures. There are five (perhaps more) subtypes of the condition, each originating from a different genetic defect.
• Generalized Epilepsy with Febrile Seizures Plus, type 1: Generalized epilepsy with febrile seizures plus is an inherited seizure disorder characterized by febrile seizures during early childhood and persisting seizures after early childhood which may or may not involve fever. The range and severity of symptoms is variable and may include febrile seizures, partial seizures and generalized seizures. The seizure disorder persists after the age of six which differentiates it from the similarly names seizure disorder called generalized epilepsy with febrile seizures. There are five (perhaps more) subtypes of the condition, each originating from a different genetic defect. Type 1 is caused by a defect on chromosome 19q13.
• Generalized Epilepsy with Febrile Seizures Plus, type 2: Generalized epilepsy with febrile seizures plus is an inherited seizure disorder characterized by febrile seizures during early childhood and persisting seizures after early childhood which may or may not involve fever. The range and severity of symptoms is variable and may include febrile seizures, partial seizures and generalized seizures. The seizure disorder persists after the age of six which differentiates it from the similarly names seizure disorder called generalized epilepsy with febrile seizures. There are five (perhaps more) subtypes of the condition, each originating from a different genetic defect. Type 2 is caused by a defect on chromosome 2q24.
• Generalized Epilepsy with Febrile Seizures Plus, type 3: Generalized epilepsy with febrile seizures plus is an inherited seizure disorder characterized by febrile seizures during early childhood and persisting seizures after early childhood which may or may not involve fever. The range and severity of symptoms is variable and may include febrile seizures, partial seizures and generalized seizures. The seizure disorder persists after the age of six which differentiates it from the similarly names seizure disorder called generalized epilepsy with febrile seizures. There are five (perhaps more) subtypes of the condition, each originating from a different genetic defect. Type 3 is caused by a defect on chromosome 15q31.1-q33.1.
• Generalized Epilepsy with Febrile Seizures Plus, type 5: Generalized epilepsy with febrile seizures plus is an inherited seizure disorder characterized by febrile seizures during early childhood and persisting seizures after early childhood which may or may not involve fever. The range and severity of symptoms is variable and may include febrile seizures, partial seizures and generalized seizures. The seizure disorder persists after the age of six which differentiates it from the similarly names seizure disorder called generalized epilepsy with febrile seizures. There are five (perhaps more) subtypes of the condition, each originating from a different genetic defect. Type 5 is caused by a defect on the GABRD gene.
• Generalized Epilepsy with Febrile Seizures Plus, type 6: Generalized epilepsy with febrile seizures plus is an inherited seizure disorder characterized by febrile seizures during early childhood and persisting seizures after early childhood which may or may not involve fever. The range and severity of symptoms is variable and may include febrile seizures, partial seizures and generalized seizures. The seizure disorder persists after the age of six which differentiates it from the similarly names seizure disorder called generalized epilepsy with febrile seizures. There are five (perhaps more) subtypes of the condition, each originating from a different genetic defect. Type 6 is caused by a defect on chromosome 8p23-p21.
• Generalized Myokymia: Spontaneous tetanic contractions of the muscles all over the body
• Generalized lipodystrophy with mental retardation, deafness, short stature and slender bones: A recessively inherited disorder characterized by short stature, mental retardation, deafness, slender bones and degeneration of the body's fat tissue.
• Genetic reflex epilepsy: A genetic condition where certain lights (e.g. tv), sounds, music, movements and reading can trigger a seizure.
• Genée-Wiedemann syndrome: An extremely rare birth disorder characterized by mental retardation and a variety of physical defects.
• Gestational trophoblastic tumor: A rare tumor that develops in the uterus from cells formed after an abnormal conception (abnormal union of sperm and egg cell). Gestational trophoblastic tumors can also develop from a normal placenta. There are two type of gestational trophoblastic tumors: choriocarcinoma and hydatidiform mole.
• Giant axonal neuropathy: A rare genetic disorder characterized by incoordination, vision problems and dementia caused by abnormalities of a nerve cell component.
• Glioma: A rare type of tumor that occurs from glial cells that make up the central nervous system. These tumors usually occur in the brain but can also occur in the spinal cord and other nerves such as the optic nerve. Symptoms depend on the size and location of the tumor.
• Gliomatosis cerebri: A rare, aggressive type of malignant brain tumor. Cancerous glial cells infiltrate various parts of the brain and can result in a variety of symptoms.
• Gliosarcoma: A type of brain tumor that originates from glial cells. The tumor may grow rapidly and symptom will vary depending on the exact location and size of the tumor.
• Glucocorticoid deficiency, familial: A rare inherited disorder where the adrenals don't respond to ACTH resulting in glucocorticoid deficiency.
• Glucose transport defect, blood-brain barrier: A rare metabolic disorder involving a deficiency of a molecule needed to transport glucose (GLUT1). The glucose is unable to be transported from the blood and into the brain and cerebrospinal fluid. Sugar transport to the brain is essential for normal development. The blood sugar level remains normal. Fasting exacerbates symptoms which can very in severity depending on the degree of deficiency.
• Glutamate decarboxylase deficiency: A rare disorder of amino acid metabolism characterized by a deficiency of the enzyme called glutamate decarboxylase which causes seizures that will only respond to pyridoxine (vitamin B6).
• Glutaric aciduria 1: A rare inherited metabolic disorder where a genetic mutation results in the deficiency of an enzyme called glutaryl-CoA dehydrogenase which is required to metabolise certain amino acids (lysine, hydroxylysine and tryptophan). Problems occur when these metabolites build up in the body and cause neurological problems. Symptoms often develop following an acute infection or fasting. The severity of the condition is highly variable from development of neurological symptoms during infancy to asymptomatic adults. The degree of enzyme deficiency will usually determine the severity.
• Glutaricaciduria type 1: A rare inherited metabolic disorder where a genetic mutation results in the deficiency of an enzyme called glutaryl-CoA dehydrogenase which is required to metabolise certain amino acids (lysine, hydroxylysine and tryptophan). Problems occur when these metabolites build up in the body and cause neurological problems. Symptoms often develop following an acute infection or fasting. The severity of the condition is highly variable from development of neurological symptoms during infancy to asymptomatic adults. The degree of enzyme deficiency will usually determine the severity.
• Glutaryl-CoA dehydrogenase deficiency: A rare inherited metabolic disorder where a genetic mutation results in the deficiency of an enzyme called glutaryl-CoA dehydrogenase which is required to metabolise certain amino acids (lysine, hydroxylysine and tryptophan). Problems occur when these metabolites build up in the body and cause neurological problems. Symptoms often develop following an acute infection or fasting. The severity of the condition is highly variable from development of neurological symptoms during infancy to asymptomatic adults. The degree of enzyme deficiency will usually determine the severity.
• Glutathione synthetase deficiency, severe: An inborn error of metabolism where insufficient glutathione is produced. Glutathione is an antioxidant which helps destroy unstable molecules that can cause damage to cells and helps develop certain cell components. The condition is due to insufficient glutathione synthetase enzyme. The condition may range from mild, resulting in excessive destruction of red blood cells, to severe which includes neurological symptoms.
• Gluteal muscle strain: Damage to the gluteal muscle (buttocks) due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Glycine encephalopathy, atypical mild form: A rare disorder of amino acid metabolism where glycine are unable to be metabolized properly due to defects in the glycine cleavage system. The atypical mild form tends to be quite mild and can be difficult to diagnose due to the nonspecific symptoms.
• Glycine encephalopathy, classical neonatal early-onset form: A rare disorder of amino acid metabolism where glycine are unable to be metabolized properly due to defects in the glycine cleavage system. The early onset classical neonatal form usually starts after a period of normal development during the first 6 months of life.
• Glycine encephalopathy, classical neonatal form: A rare disorder of amino acid metabolism where glycine are unable to be metabolized properly due to defects in the glycine cleavage system.
• Glycine synthase deficiency: A rare genetic disorder characterized by high blood glycine levels which is toxic to the body. The severity of the condition varies according to the degree of deficiency and age of onset. The classical neonatal form is generally quite severe, the atypical mild form which generally includes symptoms such as aggressiveness, behavioral problems and speech problems. The transient neonatal form involves high blood glycine levels at birth which then returns to normal within a couple of months - there was no neurological or developmental impairment.
• Glycogen Storage Disease Type I: An inherited metabolic disorder where a deficiency of the enzyme glucose-6-phosphatase prevents glycogen being turned into glucose leading to a buildup of glycogen in the liver and kidneys. Most problems tend to develop during adulthood.
• Glycogen storage disease type 1C: A genetic metabolic disorder involving a deficiency of the enzyme glucose-6-phosphatase (due to a defect in the microsomal phosphate) which results in the accumulation of glycogen in various tissues. G6P is stored as glycogen until the body needs to convert it to a sugar for energy. The enzyme deficiency prevents the conversion and hence low blood sugar levels result.
• Glycogen storage disease type 1D: A genetic metabolic disorder involving a deficiency of the enzyme glucose-6-phosphatase (due to a defect in the microsomal glucose transporter) which results in the accumulation of glycogen in various tissues. G6P is stored as glycogen until the body needs to convert it to a sugar for energy. The enzyme deficiency prevents the conversion and hence low blood sugar levels result.
• Glycosylphosphatidylinositol deficiency: A genetic disorder where the deficiency of a glycolipid called glycosylphosphatidylinositol causes seizures blood problems.
• Goldberg syndrome: A rare lysosomal storage disorder characterized by an enzyme deficiency (neuraminidase and beta-galactosidase) which results in a build-up of glycoproteins in the urine. There are three main subtypes: infantile, juvenile and adult forms. The early infantile form is the most severe and often results in death during infancy.
• Golden Chain tree poisoning: The Golden Chain tree is a relatively small tree which produces bright yellow flowers. The plant contains a chemical called cytisine which can cause similar effects to nicotine if ingested and can be serious if patients have underlying health problems. All parts of the plant are poisonous if sufficient quantities are consumed.
• Gomez and Lopez-Hernandez syndrome: A rare genetic condition characterized by various abnormalities such as mental deficiency, small head, short stature, eye problems and movement problems.
• Gout: Painful joints, most commonly the big toe.
• Grand mal seizures: A condition which is characterized by the sudden onset of generalized muscle spasms and loss of consciousness
• Grand-Kaine-Fulling syndrome: A very rare syndrome characterized by disease of the retinal blood vessels and degeneration of the central nervous system.
• Granulomatous Angiitis of the Central Nervous System: Inflammation of blood vessels in the central nervous system (brain and spinal cord). The condition tends to recur.
• Granulomatous amebic encephalitis: Brain/CNS infection from Acanthamoeba bacteria
• Griscelli disease: A rare genetic disorder characterized mainly by albinism (lack of pigmentation). There are three different subtypes of the disorder (I, II and III) each with varying additional features such as immunodeficiency and neurological symptoms. Type 1 involves partial albinism and neurological symptoms, type II involves partial albinism, immunodeficiency and sometimes neurological symptoms and type III involves albinism, only.
• Griscelli syndrome type II: A rare genetic condition characterized by a partial lack of pigmentation in the eye, skin and hair, clumps of pigmentation in hair shafts, immunodeficiency and neurological symptoms.
• Grix-Blankenship-Peterson syndrome: A very rare syndrome characterized mainly by mental retardation, bone defects and head and face abnormalities.
• Groin muscle strain: Damage to the groin muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Groin spasm: A sudden involuntary contraction of the muscles of the groin.
• Gräsbeck-Imerslund disease: A rare genetic blood disorder where a defect in the vitamin B12 receptor means that it can't be absorbed from food during digestion. As a result of the low vitamin B12 levels, the body produces increased numbers of abnormal enlarged red blood cells (megaloblasts).
• Guam disease: A nerve degeneration disorder that occurs particularly in Guam and involves progressive dementia and parkinsonism which ultimately leads to death.
• Guanidinoacetate methyltransferase deficiency: A rare disorder of amino acid metabolism where glycine and proline are unable to be metabolized properly due to deficiency of the enzyme called guanidinoacetate methyltransferase.
• Guillain-Barre syndrome: An acute condition which is characterized by polyradiculoneuropathy that affects the peripheral nervous system
• Gurrieri-Sammito-Bellussi syndrome: A rare syndrome characterized by epilepsy, short stature and skeletal abnormalities.
• Gustavson syndrome: A very rare condition characterized by features such as mental retardation, spasticity, seizures and eye and ear problems.
• HARD syndrome: A rare genetic disorder characterized by a smooth brain surface and eye, genitourinary and other abnormalities.
• HARD syndrome (Hydrocephalus - agyria - retinal dysplasia): A rare genetic disorder characterized by a smooth brain surface and eye, genitourinary and other abnormalities.
• HELLP syndrome: A rare potentially fatal condition that occurs in pregnant women and is frequently associated with pre-eclampsia.
• HERNS syndrome: A rare inherited syndrome characterized by blood vessel disease which causes eye and kidney disease and strokes. Neurological manifestations tend to occur around the 2nd and 3rd decade of life due to the blood vessels in the brain being affected.
• HHV-6 encephalitis: A rare condition that usually occurs in immunocompromised people such as those undergoing transplants or HIV patients. The condition causes neurological symptoms.
• HIV-1, CRF01_AE: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF A/E occurs mainly in Asia and originated in central Africa. It tends to be transmitted mainly through heterosexual contact i.e. infection occurs through mucosal exposure.
• HIV-1, CRF02_AG: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/G involves both And G subtypes. HIV-1, Group M, subtype CRF A/G occurs mainly in west and central Africas well as Taiwan.
• HIV-1, CRF04_ cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/B involves both And B subtypes. HIV-1, Group M, subtype CRF_cpx is made up of a combination of subtypes A, G, H, K, and U - (cpx refers to a complex of two or more subtypes). This subtype has been diagnosed in Cyprus and Greece.
• HIV-1, CRF05_ D/F: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF D/F involves both D and F subtypes. HIV-1, Group M, subtype CRF D/F occurs mainly in the Democratic Republic of Congo.
• HIV-1, CRF06_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF06_cpx involves a combination of subtypes A, G, J and K - (cpx refers to a complex of two or more subtypes). This subtype has been diagnosed in Burkina Faso and Mali.
• HIV-1, CRF07_BC: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF07_BC involves a combination of type B' and C and is extremely rare.
• HIV-1, CRF08_BC: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF08_BC involves a combination of type B' and C and is extremely rare.
• HIV-1, CRF11_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF11_cpx is extremely rare and appears to include a mix of subtypes CRF01 (And E), A, G and J - (cpx refers to a complex of two or more subtypes).
• HIV-1, CRF12_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF B/F has been diagnosed in Uruguay and Argentina.
• HIV-1, CRF13_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF13_cpx involves a combination of subtypes CRF01 (And E), A, G, J and U - (cpx refers to a complex of two or more subtypes).
• HIV-1, CRF14_BG: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF14_BG involves a combination of subtypes B and G. This subtype has been diagnosed in Spain.
• HIV-1, CRF15_01B: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF15_01B involves a combination of subtypes CRF01 (And E) and B.
• HIV-1, CRF16_ A2D: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF16_ A2D involves a combination of subtypes A2 and D. This subtype has been diagnosed in Kenyand South Korea.
• HIV-1, CRF17_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF17_BF involves a combination of subtypes B and F.
• HIV-1, CRF18_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF18_cpx involves a combination of subtypes A, E, F, G, H, K and U - (cpx refers to a complex of two or more subtypes).
• HIV-1, CRF19_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF19_cpx involves a combination of subtypes A, E, D and G - (cpx refers to a complex of two or more subtypes).
• HIV-1, CRF20_BG: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF20_BG involves a combination of subtypes B and G. This subtype has been diagnosed in Cuba.
• HIV-1, CRF21_A2D: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF21_A2D involves a combination of subtypes A, D and G.
• HIV-1, CRF22_01A1: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF22_01A1 involves a combination of subtypes CRF01 (And E) and A1.
• HIV-1, CRF23_BG: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF23_BG involves a combination of subtypes B and G.
• HIV-1, CRF24_BG: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF24_BG involves a combination of subtypes B and G. This subtype has been diagnosed in Cuba.
• HIV-1, CRF25_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF25_cpx involves a combination of subtypes A, G and U - (cpx refers to a complex of two or more subtypes). This subtype has been diagnosed in Cameroon and Saudi Arabia.
• HIV-1, CRF26_AU: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF26_AU involves a combination of subtypes And U.
• HIV-1, CRF27_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF27_cpx involves a combination of subtypes A, E, G, H, J, K and U - (cpx refers to a complex of two or more subtypes). This subtype has been diagnosed in the Democratic Republic of Congo.
• HIV-1, CRF28_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF28_BF involves a combination of subtypes B and F.
• HIV-1, CRF29_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF29_BF involves a combination of subtypes B and F.
• HIV-1, CRF30_0206: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF30_0206 involves a combination of subtypes CRF02 (And G) and CRF06 (A, G, J and K).
• HIV-1, CRF31_BC: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF31_BC involves a combination of subtypes B and C.
• HIV-1, CRF32_06A1: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF32_06A1involves a combination of subtypes CRF06 (A, G, J, K) and A1.
• HIV-1, CRF33_01B: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF33_01B involves a combination of subtypes CRF01 (And E) and B. This subtype has been diagnosed in Malaysia.
• HIV-1, CRF34_01B: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF34_01B involves a combination of subtypes CRF01 (And E) and B. This subtype has been diagnosed in Thailand.
• HIV-1, CRF35_AD: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF35_AD involves a combination of subtypes And D. This subtype has been diagnosed in Afghanistan.
• HIV-1, CRF36_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF36_cpx involves a combination of subtypes CRF01 (And E), CRF02 (And G) and G - (cpx refers to a complex of two or more subtypes). This subtype has been diagnosed in Cameroon.
• HIV-1, CRF37_cpx: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF37_cpx involves a combination of subtypes CRF01 (And E), CRF02 (And G) and U - (cpx refers to a complex of two or more subtypes). This subtype has been diagnosed in Cameroon.
• HIV-1, CRF38_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF38_BF involves a combination of subtypes B and F.
• HIV-1, CRF39_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF39_BF involves a combination of subtypes B and F. This subtype has been diagnosed in Brazil.
• HIV-1, CRF40_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF40_BF involves a combination of subtypes B and F. This subtype has been diagnosed in Brazil.
• HIV-1, CRF41_CD: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF41_CD involves a combination of subtypes C and D.
• HIV-1, CRF42_BF: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF42_BF involves a combination of subtypes B and F1.
• HIV-1, CRF43_02G: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype CRF43_02G involves a combination of subtypes CRF02 (And G) and G. This type has been diagnosed in Saudi Arabia.
• HIV-1A: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype A is most prevalent in West Africa.
• HIV-1A1: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. HIV-1A1 is a subtype of HIV-1A.
• HIV-1A2: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. HIV-1A2 is a subtype of HIV-1A.
• HIV-1A3: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. HIV-1A3 is a subtype of HIV-1A.
• HIV-1B: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype B is most prevalent in Thailand, Australia, Japan, Europe and America. This subtype tends to be transmitted mainly by homosexual contact and intravenous drug use i.e. infection occurs mainly through blood exposure.
• HIV-1C: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype C is most prevalent in Nepal, India and Southern and Eastern parts of Africa. This subtype tends to be a more virulent subtype and is transmitted mainly through heterosexual contact i.e. infection occurs through mucosal exposure.
• HIV-1D: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype D is most prevalent in the Eastern and Central parts of Africa and tends to be a more virulent subtype.
• HIV-1E: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype E has to date not occurred on its own but has occurred in combination with subtype A in a subtype called CRF A/E. This subtype occurs mainly in Asia and originated in central Africa. It tends to be transmitted mainly through heterosexual contact i.e. infection occurs through mucosal exposure.
• HIV-1F: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype F is most prevalent in Eastern Europe, South America and Central Africa.
• HIV-1F1: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. HIV-1F1 is a subtype of HIV-1F.
• HIV-1F2: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. HIV-1F2 is a subtype of HIV-1F.
• HIV-1G: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype G is most prevalent in Africa and central parts of Europe. This subtype tends to be a more virulent subtype.
• HIV-1H: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype H is most prevalent in central parts of Africa.
• HIV-1J: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype J is most prevalent in central America.
• HIV-1K: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group M, subtype K is most prevalent in the Democratic Republic of Congo and Cameroon.
• HIV-1M: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. HIV-1 group M is the most common form of HIV accounting for roughly 90% of cases worldwide.
• HIV-1N: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group N is very rare and has only been diagnosed in Cameroon.
• HIV-1O: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-1, Group O is very rare and has only been diagnosed in the western parts of Central Africa. This type is more difficult to diagnose and the standard test kits are not sensitive enough to pick up the virus.
• HIV-2: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. Group M is further classified into 9 subgroups - A to K and CRFs. CRF's are circulating recombinant forms which are a combination of any two subtypes e.g. CRF A/C involves both And C subtypes. HIV-2 is very rare and is generally only diagnosed in Africa but a number of cases have been diagnosed in the US. HIV-2 is less easily transmitted than HIV-1 and the time between infection and symptoms tends to be longer in HIV-2.
• HIV-2A: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. HIV-2 has two subtypes - And B and they are found mainly in Western Africa.
• HIV-2B: HIV is an immune system disease caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Once a person has been diagnosed with AIDS, even if treatment improved their CD4+ T cell count and infections are under control, the person is still considered to have AIDS. HIV is classified into two subtypes - HIV-1 and HIV-2. HIV-1 is further classified into three groups - Group M, N and O. HIV-2 has two subtypes - And B and they are found mainly in Western Africa.
• HIV/AIDS: HIV is a sexually transmitted virus and AIDS is the progressive immune failure that HIV causes.
• Haas-Robinson syndrome: A rare, recessively inherited disorder involving defective copper metabolism within the body which causes symptoms such as mental retardation, seizures and poor muscle tone.
• Hall-Riggs mental retardation syndrome: A rare inherited disorder characterized by mental retardation, distinctive facial features and various bone abnormalities.
• Hallervorden-Spatz disease: Nerve disorder causing movement problems.
• Hand Spasm: Violent and painful contraction of the muscles in the hands.
• Hand muscle strain: Damage to the hand muscles due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Harding ataxia: A rare neurological disorder primarily involving poor balance and coordination while tendon reflexes are not affected.
• Hashimoto's encephalitis: A rare form of brain disease and inflammation.
• Hashimoto's thyroiditis: A progressive disease of the thyroid which leads to degeneration and hypothyroidism
• Haspeslagh Fryns Muelenaere syndrome: A very rare syndrome characterized mainly by short stature, underdeveloped genitals and various skull and facial anomalies.
• Head injury: Any injury that occurs to the head
• Heat exhaustion: major cause of preventable morbidity worldwide
• Heat stroke: it is a life threatening condition. It is hyperthermia in an advanced state
• Heberden's nodes: Small hard nodules that form at the interphalangeal joints due to osteoarthritis
• Hemangioblastoma: A benign tumor that tends to occur in the central nervous system such as the brain and spinal cord. The tumor arises from the stem cells that develop into blood vessels or blood cells (hemangioblasts). Symptoms vary depending on the exact location and size of the tumor.
• Hemimegalencephaly: A very rare disorder where one side of the brain is bigger than the other.
• Hemiplegic migraine, familial type 2: A rare inherited form of migraine that characteristically causes temporary paralysis on one side of the body and involves the presence of an aura. A migraine episode may be triggered by minimal trauma to the head. The severity of the disorder is variable with some patients experiencing problems for days. Triggers include tiredness, heat, stress and head injury.
• Hemolytic uremic syndrome: A rare condition characterized by acute kidney failure, hemolytic anemia and thrombocytopenia (reduced blood platelet count). The condition is often caused by upper respiratory infections or infectious diarrhea.
• Hemophilic arthropathy: Joint destruction associated with hemophilia. The knees, ankles, elbows, hip and shoulders are the most common joints involved. Symptoms are progressive and often surgical intervention is required to prevent total loss of joint function.
• Hemophilus influenzae B: Bacterial respiratory infection with dangerous complications.
• Hemorrhagic shock and encephalopathy syndrome: A very rare severe condition characterized by sudden severe shock, brain disease and liver and kidney dysfunction which occurs in infants. The cause is unknown.
• Hendra Virus: A paramyxoviridae virus that is transmitted from animals to humans from body fluids and excretions
• Herbal Agent adverse reaction - Ginkgo biloba: Ginkgo biloba can be used as a herbal agent to treat conditions such as tinnitus, brain trauma, vertigo, blood vessel diseases and any other problems which benefit from the blood vessel dilating action of the herbal agent. Ginkgo biloba can cause adverse reactions in some people.
• Herbal Agent adverse reaction - Licorice: Licorice can be used as a herbal agent in cough medications and as a food additive in chewing gum and chewing tobacco. The herbal agent contains a chemical called glycyrrhizic acid which can cause an adverse reaction in some people.
• Herbal Agent adverse reaction - Margosa oil: Margosa oil can be used as a herbal agent to treat parasitic infestations. The herbal agent contains various chemicals which can cause an adverse reaction in some people.
• Herbal Agent adverse reaction - Pennyroyal Oil: Pennyroyal Oil can be used as a herbal agent to treat delayed menstruation and as an insect repellent. The herbal agent can cause an adverse reaction in some people.
• Herbal Agent adverse reaction - Rue: Rue can be used to induce abortion, as a topical insect repellant or to treat spasms and delayed menstruation. The herbal agent contains chemicals (alkaloids, arborine, arborinine) which can cause an adverse reaction in some people.
• Herbal Agent overdose - Black Cohosh: Black Cohosh can be used as a herbal agent used to improve menopausal symptoms and menstrual pain. The herbal agent contains a chemical called triterpene glycoside and the ingestion of excessive amounts of it can result in symptoms. The main symptoms are slowed heart rate and low blood pressure.
• Herbal Agent overdose - Golden Seal: Golden seal can be used as a herbal agent to treat a variety of conditions - bleeding after birth, mucosal inflammation, constipation, hemorrhoids. The herbal agent contains chemicals (alkaloid hydrastine, berberine) which can cause various symptoms if excessive quantities are taken.
• Herbal Agent overdose - Horse Chestnuts: Horse Chestnuts can be used as a herbal agent to treat varicose veins, improve blood circulation through veins and to prevent fluid buildup following operations. The herbal agent contains a chemical called aesculin which can cause various symptoms if excessive quantities are taken. As little as one seed can cause symptoms such as headache and vomiting in some people.
• Herbal Agent overdose - Lobelia: Lobelia can be used as a herbal agent to treat respiratory congestion, muscle spasms and to assist in quitting smoking. The herbal agent contains a certain chemicals which can imitate the effects of nicotine but which can cause various symptoms if excessive quantities are taken.
• Herbal Agent overdose - Peppermint Oil: Peppermint Oil can be used as an antispasmodic (to treat nausea, dyspepsia and irritable bowel syndrome) and as an antibacterial. The herbal agent contains various chemicals (menthol, menthone, methyl acetate) which can cause symptoms if excessive quantities are taken.
• Herbal Agent overdose - Rhubarb: Rhubarb can be used as a herbal agent to treat constipation. Excessive intake of rhubarb can result in overdose symptoms.
• Herbal Agent overdose - Sabah vegetable: Sabah vegetable can be used as a herbal agent to treat obesity and prevent vision problems. The herbal agent contains a chemical (papvarine alkaloids) which can cause an adverse reaction in some people.
• Hereditary Spastic Paraplegia: A slow-progressing degeneration of the tract that connects the brain to the spinal cord (corticospinal tract) resulting in muscle spasticity, weakness and paralysis. The severity of symptoms is determined by the nature and extent of the damage.
• Hereditary nodular heterotopia: A rare inherited disorder where a part of the brain tissue is misplaced during development. More specifically, nodules of brain tissue is in various parts of the brain.
• Hereditary peripheral nervous disorder: A group of inherited disorders affecting the peripheral nerves (nerves other than the brain and spinal cord). The motor, sensory and/or autonomic nerves may be affected. Examples of such conditions includes Dejerine-Sottas disease and Charcot-Marie-Tooth disease.
• Hereditary sensory and autonomic neuropathy 3: A very rare inherited disorder affecting the peripheral and autonomic nervous system and characterized by reduced tear production, excessive sweating, poor body temperature control, blood pressure problems, impaired sensation and poor muscle control.
• Hereditary spastic paralysis, infantile onset ascending: A rare inherited progressive condition where the muscles of the arms, legs and face become increasingly weak and stiff due to damage to nerve cells that control muscle movement. The legs are affected first and then the arms and face - the symptoms ascend up the body. This condition involves mutations in the same gene and overlapping symptoms with juvenile primary lateral sclerosis but the difference is that primary lateral sclerosis only involves degeneration of the upper motor neurons whereas infantile-onset spastic paralysis is more severe and involves degeneration of upper and lower motor neurons.
• Heroin overdose: Heroin is an illegal and highly addictive recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Herpes, Neonatal: Neonatal herpes is the infection of a newborn with the herpes virus within the first six weeks of life. The virus may be transmitted from the mother to the baby while it is still in the uterus or during delivery. The risk of transmitting the virus is highest if genital herpes is contracted during the late stages of the pregnancy. A mother with long standing or recurring herpes infection usually has sufficient antibodies to the virus to prevent the infant becoming infected. Neonatal herpes can also be contracted when an infant comes into contact with an infected person e.g. being kissed by and adult with cold sores. A cesarean birth may be advised for mothers who have active genital lesions.
• Herpes, Neonatal - Central Nervous System Infection: Central nervous system herpes infection in neonates is a herpes infection of the central nervous system (brain, spinal cord) that develops in infants within the first six weeks of life. The virus may be transmitted from the mother to the baby while it is still in the uterus or during delivery. The risk of transmitting the virus is highest if genital herpes is contracted during the late stages of the pregnancy. A mother with long standing or recurring herpes infection usually has sufficient antibodies to the virus to prevent the infant becoming infected. Neonatal herpes can also be contracted when an infant comes into contact with an infected person e.g. being kissed by and adult with cold sores. A cesarean birth may be advised for mothers who have active genital lesions. Central nervous system infection will occur in nearly three quarters of infants with a herpes infection.
• Herpes, Neonatal - Disseminated: Disseminated neonatal herpes is a widespread infection of a newborn with the herpes virus within the first six weeks of life. The virus may be transmitted from the mother to the baby while it is still in the uterus or during delivery. The risk of transmitting the virus is highest if genital herpes is contracted during the late stages of the pregnancy. A mother with long standing or recurring herpes infection usually has sufficient antibodies to the virus to prevent the infant becoming infected. Neonatal herpes can also be contracted when an infant comes into contact with an infected person e.g. being kissed by and adult with cold sores. A cesarean birth may be advised for mothers who have active genital lesions. Brain infection will occur in over half of infants with the disseminated form.
• Herring poisoning (clupeotoxin): Some herrings contain toxins (Clupeotoxin) which can be poisonous to humans if eaten. Heat does not destroy the toxin and there is still uncertainty as to the origin of the toxin. The toxin appears to be present in higher concentrations in summer and is believed to be possible linked to the consumption of toxic food in its food web. The size and age of the herring does not appear to be related to the toxicity. The herrings are found in coastal waters off Africa and the Caribbean, Indian and Pacific Oceans.
• Herrmann Opitz arthrogryposis syndrome: A very rare syndrome characterized mainly by contractures, skeletal abnormalities and short stature.
• Heterotopia, periventricular, associated with chromosome 5p anomalies: A rare developmental brain abnormality. Type 3 is caused by a defect on chromosome 5p.
• Heterotopia, periventricular, autosomal recessive: A rare, recessively inherited developmental brain abnormality. Type 2 is caused by a defect on chromosome 20q13.13.
• High T4 syndrome: A disorder involving transient increases in thyroxine levels for no apparent reason.
• High altitude cerebral edema: Brain condition related to high altitude.
• High sodium: High blood sodium levels (hypernatremia)
• Hip Flexor strain: Damage to the hip flexor muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Hip cancer: The presence of tumour growth in the bone of the hip, whether due to primary malignancies e.g. leukaemic or myeloma infiltration of the bone marrow, or due to secondary metastases from another site e.g. lung or breast; cancer affecting bone of hip likely to affect other bones e.g. vertebra, ribs
• Hip muscle strain: Damage to the hip muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Hip osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the hip joint as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Hip sprain: Damage to ligaments in the hip.
• Hirschsprung disease ganglioneuroblastoma: A rare disorder characterized by an intestinal defect tumors of the nerves.
• Histidinuria, renal tubular defect: A very rare syndrome where a kidney defect causes high levels of histidine in the urine.
• Hodgkin's Disease: A form of cancer that affects the lymphatic system.
• Hodgkin's disease, adult: A type of cancer that affects the lymphatic system in adults. The lymphatic system forms part of the body's immune system. This type of cancer can also occur in children.
• Hodgkin's disease, childhood: A type of cancer that affects the lymphatic system in children. The lymphatic system forms part of the body's immune system. This type of cancer can also occur in children.
• Hoigné syndrome: Embolism (blood vessel blockage) and neurological problems associated with a procaine penicillin injection into the muscle. The condition is believed to be caused by some of the drug getting into the blood stream.
• Holocarboxylase synthetase deficiency: An inherited disorder where the enzymes that use the vitamin biotin are defective.
• Holoprosencephaly: A rare disorder where abnormalities of the fetal forebrain development lead to various birth defects.
• Holoprosencephaly deletion 2p: A very rare syndrome characterized mainly by the failure of the brain to separate into two lobes, facial deformities and various other anomalies.
• Homen syndrome: Lesion on a part of the brain called the lenticular nucleus which is involved in movement.
• Homocystinuria: A rare inherited metabolic disorder involving the amino acid methionine and resulting in a harmful accumulation of homocysteine in the body.
• Homocystinuria due to cystathionine beta-synthase deficiency: A rare genetic biochemical disorder where a deficiency of cystathionine beta-synthase results in high levels of methionine and homocysteine in the blood and reduced levels of cyteine in the blood. There are two subtypes of the disorder with varying manifestations. One type responds to Vitmain B6 supplementation and the other doesn't. Those who do respond to Vitamin B6 tend to have milder manifestations.
• Homocystinuria due to defect in methylation (cbl g): An inherited organic acid disorder where an enzyme deficiency (methionine synthase) impairs the body's ability to break down certain proteins consumed in the diet. This results in a buildup of methylmalonic acid and homocystine which results in harmful affects. It is a form of vitamin B12 deficiency.
• Homocystinuria due to defect in methylation cbl e: An inherited organic acid disorder where an enzyme deficiency (methionine synthase reductase) impairs the body's ability to break down certain proteins consumed in the diet. This results in a buildup of methylmalonic acid and homocystine which results in harmful affects. It is a form of vitamin B12 deficiency.
• Homocystinuria syndrome: A rare genetic connective tissue disorder caused by an enzyme deficiency and characterized by dislocation of eye lens, malar flush and osteoporosis.
• Howard-Young syndrome: A very rare syndrome characterized mainly by a small head, facial cleft and an extra big toe.
• Hoyeraal-Hreidarsson syndrome: A very rare syndrome characterized mainly by retarded growth, a small head, anemia, immunodeficiency and an underdeveloped brain (cerebellum).
• Human HOXA1 Syndromes: Human HOXA1 syndromes are very rare conditions caused by genetic defects involving the HOXA1 gene. The severity of the condition is highly variable depending on the extent of the defect and inheritance pattern. The most severe form is Bosley-Salih-Alorainy syndrome which involves a homozygous mutation. Other manifestations of the genetic defect are Athabaskan Brainstem Dysgenesis syndrome and Navajo Brainstem syndrome. The gene is involved in the development of the cardiovascular system, inner ear and the hindbrain so defects tend to involve mainly these parts of the body.
• Hunter-Carpenter-Macdonald syndrome: A very rare syndrome characterized by various abnormalities including small head, facial anomalies, mental retardation and hair, skin and nail anomalies. Fetal exposure to alcohol is believed to be a factor in the syndrome.
• Huntington's disease: Inherited disease causing progressive mental deterioration.
• Hutchinson Gilford Syndrome: A rare genetic disorder characterized by alopecia and senile-like appearance.
• Hyacinth bean poisoning: Hyacinth bean is a vine which bears elongated spikes of purple, white or pink flowers. The plant originated in Africa and is often used as an ornamental plant. The seeds and seed pod contain cyanogenic glycoside which can cause poisoning if large quantities are eaten. The seeds can be eaten if they are boiled for a long period of time with frequent water changes.
• Hydatidiform mole: A rare condition where an abnormal union between an egg and a sperm results in the formation of grape-like cysts instead of a baby. The growth is not malignant.
• Hydranencephaly: A very rare condition where fluid replaces a portion of the brain.
• Hydrocarbon poisoning: Excessive ingestion of hydrocarbon compounds such as turpentine, pine oil, cleaning agents, fuel, polishes, kerosene and car products.
• Hydrocephalus: A condition which is characterized by marked dilatation of the cerebral ventricles
• Hydrocephalus autosomal recessive: A rare, recessively inherited disorder where there is an abnormal buildup of fluid (cerebrospinal fluid) inside the skull.
• Hydrocodone overdose: Hydrocodone is a prescription drug used mainly to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Hydroxyacyl-coa dehydrogenase, type 2, deficiency: A rare genetic disorder involving the deficiency of an enzyme (hydroxyacyl-coa dehydrogenase). The severity of the symptoms is highly variable with some cases resulting in death during the first decade while others suffer psychomotor and regression. Some cases simply involve developmental delay.
• Hyperadrenalism: Excessive levels of adrenal hormones in the body. Symptoms depend on which hormone is involved and the degree of involvement. Adrenal hormones are aldosterone, corticosteroids, androgenic steroids, epinephrine and norepinephrine.
• Hyperandrogenism: Excessive levels of androgen (male sex hormones) that can occur in males and females.
• Hypercoagulability syndrome, due to glycosylphosphatidylinositol deficiency: A genetic disorder where the deficiency of a glycolipid called glycosylphosphatidylinositol causes seizures and blood coagulation problems.
• Hyperekplexia and epilepsy: A rare genetic disorder characterized by progressively severe epilepsy and hyperekplexia. The condition is caused by a defect on chromosome Xq22.1.
• Hyperexplexia: A rare condition where the startle reflex is exaggerated. Triggers include sudden noise, movement or touch.
• Hyperglycinemia: Increased blood levels of glycine. There are two types of hyperglycinemia (ketotic and nonketotic) with different symptoms.
• Hyperinsulinemic hypoglycemia, familial, 4: A disorder where too much insulin causes low blood sugar in infants. Prompt treatment is needed to avoid the brain being damaged by repeated periods of low blood sugar. The various types of familial hyperinsulinemic hypoglycemia are distinguished by their genetic origin. HHF4 is due to a mutation in the gene for 3-hydroxyacyl-CoA dehydrogenase on chromosome 4q22-q26.
• Hyperinsulinemic hypoglycemia, familial, 5: A disorder where too much insulin causes low blood sugar in infants. Prompt treatment is needed to avoid the brain being damaged by repeated periods of low blood sugar. The various types of familial hyperinsulinemic hypoglycemia are distinguished by their genetic origin. HHF5 is due to a mutation in the insulin receptor gene on chromosome 19p13.2.
• Hyperinsulinemic hypoglycemia, familial, 6: A disorder where too much insulin causes low blood sugar in infants. Prompt treatment is needed to avoid the brain being damaged by repeated periods of low blood sugar. The various types of familial hyperinsulinemic hypoglycemia are distinguished by their genetic origin. HHF6 is due to a mutation in the GLUD1 gene on chromosome 10q23.3.
• Hyperinsulinism due to glucokinase deficiency: An inherited condition characterized by high insulin levels due to deficiency of glucokinase. The lack of glucokinase prevents the pancreas from detecting low blood sugar so insulin continues to be secreted which keeps the blood sugar level low. Severe symptoms such as seizures and coma can result if sugar levels drop too low.
• Hyperinsulinism due to glutamodehydrogenase deficiency: An inherited condition characterized by high insulin and ammonia levels in the blood due to an enzyme deficiency (glutamate dehydrogenase). Episodes of low blood sugar can be triggered by fasting for too long or eating a protein meal. Severe symptoms such as seizures and coma can result if sugar levels drop too low.
• Hyperinsulinism in children, congenital: A rare inherited condition characterized by high insulin levels which cause low blood sugar. Severe symptoms such as seizures and coma can result if sugar levels drop too low.
• Hyperkalemic periodic paralysis: A rare inherited genetic condition characterized by temporary periods of severe muscle weakness. The condition tends to be more severe in males and can be triggered by stress, fasting, rest after exercise and eating foods high in potassium.
• Hypermethioninemia due to S-adenosylhomocysteine hydrolase deficiency: A rare disorder involving an enzyme deficiency which results in increased methionine levels in the blood. The condition manifests as psychomotor delay and severe muscle disease.
• Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome: A very rare inherited metabolic disorder where ammonia builds up in the body due to a defect in the transport of ornithine which prevents ammonia being converted to urea and being excreted through the urine. The severity of the condition is variable.
• Hyperoxia: A high level of oxygen in body tissues. It can be caused by exposure to high atmospheric pressure or long term inhalation of high oxygen concentrations. The high levels of oxygen may affect the lungs, nervous system or the eyes and thus can result in varying symptoms.
• Hyperprolinemia type 2: A rare metabolic abnormality involving a deficiency of a particular enzyme (Delta-1-pyrroline-5-carboxylate dehydrogenase) which affects amino acid metabolism and causes mental retardation and convulsions.
• Hypocalcemia: Low blood calcium levels
• Hypocalcemia, autosomal dominant: A dominantly inherited disorder of phosphate and calcium metabolism which results in low blood calcium levels. The severity of the condition is highly variable with some patients being asymptomatic.
• Hypoglycemia: Low blood sugar levels
• Hypoglycemia with deficiency of glycogen synthetase in the liver: A rare condition where low blood sugar is caused by a deficiency of an enzyme called glycogen synthetase in the liver. Symptoms tend to occur after periods of fasting.
• Hypokalemia: Abnormally low levels of potassium in the blood.
• Hypokalemic periodic paralysis: A rare inherited muscle condition characterized by periods of severe muscle weakness or paralysis which can last from hours to days. Episodes can occur as often as daily or only rarely.
• Hypomagnesemia 4, renal: A recessively inherited kidney disorder resulting in low blood magnesium levels due to its excessive excretion by the kidneys. This form of hypomagnesemia involves normal urinary and serum levels of calcium.
• Hypomagnesemia caused by selective magnesium malabsorption: A rare genetic disorder which causes low blood magnesium and results in low calcium levels also. Death can occur if left untreated. The condition is believed to results from abnormal intestinal absorption of magnesium rather than the excessive secretion of magnesium via malfunctioning kidneys.
• Hypomagnesemia primary: Low blood magnesium levels which is caused by the abnormal absorption and excretion of the mineral and can be caused by such things as kidney problems and intestinal malabsorption.
• Hypomelanosis of Ito: A rare genetic neurocutaneous disorder characterized by unusual patterns of depigmented skin and associated disorders such as seizures, psychomotor retardation and eye abnormalities.
• Hypomyelination - hypogonadotropic hypogonadism - hypodontia: A rare syndrome characterized by delayed puberty, missing teeth and reduced myelination which causes progressive ataxia.
• Hypoparathyroidism: causesd by lack of PTH
• Hypoparathyroidism - short stature - mental retardation: A very rare syndrome characterized mainly by low parathyroid hormone level, short stature and mental retardation.
• Hypoparathyroidism X-linked: Low parathyroid levels inherited in a X-linked manner and hence only males are symptomatic and females are asymptomatic carriers.
• Hypoparathyroidism familial isolated: A rare familial condition involving low levels of parathyroid hormone which upsets the body's ability to regulate calcium and phosphate. The severity of symptoms is determined by the how low the parathyroid hormone level is.
• Hypophosphatasia: A rare genetic disorder characterized by short limbs, dwarfism and general lack of bone calcification.
• Hypophosphatemic rickets: A rare genetic type of rickets involving defective phosphate transport and vitamin D metabolism in the kidneys. Poor calcium absorption from the intestines leads to bone softening.
• Hypopigmented lesions in children:
• Hypoplastic Left Heart Syndrome: A rare condition where an infant is born with an underdeveloped left side of the heart which prevents the heart from pumping oxygenated blood efficiently to various parts of the body.
• Hypothalamic hamartomas: A benign congenital tumor that develops on or near the hypothalamus.
• Hypothyroidism: The decreased activity of the thyroid gland
• Hysteria: hysteria describes a state of mind, one of unmanageable fear or emotional excesses
• IBIDS syndrome: A rare inherited skin disorder characterized by red, dry, scaly skin (I - ichthyosis), brittle hair (B), impaired physical and mental development (I), decreased fertility (D) and short stature (S). It is the same as PIBIDS syndrome but doesn't involve photosensitivity.
• Ichthyosis and male hypogonadism: A very rare syndrome characterized mainly by scaly skin and insufficient hormone production by the male gonads.
• Ichthyosis male hypogonadism: A very rare syndrome characterized mainly by scaly skin and insufficient hormone production by the male gonads.
• Ichthyosis mental retardation asymptomatic spasticity: A rare syndrome characterized mainly by mental retardation, spasticity and dry scaly skin.
• Idiopathic Parkinson's disease: Idiopathic Parkinson's disease is Parkinson's disease for which no particular cause can be determined - it is the most prevalent form of the condition. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Idiopathic basal ganglia calcification, childhood onset: A rare disorder involving the buildup of calcium deposits in various parts of the brain. It manifests as degeneration of the nervous system.
• Idiopathic dystonia DYT1: A rare movement disorder where the patients suffers uncontrollable muscle contractions and distortion of body position. The limbs are usually involved first and then the condition spreads to other parts of the body.
• Idiopathic hypereosinophilic syndrome: A rare blood disorder where the bone marrow produces too many eosinophils over a long period of time which can cause organ or tissue damage. The disorder can affect and part of the body but most often affects the skin, heart and nervous system. The increased eosinophil production continues for a long period of time (at least 6 months) and there is no apparent cause.
• Imerslünd-Grasbeck Syndrome: A rare genetic blood disorder where a defect in the vitamin B12 receptor means that it can't be absorbed from food during digestion. As a result of the low vitamin B12 levels, the body produces increased numbers of abnormal enlarged red blood cells (megaloblasts).
• Immobility: An inability to mobilise as normal
• Immunosuppressive Measles Encephalitis: A rare complication of the measles virus. Some patients with a history of measles before the age of two develop progressive brain inflammation. The condition is rare and tends to only occur only in immunosuppressed children e.g. those who have acute lymphocytic leukemia. Symptoms may develop suddenly and tends to occur from weeks to months after the measles has resolved.
• Inability to move: An inability of a person to voluntarily move
• Inborn amino acid metabolism disorder: A group of inherited disorders where the body is not able to metabolize amino acids consumed in the diet. Amino acids are a part of carbohydrates, fats and proteins and are metabolized in order to provide energy or to make other needed compounds. There are many steps involved in metabolism and the severity can be greatly variable depending on the exact nature of the disorder.
• Inborn errors of thyroid hormone synthesis related to hypothyroidism: Congenital hypothyroidism is inadequate thyroid hormone production in newborn infants. This can occur because of an anatomic defect in the gland, an inborn error of thyroid metabolism, or iodine deficiency.
• Inborn urea cycle disorder: A genetic disorder involving a deficiency of one of the enzymes needed in the urea cycle. The urea cycle is the process of removing ammonia from blood stream by converting it to urea and excreting it via urine. A build-up of ammonia in the blood is toxic to the body and can cause serious brain damage. The progressively severe symptoms usually become obvious within the first few weeks of birth. Nevertheless, mild or partial enzyme deficiencies may cause little or no symptoms or symptoms that don't start until later in life.
• Inclusion Body Myositis: Progressive inflammatory muscle disease causing muscle weakness.
• Incontinentia Pigmenti: A rare genetic skin pigmentation disorder characterized by eye, teeth, bone, nail and hair malformations as well as central nervous abnormalities and mental deficiency.
• Indian Tobacco poisoning: The Indian Tobacco plant contains alkaloids such as lobeline which can result in similar effects to nicotine. The plant is sometimes used in herbal preparations which is usually how poisoning occurs.
• Infant Cytomegalic virus: A serious CMV viral infection in newborns.
• Infantile epileptic-dyskinetic encephalopathy: A genetic disorder characterized by severe epilepsy and dyskinesia that starts during infancy. This form of the condition is caused by a defect on the ARX gene.
• Infantile sialic acid storage disorder: A rare inherited biochemical disorder characterized by the accumulation of sialic acid in the tissues and excretion of sialic acid in the urine. The disorder results in death within the first few years of life - usually in infancy.
• Infantile spasms: A condition which is characterized by brief muscular spasms in infants
• Infantile spasms - broad thumbs: A very rare syndrome characterized mainly by spasms during infancy and broad thumbs.
• Infectious meningitis: Infectious meningitis is meningitis caused by bacterial, viral, or protozoan infection. Most of the agents known to cause meningitis are infectious, but very few people exposed to them will get meningitis. Those at greatest danger include people with AIDS, infants, transplant patients, and others whose immune systems may be compromised.
• Insect sting allergies: When a person has an allergic reaction at the site of an insect sting
• Insulinoma: A rare form of pancreatic cancer that causes excessive secretion of the hormone insulin. A relatively small number of cases are malignant.
• Intercostal neuralgia: Nerve pain affecting the ribs
• Intervertebral disc disease: Degenerative changes in the discs located between vertebrae. The severity of the disorder is variable.
• Intestinal pseudoobstruction chronic idiopathic: A digestive disorder where the intestines are unable to contract normally and push food through the digestive system. This results in symptoms similar to an obstruction and hence the name pseudoobstruction. The condition has no obvious cause.
• Intracranial Embolism: Blockage of a blood vessel inside the skull and affects blood flow to parts of the brain. The severity of the condition is variable depending on the size, location and duration of the blockage.
• Intracranial Hemorrhages: Bleeding inside the skull. The condition is a medical emergency and the greater the bleeding, the more severe the condition.
• Intracranial arachnoid cysts: A rare disorder involving a fluid-filled cysts on the arachnoid membrane which is one of the thin layers of tissue that form a membrane which covers the brain. The type and severity of symptoms is determined by the size and location of the cyst.
• Intracranial arteriovenous malformation: A congenital malformation where there is an opening that connects an artery with a vein inside the brain. Severity of symptoms is determined by the extent of the malformation.
• Intrapartum Eclampsia: Intrapartum eclampsia is the development of seizures or coma in pregnant women suffering from high blood pressure. Intrapartum means that it occurs during the delivery of the baby. Eclampsia is a serious condition which requires urgent medical treatment. Eclampsia may be associated with moderate as well as significant increases in blood pressure. The blood pressure can return to normal after delivery or may persist for a period of time.
• Involuntary movements: The involuntary movement of the musculoskeletal system
• Isaacs syndrome: A rare disorder where muscles suffer from stiffness and cramping, particularly limb muscles.
• Isobutyric aciduria: An extremely rare metabolic disorder where the body is unable to metabolize certain proteins properly. More specifically, an insufficient level of the enzyme (isobutyryl-coenzyme A dehydrogenase) needed to metabolize the amino acid valine. The onset and severity of symptoms is variable.
• Isobutyryl-coenzyme A dehydrogenase deficiency: An extremely rare genetic condition where the body is unable to metabolize certain proteins properly. More specifically, an insufficient level of the enzyme (isobutyryl-coenzyme A dehydrogenase) needed to metabolize the amino acid valine.
• Jacobs syndrome: A very rare syndrome characterized mainly by heart inflammation (pericardium), joint disease and permanent finger flexion. The number of joints affected is variable.
• Jaffe-Lichtenstein-Sutro syndrome: A rare disorder characterized by pain and limited movement in one or more large joints such as the knee.
• Jankovic-Rivera syndrome: A rare inherited syndrome characterized by involuntary muscle jerking and progressive muscle wasting in the hands and feet.
• Japanese andromeda poisoning: An evergreen flowering shrub originating from Asia. The leaves and flower nectar contain a chemical called andromedotoxin which is highly toxic. Ingesting the leaves or nectar can result in death as the plant is considered highly toxic.
• Japanese encephalitis: A form of encephalitis caused by a flavivirus (Japanese B encephalitis virus - JBEV) and transmitted by mosquito bites. Most cases are mild and asymptomatic but severe cases can lead to death.
• Jaw spasm: A sudden involuntary contraction of the muscles of the jaw.
• Jequier-Kozlowski-skeletal dysplasia: A very rare syndrome characterized mainly by various skeletal abnormalities and facial anomalies.
• Jerky movements: A condition which is associated with unintentional jerky movements
• Jerky trunk movements: When there is jerky movements of the trunk
• Jervell and Lange-Nielsen Syndrome: A rare condition characterized by congenital deafness and a long Q-T interval which is where the heart takes longer than normal to recharge after a heartbeat.
• Jessamine poisoning: Jessamine is an evergreen shrub which bears aromatic flowers and small white or purplish berries. It is often utilized as a houseplant or grown in gardens. The unripe berries contain various alkaloids which can be toxic if large quantities of the berries are eaten.
• Jimsonweed poisoning: The Jimsonweed is a herb that bears single large white or lavender flowers and seeds surrounded by a spiny shell. The plant contains tropane alkaloids (mainly the seeds and leaves) which can cause symptoms if eaten in large quantities.
• Johnston Aarons Schelley syndrome: A very rare lethal syndrome characterized mainly by contractures and thickened skin.
• Joint injury: An injury to any joint in the body. The larger limb joints tend to be the most utilized and are hence more prone to injuries. Severity of symptoms varies depending on the type and location of injury and often the primary symptom is pain. A joint injury can involve damage to the bones, ligaments or other tissues of the joint. The injury may be acute (e.g. trauma) or chronic (e.g. overuse).
• Joint injury - elbow: An injury to the elbow which is the joint between the upper and lower arm. Severity of symptoms varies depending on the type and severity of the injury and often the primary symptom is pain. An elbow injury can involve damage to the bones, ligaments or other tissues of the joint. The injury may be acute (e.g. trauma) or chronic (e.g. overuse).
• Joint injury - shoulder: An injury to the shoulder which is the joint at the top of the arm. Severity of symptoms varies depending on the type and severity of the injury and often the primary symptom is pain. A shoulder injury can involve damage to the bones, ligaments or other tissues of the joint. The injury may be acute (e.g. trauma) or chronic (e.g. overuse).
• Joint pain: Pain affecting the joints
• Jorgenson-Lenz syndrome: A very rare syndrome characterized mainly by
• Joubert Syndrome: A rare neurological disorder where there is a defect in the part of the brain that controls coordination and balance.
• Juvenile Rheumatoid Arthritis: Chronic arthritis affecting children and teens
• Juvenile Scleroderma: Scleroderma that occurs in children. Scleroderma is a connective tissue disease that can affect the skin, blood vessels, the immune system and sometimes even the organs may be involved. The disorder may be localized or affect large areas of the body.
• Juvenile idiopathic arthritis: A group of chronic inflammatory joint disorders that affects children. The condition generally involves periods of time where the condition is active followed by periods of abatement of symptoms. In some cases, the condition can be systemic and can cause symptoms such as fever and rash with organ involvement. There are three main types of juvenile idiopathic arthritis - oligoarticular, polyarticular and systemic (Still's disease).
• Juvenile idiopathic arthritis, unclassified: A chronic inflammatory joint condition affecting children. This particular subtype is defined as unclassified as it doesn't fit into any of the other classifications.
• Juvenile myoclonic epilepsy: A form of epilepsy that occurs in teenagers and involves sudden muscle jerking and seizures which is especially common on awakening.
• Juvenile pilocytic astrocytoma: A type of brain tumor that occurs in children and young adults. The tumor is derived from a type of cell called an astrocyte and it can occur in various parts of the brain as well as the optic pathways and the spinal cord. Malignancy is rare. Symptoms may vary depending on the size and location of the tumor.
• Juvenile primary lateral sclerosis: A very rare genetic disorder characterized by increasing weakness and stiffness of the muscles in the arms, legs and face due to damage to nerve cells that control motor movement.
• KBG Syndrome: A very rare genetic disorder involving short stature, mental retardation, abnormal development of various bones.
• Kalam-Hafeez syndrome: A rare disorder characterized by low parathyroid levels in infants, retarded growth, mental retardation, dysmorphic features and seizures.
• Kashin-Bek disease: A type of osteoarthritis occurring mostly in children in China, Korea and Siberia and possibly caused by eating wheat infected with a particular fungus.
• Kawasaki disease: A childhood illness that generally affects the skin, mouth and lymph nodes.
• Kearns-Sayre Syndrome: A rare neuromuscular disorder characterized by pigmented deposits on the retina, heart disease and progressive paralysis of some eye muscles.
• Kernicterus: passage of bilirubin though the blood brain barrier
• Kidney damage - 1,2-Dichloromethane: Damage or injury to kidneys caused by exposure to a hydrocarbon called 1,2-Dichloromethane. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Acetaminophen: Damage or injury to kidneys caused by a type of analgesic called acetaminophen (Tylenol). Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Aminoglycosides: Damage or injury to kidneys caused by aminoglycoside antibiotics. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Aminosalicylic Acid: Damage or injury to kidneys caused by a type of antibiotic called aminosalicylic acid. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Amphotericin B: Damage or injury to kidneys caused by an antibiotic called amphotericin B. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Amyl Alcohol: Damage or injury to kidneys caused by exposure to amyl alcohol. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Anti-cancer drugs: Damage or injury to kidneys caused by exposure to anti-cancer drugs such as cyclosporine and cisplatin. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Aristolochic acid: Damage or injury to kidneys caused by exposure to aristolochic acid. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Arsenic: Damage or injury to kidneys caused by exposure to arsenic. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Aspirin: Damage or injury to kidneys caused by a type of analgesic called Aspirin. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Automobile exhaust: Damage or injury to kidneys caused by exposure to Automobile exhaust. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Bacitracin: Damage or injury to kidneys caused by a type of antibiotic called bacitracin. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Bismuth: Damage or injury to kidneys caused by exposure to bismuth. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Cadmium: Damage or injury to kidneys caused by exposure to cadmium. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Carbon Tetrachloride: Damage or injury to kidneys caused by exposure to Carbon tetrachloride. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Cephaloridine: Damage or injury to kidneys caused by a type of antibiotic called Cephaloridine. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Chloroform: Damage or injury to kidneys caused by exposure to a hydrocarbon called chloroform. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Chlorotetracycline: Damage or injury to kidneys caused by a type of antibiotic called Chlorotetracycline. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Chromium: Damage or injury to kidneys caused by exposure to chromium. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Cisplatin: Damage or injury to kidneys caused by exposure to an anti-cancer drug called Cisplatin. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Contrast agents: Damage or injury to kidneys caused by a contrast agent called sodium iodide used in some diagnostic tests. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Copper: Damage or injury to kidneys caused by exposure to copper. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Cyclophosphamide: Damage or injury to kidneys caused by exposure to an anti-cancer drug called Cyclophosphamide. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Cyclosporin: Damage or injury to kidneys caused by exposure to an anti-cancer drug called cyclosporine. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Degreasing solvents: Damage or injury to kidneys caused by exposure to degreasing solvents. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Dichloroacetylene: Damage or injury to kidneys caused by exposure to a hydrocarbon called Dichloroacetylene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Diethylene glycol: Damage or injury to kidneys caused by exposure to a hydrocarbon called Diethylene glycol. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Dioxane: Damage or injury to kidneys caused by exposure to a hydrocarbon called Dioxane. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Ethylene Glycol: Damage or injury to kidneys caused by exposure to ethylene glycol. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Ethylene glycol ethers: Damage or injury to kidneys caused by exposure to Ethylene glycol ethers. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Fuels: Damage or injury to kidneys caused by exposure to fuel. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Gasoline: Damage or injury to kidneys caused by exposure to gasoline. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Germanium: Damage or injury to kidneys caused by exposure to germanium. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Glue solvent vapors: Damage or injury to kidneys caused by exposure to glue solvent vapors. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Glues: Damage or injury to kidneys caused by exposure to glues. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Gold: Damage or injury to kidneys caused by exposure to gold. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Hairdressing solvents: Damage or injury to kidneys caused by exposure to hairdressing solvents. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Hairdressing sprays: Damage or injury to kidneys caused by exposure to hairdressing sprays. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Heavy metals: Damage or injury to kidneys caused by exposure to heavy metals. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Herbicide: Damage or injury to kidneys caused by exposure to herbicides. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Hexachloro-1,3-butadiene: Damage or injury to kidneys caused by exposure to a hydrocarbon called Hexachloro-1,3-butadiene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Hydrocarbons: Damage or injury to kidneys caused by exposure to hydrocarbons such as chloroform and styrene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Ibuprofen: Damage or injury to kidneys caused by a type of analgesic called Ibuprofen. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Lead: Damage or injury to kidneys caused by exposure to lead. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Lithium: Damage or injury to kidneys caused by exposure to lithium. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Mercury: Damage or injury to kidneys caused by exposure to mercury. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Methanol: Damage or injury to kidneys caused by exposure to methanol. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Methemoglobin-producing agents: Damage or injury to kidneys caused by exposure to methemoglobin-producing agents. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Methicillin: Damage or injury to kidneys caused by a type of antibiotic called methicillin. Kidney damage usually occurs as a result of an allergic reaction to the antibiotic. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Neomycin: Damage or injury to kidneys caused by a type of antibiotic called Neomycin. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Nonsteroidal anti-inflammatory drugs: Damage or injury to kidneys caused by a type of analgesic called nonsteroidal anti-inflammatory drugs. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Oxytetracycline: Damage or injury to kidneys caused by a type of antibiotic called Oxytetracycline. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Paint solvents: Damage or injury to kidneys caused by exposure to paint solvents. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Paint thinners: Damage or injury to kidneys caused by exposure to paint thinners. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Paints: Damage or injury to kidneys caused by exposure to paints. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Paraquat ochratoxin A: Damage or injury to kidneys caused by exposure to paraquat ochratoxin A. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Perchloroethylene: Damage or injury to kidneys caused by exposure to a hydrocarbon called Perchloroethylene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Pesticide solvents: Damage or injury to kidneys caused by exposure to pesticide solvents. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Pesticides: Damage or injury to kidneys caused by exposure to pesticides. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Platinum: Damage or injury to kidneys caused by exposure to platinum. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Polymyxin: Damage or injury to kidneys caused by a type of antibiotic called polymyxin. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Prostaglandin synthetase inhibitors: Damage or injury to kidneys caused by a type of analgesic called prostaglandin synthetase inhibitors. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Rifampin: Damage or injury to kidneys caused by a type of antibiotic called rifampin. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Silica: Damage or injury to kidneys caused by exposure to silica. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Silicon compounds: Damage or injury to kidneys caused by exposure to silicon compounds. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Silver: Damage or injury to kidneys caused by exposure to silver. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Solvents: Damage or injury to kidneys caused by exposure to solvents. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Styrene: Damage or injury to kidneys caused by exposure to a hydrocarbon called styrene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Sulphonamides: Damage or injury to kidneys caused by sulphonamide antibiotics. The kidney damage usually occurs as a result of an allergic reaction to the antibiotic. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Thallium: Damage or injury to kidneys caused by exposure to thallium. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Toluene: Damage or injury to kidneys caused by exposure to a hydrocarbon called toluene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Trichloroethane: Damage or injury to kidneys caused by exposure to a hydrocarbon called Trichloroethane. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Trichloroethylene: Damage or injury to kidneys caused by exposure to a hydrocarbon called trichloroethylene. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Trimethropin: Damage or injury to kidneys caused by a type of antibiotic called trimethropin. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - Uranium: Damage or injury to kidneys caused by exposure to Uranium. Often other organs and tissues are also affected but only the liver toxicity symptoms are listed below. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - analgesics: Damage or injury to kidneys caused by analgesics such as acetaminophen and nonsteroidal anti-inflammatory drugs. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage - antibiotics: Damage or injury to kidneys caused by antibiotics. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the toxicity. Kidney problems usually only occur with chronic use of the drug. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms.
• Kidney damage due to chemicals: Damage or injury to kidneys caused by substances such as chemicals and medicines. Often other organs and tissues are also affected but only the kidney toxicity symptoms are listed below. Symptoms vary depending on the degree of exposure and hence extent of the kidney damage or injury. Mild kidney damage may cause few if any symptoms whereas severe damage can ultimately result in kidney failure. Symptoms may be acute, subacute or chronic depending on the severity of the exposure. Factors such as age, dehydration and underlying kidney problems may also influence a person's risk of developing kidney problems and the severity of the symptoms. Occupational kidney damage is considered relatively uncommon due to current safe industrial practices.
• Kidney stones: A crystal deposit that is made of urates and phosphates that occurs in the kidneys
• Kidney symptoms: Symptoms affecting one or both kidneys.
• Kifafa seizure disorder: A rare form of seizure involving head nodding prior to the seizure and often associated with neurological symptoms and Parkinson-like symptoms.
• Kleeblattschaedel syndrome: A very rare syndrome characterized mainly by a head the is somewhat cloverleaf shaped.
• Klinefelter syndrome, variants: A genetic condition where males have at least one extra X chromosome or extra copies of both the X and Y chromosomes in each cell. Normally male cells contain one X and one Y chromosome in each cell. The condition is not inherited but is a result of problems during cell division.
• Knee locking: Inability to either straighten or bend knee
• Knee osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the knee joint as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Knee spasm: A sudden involuntary contraction of the muscles of the knee.
• Knee sprain: Damage to ligaments in the knee.
• Knee tendinitis: Inflammation of the tendons of the knee joint.
• Kniest dysplasia: A rare genetic bone growth disorder characterized by dwarfism, enlarged joints and facial deformities.
• Kohlschutter-Tonz syndrome: A rare syndrome involving degeneration of the central nervous system, seizures and abnormal tooth development.
• Koone-Rizzo-Elias syndrome: A rare congenital disorder characterized by mental retardation, spasticity and dry, scaly skin.
• Koussef nichols syndrome: A very rare syndrome characterized mainly by muscle problems, a high body temperature and various other physical abnormalities.
• Kousseff-Nichols syndrome: A very rare syndrome characterized mainly by muscle problems, a high body temperature and various other physical abnormalities.
• Krabbe disease, atypical, due to saposin A deficiency: An inherited biochemical disorder which results in neurological regression within a few months of birth. Death usually occurs during the first few years of life. The disorder is similar to Krabbe disease but is differentiated by the genetic origin of the biochemical defect. Krabbe disease involves a defect in the galactocerebrosidase gene whereas atypical Krabbe disease involves a defect in the prosaposin gene which causes a deficiency of saposin A.
• Krabbe leukodystrophy: A rare inherited biochemical disorder involving the deficiency of an enzyme called galactocerebrosidase. It is a leukodystrophy which refers to a group of genetic disorders that affect the growth of the protective coating around the brain nerves.
• Krabbé Disease: Brain myelin disorder with various symptoms.
• Krause-Kivlin syndrome: A rare genetic disorder characterized by short limb dwarfism, mental retardation and Peters anomaly.
• Kuru syndrome: A rare fatal disease that has been noted in a Eastern New Guinean tribe. It is believed to be prevalent in this tribe due to their history of cannibalism.
• Kuskokwim disease: A rare syndrome where abnormal muscle attachment causes abnormalities such as muscle wasting or excessive growth and contractures.
• L1 Syndrome: L1 Syndrome refers to range of disorders characterized by stiff muscles (spasticity) in the legs, reduced intelligence, excessive fluid in the brain (hydrocephalus) and abnormally bent thumbs. The range and severity of symptoms is highly variable. Disorders which varying forms of L1 Syndrome includes MASA syndrome, X-linked Corpus Callosum agenesis and X-linked Mental Retardation Complicated Hereditary Spastic Paraplegia type 1. The condition tends to produce mild if any symptoms in females in nearly all cases.
• Lactic Acidosis, Fatal Infantile: The excessive accumulation of lactic acid in the blood which leads to metabolic acidosis.
• Lafora disease: A rare genetic disorder caused by the inclusion of a substance called Lafora bodies in cells throughout the body. The condition is progressive and causes progressive seizures and dementia.
• Landau-Kleffner Syndrome: A neurological disorder which results in aphasia, epileptic seizures and inability to recognize sounds.
• Laplane-Fontaine-Lagardere syndrome: A very rare syndrome characterized mainly by very short stature and progressive stiffness of joints including the spine and hips.
• Late-onset Alzheimer's: Late-onset Alzheimer's is a form of Alzheimer's disease that doesn't appear to be linked to any genetic defects or familial pattern. It is by far the most common form of Alzheimer's - occurs in up to 90% of Alzheimer sufferers. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Latham-Munro syndrome: A rare inherited syndrome characterized by deafness and mutism at birth, epilepsy and myoclonus (muscle twitching).
• Lathosterolosis: A very rare disorder where an enzyme (sterol C5-desaturase) deficiency prevents the normal synthesis of cholesterol in the body. The deficiency causes various malformations, mental retardation and liver disease.
• Laurence-Moon Syndrome: A rare inherited disorder characterized by vision loss, impaired hormone production, mental retardation and spastic paraplegia.
• Lead poisoning: A type of heavy metal poisoning caused by excessive exposure to lead.
• Leg muscle strain: Damage to the leg muscles due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Leg spasm: A sudden involuntary contraction of the muscles of the leg.
• Legg-Calve-Perthes disease: Femur/hip bone disease mostly in children
• Leigh syndrome: A rare, progressive, neurological disorder characterized by the degeneration of the brain and impaired function of various body organs. The condition is caused by a systemic deficiency of the cytochrome C oxidase enzyme.
• Leigh syndrome, French Canadian type: A rare, progressive, inherited metabolic disorder where a deficiency of the enzyme cytochrome C oxidase affects skeletal muscles, connective tissue, brain and liver.
• Leigh syndrome, Saguenay-Lac-St. Jean type: A rare, progressive, inherited metabolic disorder where a deficiency of the enzyme cytochrome C oxidase affects skeletal muscles, connective tissue, brain and liver.
• Lennox-Gastaut Syndrome: A form of epilepsy that occurs mostly in preschool-aged children and is characterized mainly by absences.
• Leprechaunism: A very rare genetic disorder characterized by insulin resistance which leads to growth delay and endocrine system abnormalities.
• Lesch-Nyhan syndrome: Inherited biochemical disorder of purine metabolism caused by the virtual absence of an enzyme called hypoxanthine-guanine phosphoribosyltransferase or HPRT.
• Lethal arthrogryposis with anterior horn cell disease: A lethal genetic disorder involving multiple contractures and facial abnormalities.
• Lethal arthrogryposis with anterior horn cell disease (LAAHD): A lethal disorder characterized by arthrogryposis and loss of anterior horn motor neurons which results in a lack of fetal movement.
• Lethal congenital contracture syndrome (LCCS): A rare inherited lethal disorder characterized by multiple congenital contractures. There are two main types caused by different genetic defects. Type 2 differs from type 1 in that it includes additional head, face and eye symptoms and hydrops, joint webbing and fractures were usually absent.
• Lethal congenital contracture syndrome 1: A rare inherited lethal disorder characterized by multiple congenital contractures. Type 1 occurs as a result of a genetic defect on chromosome 9q34.
• Lethal congenital contracture syndrome 2: A rare inherited lethal disorder characterized by multiple congenital contractures. Type 2 occurs as a result of a genetic defect on chromosome 12q13. Type 2 differs from type 1 in that it includes additional head, face and eye symptoms and hydrops, joint webbing and fractures were usually absent.
• Leucinosis: A term used to describe high levels of leucine in the body. It is associated with a metabolic disorder called maple syrup urine disease where there is a deficiency of an enzyme needed to break down leucine so it builds up within the body.
• Leukemia: Cancer of the blood cells, usually white blood cells.
• Leukemia, T-Cell: A form of blood cancer characterized by the proliferation of cancerous T-cells which make up part of the body's immune system. The exact symptoms and progression vary depending on the subtype involved.
• Leukodystrophy: A very rare group of metabolic diseases where chemical anomalies affect the development or maintenance of the protective coating around nerves (myelin sheath). The brain, spinal cord and peripheral nerves may be involved. The range and severity of symptoms is determined by the chemical involved but one of the main symptoms for all the leukodystrophies is a gradual loss of previously acquired mental or physical skills.
• Leukoencephalopathy: Immune destruction of the myelin cover of nerves.
• Leukoencephalopathy - metaphyseal chondrodysplasia: A rare syndrome characterized by brain disease and abnormal skeletal development.
• Leukoencephalopathy - palmoplantar keratoderma: A very rare syndrome characterized mainly by
• Leukoencephalopathy, arthritis, colitis, and hypogammaglobulinema: A rare condition characterized by the association of arthritis, colitis, low blood gammaglobulin levels and brain anomalies.
• Leukomalacia: Softening or destruction of the white matter of the brain. Brain tissue that surrounds fluid-filled parts of the brain (ventricles) is destroyed. It tends to occur mainly in premature or newborn babies who have been deprived of oxygen or have poor blood flow to parts of the brain. Intrauterine infections and premature membrane rupture tend to predispose infants to this condition. This type of brain destruction can cause cerebral palsy. Severity of symptoms varies according to the degree of injury to the brain.
• Levine-Critchley syndrome: A very rare inherited disorder mainly involving progressive muscle weakness and wasting, abnormal limb movement, progressive cognitive loss and red blood cell abnormalities.
• Lhermitte-Cornil-Quesnel syndrome: A rare disorder characterized by the slowly-progressive degeneration of a part of the brain (pyramidal tract and globus pallidus).
• Lhermitte-Duclos disease: A rare disorder characterized by a slow growing brain tumor located in the cerebellum.
• Lhermitte-McAlpine syndrome: A type of neurodegenerative disorder that involves pyramidal and extrapyramidal symptoms. It can occur in middle-aged or old people and usually results in death within a year of onset.
• Limb dystonia: A nerve disorder which affects muscles. It causes prolonged muscle spasms (contractions) which results in repeated twisting motions or abnormal limb postures.
• Limbic encephalitis: Inflammation of the limbic system which is the part of the brain responsible for basic autonomic functions.
• Lindsay-Burn syndrome: A very rare syndrome characterized mainly by mental retardation, psychosis and enlarged testes.
• Lindstrom syndrome: A rare disorder characterized by mental retardation, facial anomalies, short stature and seizures.
• Lipoid proteinosis of Urbach and Wiethe: A rare congenital lipoid storage disease where lipids, carbohydrates and proteins are deposited onto blood vessel walls and other tissues.
• Lissauer paralysis: Diffuse degeneration of one side of the cerebral cortex which causes dementia, weakness and seizures.
• Lissencephaly: A very rare disorder characterized by abnormal brain formation so that the brain surface appears smooth rather than convoluted.
• Lissencephaly - immunodeficiency: A very rare syndrome characterized mainly by abnormal brain development and a poor immune system.
• Lissencephaly 3: A rare brain malformation where the surface of the brain is smoother than normal. The brain abnormality causes symptoms such as mental retardation and seizures. The severity of the disorder is variable and is caused by a genetic defect on chromosome 12q12-q14.
• Lissencephaly type 1, due to LIS 1 anomalies: A rare brain malformation where the surface of the brain is smoother than normal. Type 1 is caused by a defect on the LIS1 gene on chromosome 17p13.3. The severity of the symptoms are variable depending on the severity of the brain abnormality. Miller-Dieker syndrome is a subtype of this condition.
• Lissencephaly with cerebellar hypoplasia: Abnormal brain development characterized by an abnormally smooth brain surface and an underdeveloped cerebellum. The severity of the disorder is variable but often involves seizures and mental retardation.
• Lissencephaly, X-linked 2: A rare brain malformation where the surface of the brain is smoother than normal. Genital anomalies are also associated. The severity of the disorder is variable.
• Lissencephaly, X-linked, 1: Abnormal brain development resulting in an abnormally smooth brain surface which results in neurological symptoms such as mental retardation. This particular type is inherited in a X-linked manner is caused by a defect in the doublecortin gene on chromosome Xq22.3-q23.
• Lissencephaly, type 1, X-linked: Abnormal brain development characterized by an abnormally smooth brain. This form of the disorder is inherited in a X-linked manner (defect on the DCX gene) and the corpus callosum fails to develop. Males tend to be affected more severely than females.
• Listeriosis: Bacterial food poisoning
• Lithium toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Liver disease - retinitis pigmentosa - polyneuropathy - epilepsy: An inherited disorder characterized by an enzyme (Alpha-methyl-acyl-CoA racemase) deficiency, liver disease, epilepsy, polyneuropathy and eye problems. The neuropathy tends to start during adulthood.
• Liver symptoms: Symptoms affecting the liver
• Lobelia poisoning: Lobelia is a herbaceous plant which bears elongated shafts of small blue, white or red flowers. The plant contains alkaloids such as lobeline which can result in similar effects to nicotine. The plant is sometimes used in herbal preparations which is usually how poisoning occurs.
• Long QT syndrome type 10: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 10 is distinguished from other types by the origin of the genetic defect (SCN4B gene on chromosome 11q23).
• Long QT syndrome type 11: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 11 is distinguished from other types by the origin of the genetic defect (chromosome 7q21-q22).
• Long QT syndrome type 2: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 3 is distinguished from other types by the origin of the genetic defect (chromosome 7).
• Long QT syndrome type 3: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 3 is distinguished from other types by the origin of the genetic defect (chromosome 3p21).
• Long QT syndrome type 4: A very rare genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 4 is distinguished from other types by the origin of the genetic defect (gene for Ankyrin B on chromosome 4q25-q27).
• Long QT syndrome type 5: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 5 is distinguished from other types by the origin of the genetic defect (KCNE1 gene on chromosome 21q22.1-q22.2).
• Long QT syndrome type 6: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 6 is distinguished from other types by the origin of the genetic defect (KCNE2 gene on chromosome 21q22.1).
• Long QT syndrome type 9: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary. Type 9 is distinguished from other types by the origin of the genetic defect (caveolin 3 gene on chromosome 3p25).
• Long QT syndrome, familial: A familial heart condition which is characterized by prolongation of the QT interval of the heart rhythm. Exercise or excitement can exacerbate symptoms.
• Loquat poisoning: Loquat is a shrubby plant which bears clusters of small white flowers and largish yellow fleshy fruit. The plant is often used in gardens as an ornamental plant. The kernel from inside the seeds contains a chemical called cyanogenic glycoside which can be poisonous if eaten in large quantities. The fruit from the plant is actually safe to eat but the seeds should be avoided.
• Lower back muscle strain: Damage to the lower back muscles due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Lower back sprain: Damage to ligaments in the lower back.
• Lubs X-linked mental retardation syndrome: A severe inherited form of X-linked mental retardation.
• Lumbar malsegmentation - short stature: A very rare syndrome characterized mainly by short stature and abnormal segmentation of the vertebrae in the abdominal segment of the spine.
• Lundberg I: A rare inherited disorder characterized by damage to the eye and a reduced ability to control movements as well as foot problems.
• Lupine poisoning: A flowering herb which produced long clusters of flowers in various colors. It also produces flat, seed-filled pods. The seeds contain toxic chemicals (alkaloids such as lupinine, anagyrine, sparteine) which can cause poisoning if eaten in large quantities. Different species have different amounts of the toxin and some species are not toxic at all.
• Lupus: Autoimmune disease with numerous effects on various organs and linings.
• Lyme disease: Lyme disease is an emerging infectious disease caused by at least three species of bacteria belonging to the genus Borrelia.
• Lymphangiectasies and lymphedema Hennekam type: A rare disorder characterized by buildup of lymphatic fluid in the limbs, face and genitals, seizures and mental and growth retardation.
• Lymphocytic choriomeningitis: Rodent-borne viral disease often causing meningitis or encephalitis
• Lymphoedema - lymphangiectasia - mental retardation: A rare disorder characterized by buildup of lymphatic fluid in the limbs, face and genitals, seizures and mental and growth retardation.
• Lymphomatoid Granulomatosis: A rare, progressive blood vessel disease where nodular lesions destroy blood vessels - lungs, skin and nervous system are mainly involved.
• Lymphomatous thyroiditis: Progressive thyroid gland enlargement due to autoimmune disease.
• Lysteria monocytoigeneses meningitis: A very rare form of meningitis (bacterial infection of the brain membrane or meninges) caused by Listeria monocytogenes. The condition is more common in the elderly and those with poor immune system and death is common.
• MELAS: A mitochondrial disorder characterized by stroke-like episodes, headaches, vomiting and other neurological symptoms.
• MGA 4: MGA (methylglutaconic aciduria) is a rare genetic disorder where the body's cells are unable to make sufficient energy resulting in an accumulation in the body of 3-methylglutaconic acid. Type 4 is characterized by symptoms which overlap type 1 and 3.
• MN1: A rare genetic defect that can cause meningiomas to develop. A meningioma is a tumor of the meninges which is a membrane that encloses the brain and spinal cord The genetic defect occurs on chromosome 22. The tumor is usually slow-growing and benign.
• MPS 3 C: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) due to deficiency of an enzyme called acetyl-CoA:alpha-glucosamide N-acetyltransferase. Mucopolysaccharide levels build up and are then deposited in various tissues.
• MPS 3 D: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) due to deficiency of an enzyme called N-acetylglucosamine-6-sulfate sulfatase. Mucopolysaccharide levels build up and are then deposited in various tissues.
• MRXS-Christianson: A very rare syndrome characterized mainly by mental retardation, mutism, facial anomalies, epilepsy and weak eye muscles. Males tended to have severe mental retardation whereas female carriers had mild or no mental retardation. Patients do eventually walk but then often lose this ability by the age of 10 years. Female carriers tend to have mild symptoms and males have severe symptoms - symptoms are variable to some degree.
• MacDermot-Winter syndrome: A very rare syndrome characterized mainly by a small head, underdeveloped genitalia and a protrusion of the area between the eyes (glabella).
• Machado-Joseph Disease: Rare genetic muscle disease causing muscle weakness.
• Macleod-Fraser syndrome: An inherited connective tissue disorder characterized by long thin fingers and contractures involving the knees, elbows, fingers and sometimes other joints.
• Macrogyria, pseudobulbar palsy and mental retardation: A very rare syndrome characterized mainly by abnormal brain development which results in mild mental retardation, epilepsy, developmental delay and pseudobulbar palsy which affects speech, chewing and swallowing functions.
• Magnesium deficiency: A deficiency in the magnesium stores of the body
• Major depressive disorder related fibromyalgia: Major depressive disorder related fibromyalgia refers to fibromyalgia that is associated with major depression. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues.
• Malformations in neuronal migration: A rare disorder where the brain fails to develop normally - usually the cerebral cortex is involved. Various parts of the brain can be affected to various degrees depending on what stage of development the defect occurs. Mental retardation is one of the most common symptoms associated with brain malformations.
• Malignant astrocytoma: A very malignant primary brain tumor consisting of astrocytes. The tumor spreads throughout the brain and a third of patients dying in the first year.
• Malignant hypertension: Malignant hypertension is a condition characterized by very high blood pressure and swelling of the optic nerve. This type of hypertension is more common in people with kidney problems such as narrowed kidney blood vessels. The condition is a medical emergency which can cause organ damage if not treated promptly.
• Malignant rhabdoid tumors: An aggressive malignant tumor that occurs in children. Symptoms depend on the location of the tumor. The tumors often form in the kidneys and then tend to metastasize to the brain and sometimes the lungs. Symptoms will vary depending on the location of the tumor.
• Malonic aciduria: A very rare genetic disorder where a deficiency of a particular enzyme (malonyl-CoA decarboxylase) impairs the body's ability to convert fatty acids into energy that can be used by muscles such as the heart muscle. Fatty acids also accumulate in the body as they are not metabolized.
• Mandibuloacral dysplasia: A very rare syndrome characterized mainly by a prematurely aged appearance and bone abnormalities. There are two subtypes with type B involving loss of fat layers under the skin mainly in the extremities, face and trunk whereas type A involves mainly the extremities. The severity of the symptoms is variable.
• Mandibuloacral dysplasia with type A lipodystrophy: A very rare syndrome characterized mainly by a prematurely aged appearance and bone abnormalities. Loss of fat layers under the skin occurs mainly in the extremities in type B. The severity of the symptoms is variable.
• Mania: Inappropriately euphoric mood usually with hyperactivity and other symptoms.
• Mann syndrome: Symptoms caused by trauma resulting in bruising of the brain. When standing with their eyes closed, patients tend to sway towards the side of the brain injury.
• Maple syrup urine disease: An inherited metabolic disorder involving amino acid metabolism and characterized by a sweet smelling urine, similar to maple syrup.
• Maple syrup urine disease, type 1A: A very rare inherited metabolic disorder involving abnormal metabolism of branched chain amino acids (leucine, isoleucine and valine) and resulting in severe illness which generally leads to death if not treated. Even mild form can result in mental and physical retardation if untreated. Various types of maple syrup urine disease involve different genetic defects - type 1A specifically involves a defect in the E1-alpha subunit gene.
• Maple syrup urine disease, type 1B: A very rare inherited metabolic disorder involving abnormal metabolism of branched chain amino acids (leucine, isoleucine and valine) and resulting in severe illness which generally leads to death if not treated. Even mild form can result in mental and physical retardation if untreated. Various types of maple syrup urine disease involve different genetic defects - type 1B specifically involves a defect in the E1-beta subunit gene.
• Maple syrup urine disease, type II: A very rare inherited metabolic disorder involving abnormal metabolism of branched chain amino acids (leucine, isoleucine and valine) and resulting in severe illness which generally leads to death if not treated. Even mild form can result in mental and physical retardation if untreated. Various types of maple syrup urine disease involve different genetic defects - type 2 specifically involves a defect in the E2 subunit gene.
• Maple syrup urine disease, type III: A very rare inherited metabolic disorder involving abnormal metabolism of branched chain amino acids (leucine, isoleucine and valine) and resulting in severe illness which generally leads to death if not treated. Even mild form can result in mental and physical retardation if untreated. Various types of maple syrup urine disease involve different genetic defects - type 3 specifically involves a defect in the E3 subunit gene.
• Marchiafava-Bignami disease: A progressive syndrome associated with alcohol abuse and/or nutritional disorder. It is characterized by fits, stupor, dementia and coma.
• Mareck's disease - nervous system: A viral disease that affects poultry - it is very contagious and is a herpes virus. The virus tends to affect the nerves and cause tumors in internal organs. Poultry may be unable to lay eggs or may even die. Young birds are more susceptible than older birds with death most common between the ages of 8 and 20 weeks. The virus may attack the nervous system and result in paralysis or it may attack the visceral system and cause tumors in the internal organs. Some birds may die without any obvious symptoms.
• Mareck's disease - visceral: A viral disease that affects poultry - it is very contagious and is a herpes virus. The virus tends to affect the nerves and cause tumors in internal organs. Poultry may be unable to lay eggs or may even die. Young birds are more susceptible than older birds with death most common between the ages of 8 and 20 weeks. The virus may attack the nervous system and result in paralysis or it may attack the visceral system and cause tumors in the internal organs. Some birds may die without any obvious symptoms.
• Marek disease: A viral disease that affects poultry - it is very contagious and is a herpes virus. The virus tends to affect the nerves and cause tumors in internal organs. Poultry may be unable to lay eggs or may even die. Young birds are more susceptible than older birds with death most common between the ages of 8 and 20 weeks. The virus may attack the nervous system and result in paralysis or it may attack the visceral system and cause tumors in the internal organs. Some birds may die without any obvious symptoms.
• Marek's disease: A viral disease that affects poultry - it is very contagious and is a herpes virus. The virus tends to affect the nerves and cause tumors in internal organs. Poultry may be unable to lay eggs or may even die. Young birds are more susceptible than older birds with death most common between the ages of 8 and 20 weeks. The virus may attack the nervous system and result in paralysis or it may attack the visceral system and cause tumors in the internal organs. Some birds may die without any obvious symptoms.
• Marijuana abuse: Illicit depressant/hallucinogenic drug
• Marinesco-Sjogren syndrome: A group of recessively inherited disorder characterized mainly by incoordination due to a brain anomaly.
• Marinesco-Sjögren I: A rare condition characterized by cerebellar ataxia, speaking difficulty, mental retardation, short stature and tooth, hair and nail abnormalities.
• Massa-Casaer-Ceulemans syndrome: A very rare syndrome characterized mainly by abnormal brain development (lissencephaly - smooth brain) and multiple joint contractures at birth.
• Mastocytosis - short stature - hearing loss: A very rare syndrome characterized mainly by short stature, abnormal skin pigmentation, small ears and hearing impairment.
• Mastocytosis, cutaneous, with short stature, conductive hearing loss and microtia: A very rare syndrome characterized mainly by short stature, abnormal skin pigmentation, small ears and hearing impairment.
• Maternal hyperphenylalaninemia: A rare disorder where a mother suffering from phenylketonuria during pregnancy can result in various birth abnormalities.
• Maternally Inherited Leigh Syndrome: A rare condition where Leigh syndrome is inherited from the mother. Leigh syndrome is characterized by degeneration of the brain and impaired function of various organs.
• Matsoukas syndrome: An extremely rare condition characterized by mental retardation, eye problems, facial anomalies and joint problems.
• Mayapple poisoning: The Mayapple is a small flowering plant which is often found growing naturally. It bears small single flowers and apple-like fruit which turns yellow when ripe. The unripe fruit and leaves contain a chemical called podophyllin which can cause poisoning if eaten. The plant is considered highly toxic and death can occur if sufficient quantities are eaten. The leaves, roots and unripe fruit are toxic but the ripe fruit is edible. The plant has been used to treat venereal warts.
• McDowall syndrome: A very rare syndrome characterized mainly by mental retardation and excessive skin folds and furrows on the scalp.
• Measles Encephalitis in Children with Immunosuppression: A rare complication of the measles virus. Some patients with a history of measles before the age of two develop progressive brain inflammation. The condition is rare and tends to only occur only in immunosuppressed children e.g. those who have acute lymphocytic leukemia. Symptoms may develop suddenly and tends to occur from weeks to months after the measles has resolved.
• Medium and long chan 3-hydroxyacyl-coenzyme A dehydrogenase deficiency: A metabolic disorder characterized by the deficiency of an enzyme (3-hydroxyacyl-coenzyme A dehydrogenase) which is needed to metabolise long and medum-chain fatty acids. The severity of symptoms may vary depending on the degree of the deficiency.
• Medium-Chain Acyl-CoA Dehydrogenase Deficiency: A rare disorder where the body lacks enzymes needed to convert some fats (medium-chain fatty acids) into energy and hence these fats build up in the body and cause damage.
• Medulloblastoma: A type of brain tumor.
• Megalencephalic leukoencephalopathy with subcortical cysts: A very rare syndrome characterized mainly by a progressive brain destruction that causes mental retardation and incoordination that starts early in life.
• Megalencephaly: Abnormally large brain.
• Megalencephaly - polymicrogyria - post-axial polydactyly - hydrocephalus: A rare syndrome characterized mainly by brain abnormalities, extra digits and a excess fluid inside the skull.
• Megaloblastic Anemia 1: A rare genetic blood disorder where a defect in the vitamin B12 receptor means that it can't be absorbed from food during digestion. As a result of the low vitamin B12 levels, the body produces increased numbers of abnormal enlarged red blood cells (megaloblasts).
• Meige syndrome: A neurological movement disorder involving symptoms such as involuntary facial movements and eye muscle spasms.
• Meinecke syndrome: A very rare syndrome characterized mainly by mental retardation and short broad thumbs.
• Melanoma - astrocytoma syndrome: A rare syndrome characterized by the association of a melanoma with a type of brain tumor called an astrocytoma. The exact symptoms may vary depending on the exact location of the brain tumor.
• Melioidosis: Bacterial infection from soil or water.
• Meninges cancer: A disorder where a cancerous malignancy is found in the meninges of the brain
• Meningioma: A slow-growing tumor of the meninges that is not cancerous. Symptoms are determined by the size and location of the tumor.
• Meningitis: Infection of the membrane around the brain (as a symptom)
• Meningococcal A: Meningococcal meningitis is an infection that causes inflammation of the membranes covering the brain and spinal cord. Meningococcal meningitis A is caused by meningococcus A which is mostly common in hyperendemic areas in Africa known as the meningitis belt.
• Meningococcal B: Meningococcal meningitis B is an infection that causes inflammation of the membranes covering the brain and spinal cord.
• Meningococcal C: Meningitis C is a strain of meningococcal meningitis, a bacterial infection of the membranes surrounding the brain and spinal cord.
• Meningococcal disease: Dangerous bacterial infection causing meningitis or bacteremia.
• Meningococcal infection: A rare infectious disease caused by a bacterium called Neisseria meningitides.
• Meningoencephalocele: A very rare developmental disorder where a part of the membrane that covers the brain and or part of the brain itself protrudes through an abnormal opening in the skull. The condition may be asymptomatic or if the defect is large, severe neurological abnormalities may result.
• Meniscus injury: Knee damage often from trauma or injury
• Menkes Disease: Genetic disease of copper deficiency.
• Mental Retardation - Pterygia - Shortness - Distinctive Facial Appearance: A very rare syndrome characterized mainly by short stature, underdeveloped genitals and various skull and facial anomalies.
• Mental mixed retardation - deafness - clubbed digits: A rare disorder characterized mainly by mental retardation, deafness and clubbed fingers.
• Mental mixed retardation deafnes clubbed digits: A rare disorder characterized mainly by mental retardation, deafness and clubbed fingers.
• Mental retardation - arachnodactyly - hypotonia - telangiectasia: A very rare syndrome characterized mainly by mental retardation, short fingers, reduced muscle tone and spider veins (telangiectasia).
• Mental retardation - dysmorphism - hypogonadism - diabetes: A very rare syndrome characterized mainly by mental retardation, hypogonadism, diabetes and facial and skull abnormalities.
• Mental retardation - epilepsy: A very rare syndrome characterized by the association of mental retardation with epilepsy.
• Mental retardation - epilepsy - bulbous nose: A very rare syndrome characterized mainly by mental retardation, epilepsy and a bulbous nose. The condition has been reported in only two families.
• Mental retardation - epilepsy, X-linked: A rare inherited disorder characterized by the association of mental retardation with epilepsy. The disorders are inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms.
• Mental retardation - epileptic seizures - hypogonadism - hypogenitalism -microcephaly - obesity: A very rare syndrome characterized mainly by mental deficiency, epilepsy, small head, small genitals and obesity. Death occurs within the first two years of life.
• Mental retardation - hypocupremia - hypobetalipoproteinemia: A very rare syndrome characterized mainly by mental retardation, low blood copper levels and low betalipoprotein levels in the blood.
• Mental retardation - short broad thumbs: A very rare syndrome characterized mainly by mental retardation and short, broad thumbs.
• Mental retardation - short stature - deafness - genital: A very rare syndrome characterized mainly by mental retardation, short stature, deafness and genital abnormalities.
• Mental retardation - short stature - hand contractures - genital anomalies: A very rare syndrome characterized mainly by mental retardation, short stature, hand contractures and genital abnormalities.
• Mental retardation - short stature - heart and skeletal anomalies: A very rare syndrome characterized mainly by mental retardation, short stature and heart and skeletal anomalies.
• Mental retardation - spasticity - ectrodactyly: A very rare syndrome characterized mainly by mental retardation, spasticity and a cleft hand. In the reported case, the parents came from the same bloodline.
• Mental retardation X-linked dysmorphism: A very rare syndrome characterized mainly by mental retardation, partially dislocated knees and teeth and facial abnormalities.
• Mental retardation athetosis microphthalmia: A very rare syndrome characterized mainly by the association of mental retardation, small eyes and a movement disorder.
• Mental retardation progressive spasticity: A condition characterized by mental retardation and progressive spasticity.
• Mental retardation progressive spasticity, X-linked: A very rare syndrome characterized mainly by mental retardation and progressive spasticity and seizures. The disorder is X-linked and hence only affects males.
• Mental retardation syndrome, Belgian type: A rare form of mental retardation reported in a Belgian family.
• Mental retardation unusual facies ampola type: A rare genetic disease characterized primarily by mental retardation, facial anomalies, short stature, seizures and finger and toe abnormalities.
• Mental retardation, Buenos Aires type: A very rare syndrome characterized mainly by mental retardation, physical retardation, unusual facial appearance and heart and kidney defects.
• Mental retardation, Microcephaly, Epilepsy and Ataxia Syndrome: A very rare syndrome characterized mainly by mental retardation, mutism, facial anomalies, epilepsy and weak eye muscles. Males tended to have severe mental retardation whereas female carriers had mild or no mental retardation. Patients do eventually walk but then often lose this ability by the age of 10 years. Female carriers tend to have mild symptoms and males have severe symptoms - symptoms are variable to some degree.
• Mental retardation, Smith-Fineman-Myers type: A rare inherited disorder characterized mainly by mental retardation and low facial muscle tone.
• Mental retardation, Wolff type: A very rare syndrome characterized mainly by severe mental retardation and facial anomalies. The parents came from the same bloodline.
• Mental retardation, X-linked - corpus callosum agenesis - spastic quadriparesis: A rare disorder characterized by mental retardation, abnormal development of a part of the brain called the corpus callosum and spastic quadriparesis. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms.
• Mental retardation, X-linked - craniofacial dysmorphology - epilepsy - ophthalmoplegia - cerebellar atrophy: A very rare syndrome characterized mainly by mental retardation, mutism, facial anomalies, epilepsy and weak eye muscles. Males tended to have severe mental retardation whereas female carriers had mild or no mental retardation. Patients do eventually walk but then often lose this ability by the age of 10 years. Female carriers tend to have mild symptoms and males have severe symptoms - symptoms are variable to some degree.
• Mental retardation, X-linked - epilepsy - progressive joint contractures - typical face: A rare disorder characterized by mental retardation, epilepsy, unusual facial appearance and slowly-progressive joint contractures. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms.
• Mental retardation, X-linked - hypotonia - recurrent Infections: A severe inherited form of X-linked mental retardation.
• Mental retardation, X-linked - seizures - psoriasis: A rare syndrome characterized mainly by mental retardation, seizures and a skin disorder.
• Mental retardation, X-linked syndromic 12: A syndromic form of mental retardation which also involves mutism, retarded growth, seizures and frequent infections. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms. The genetic defect is located on chromosome Xp11.
• Mental retardation, X-linked with brachydactyly and macroglossia: A syndromic form of mental retardation which also involves short digits and an enlarged tongue. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms.
• Mental retardation, X-linked, 12: A rare form of mental retardation inherited in a X-linked manner. It occurs as a result of a defect on chromosome Xp11.
• Mental retardation, X-linked, 16: A rare form of mental retardation inherited in a X-linked manner. It occurs as a result of a defect in the MECP2 gene on chromosome Xq28. Females tended to be affected as well as males although to a lesser degree.
• Mental retardation, X-linked, 94: A rare form of mental retardation inherited in a X-linked manner. It occurs as a result of a defect in the GRIA3 gene on chromosome Xq25-q26.
• Mental retardation, X-linked, Armfield type: A rare disorder characterized by mental retardation, seizures, short stature, small hands and small feet. The disorder is X-linked and hence only males exhibit the symptoms. The genetic defect occurs on chromosome Xq28.
• Mental retardation, X-linked, Cabezas type: A rare X-linked disorder characterized by mental retardation, muscle wasting, short stature and other problems. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms.
• Mental retardation, X-linked, Wittwer type: A rare disorder characterized by severe mental retardation, retarded growth, seizures and vision and hearing problems. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms.
• Mental retardation, X-linked, syndromic, due to JARID1C mutation: A rare disorder characterized by mental retardation, spasticity and other variable features. The disorder is inherited in a X-linked manner which means that only males display the full range of symptoms whereas female carriers may have mild or no symptoms. The disorder is caused by a defect on the JARID1C gene on chromosome Xp11.22-p11.21.
• Mental retardation, X-linked, with cerebellar hypoplasia and distinctive facial appearance: A very rare syndrome characterized by moderate to severe mental retardation, unusual facial appearance and an underdeveloped brain.
• Mental retardation, epileptic seizures, hypogonadism and hypogenitalism, microcephaly, and obesity: A very rare syndrome characterized mainly by mental deficiency, epilepsy, small head, small genitals and obesity. Death occurs within the first two years of life.
• Mephenytoin - Teratogenic Agent: There is evidence to indicate that exposure to Mephenytoin during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
• Mercury - Teratogenic Agent: There is strong evidence to indicate that exposure to Mercury during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the stage of pregnancy that the exposure occurred at.
• Mercury poisoning: A type of heavy metal poisoning caused by excessive exposure to mercury.
• Mercury poisoning - Folk Remedies: Various folk remedies and medicines contain inorganic mercury and mercury salts. They can lead to mercury poisoning and severe cases can result in death. Children tend to be more sensitive to the effects of mercury poisoning than adults. Even low levels of exposure can cause neurological symptoms in infants and young children. Fetal exposure to mercury can also result in symptoms.
• Mercury poisoning - consumption of contaminated fish: Eating fish contaminated with mercury can lead to mercury poisoning in humans. The severity and range of symptoms experienced can vary greatly depending on the level and duration of exposure. Severe poisoning can lead to death. Pregnant women who eat mercury contaminated fish may give birth to infants who suffer symptoms such as ataxia, tremors, seizures, mental retardation and cerebral palsy. An epidemic was reported where hundreds of Japanese villagers suffered mercury poisoning after eating fish contaminated by a nearby factory. Nearly half of the victims eventually died and children born during that period suffered a variety of neurological problems.
• Mescal poisoning: The Mescal is a small rounded cactus which has no spines but has tufts of hairs and a flower in the centre. The plant is grown for use as a narcotic in some parts of the world due to its hallucinogenic effect. All above-ground parts of the plant contain toxic chemicals (mescaline, lophophorine) which can cause symptom if eaten. The plant itself is considered to have a low level of toxicity but the chemical mescaline derived from it can cause strong symptoms if ingested in excessive quantities. The psychic effects following plant ingestion can last from 6 to 12 hours.
• Mesothelioma, adult malignant: A rare type of malignant cancer that occurs in the pleura (chest lining) or peritoneum (abdominal lining). The cancer develops in people who have inhaled asbestos fibres. Symptoms tend to occur many years or even decades after the exposure.
• Mesothelioma, adult malignant - pleural: A rare type of malignant cancer that occurs in the pleura (chest lining). The cancer develops in people who have inhaled asbestos fibers. Symptoms tend to occur many years or even decades after the exposure.
• Metabolic acidosis: metabolic acidosis is a process which if unchecked leads to acidemia (i.e. blood pH is low (less than 7.35) due to increased production of H+ by the body or the inability of the body to form bicarbonate (HCO3-) in the kidney
• Metabolic disorder: occurs when abnormal chemical reactions occur in the body
• Metachromatic Leukodystrophy: An inherited biochemical deficiency involving a deficiency of the enzyme called arylsulfatase A which leads to a harmful buildup of fatty material in the body.
• Metaphyseal chondrodysplasia with cone-shaped epiphyses, normal hair, and normal hands: A rare disorder of cartilage development which causes abnormal bone development that mainly affects the legs.
• Metaphyseal chondrodysplasia, recessive type: A recessively inherited skeletal disorder characterized by abnormal development of the bone metaphyses which results in short stature from birth.
• Metastatic insulinoma: A rare form of pancreatic cancer that causes excessive secretion of the hormone insulin and can spread to other parts of the body (metastasis).
• Metatrophic dysplasia: A very rare form of dwarfism involving short limbs and a long trunk. Less than 100 cases of the condition have been reported.
• Methamphetamine overdose: Methamphetamine is a prescription drug mainly used to treat ADHD . Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Methylcobalamin deficiency cbl G type: An inherited organic acid disorder where an enzyme deficiency (cbl G) impairs the body's ability to break down certain proteins consumed in the diet. This results in a buildup of homocystine which results in harmful affects.
• Methylene tetrahydrofolate reductase deficiency: A inborn error of metabolism where an inherited deficiency of methylene tetrahydrofolate reductase causes symptoms of ranging severity - from asymptomatic to severe neurological degeneration and premature death.
• Methylmalonic acidemia, synthesis defect of AdoCbl and MeCbl: An inherited organic acid disorder where an enzyme deficiency impairs the body's ability to break down certain proteins (methionine, threonine, isoleucine and valine) consumed in the diet. This results in a buildup of glycine and methylmalonic acid which results in harmful affects. The disorder results from a combined synthesis defect of AdoCbl and MeCbl.
• Methylmalonic acidemia, vitamin B12 responsive: A rare genetic disorder characterized by the impaired ability to make a chemical called adenosylcobalamin. Adenosylcobalamin is a derivative of vitamin B12. The defect results a biochemical abnormality which affects the body's normal biochemical functioning. The condition responds to the administration of vitamin B12.
• Methylmalonic aciduria - homocystinuria: A rare group of disorders characterized by methylmalonic aciduria and homocystinuria resulting from abnormal metabolism of vitamin B12 by the liver. There are various subtypes of the condition with varying ages of onset and severity of symptoms.
• Methylmalonic aciduria - microcephaly - cataract: A very rare syndrome characterized mainly by excess methylmalonic acid in the urine, small head and cataracts.
• Methylmalonicacidemia with homocystinuria, cbl D: An inherited organic acid disorder where an enzyme deficiency (cblD) impairs the body's ability to break down certain proteins (methionine, threonine, isoleucine and valine) consumed in the diet. This results in a buildup of methylmalonic acid and homocystine which results in harmful affects.
• Methylmalonicaciduria with homocystinuria, cobalamin F: An inherited organic acid disorder where an enzyme deficiency (cbl F) impairs the body's ability to break down certain proteins (methionine, threonine, isoleucine and valine) consumed in the diet. This results in a buildup of methylmalonic acid and homocystine which results in harmful affects.
• Methylmalonicaciduria, vitamin B12 unresponsive, mut 0: A metabolic disorder whose severity is somewhat variable - most patients die within months of birth with survivors having neurological problems. The condition involves abnormal metabolism of vitamin B12 which doesn't respond to treatment using vitamin B12 administration. This disorder is more severe than the mut (-) form
• Methylmercury - Teratogenic Agent: There is evidence to indicate that exposure to Methyl Mercury during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
• Metoclopramide - Teratogenic Agent: There is evidence to indicate that exposure to Metoclopramide during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
• Micrencephaly corpus callosum agenesis: A very rare disorder characterized by abnormal brain development which results in a very small brain. Patients may die during infancy and survivors suffer mental retardation and other physical abnormalities.
• Micrencephaly olivopontocerebellar hypoplasia: A rare fatal condition characterized by brain disease and a small underdeveloped brain.
• Microcephalic osteodysplastic primordial dwarfism types 1 and 3: Microcephalic osteodysplastic primordial dwarfism types 1 and 3 were originally regarded as separate conditions but it was recently concluded that they were different expressions of the same condition. The main differences between the two forms is a difference in the radiological bone anomalies. The condition is characterized mainly by bone abnormalities, short stature and a small head.
• Microcephaly: A smaller than average brain
• Microcephaly - mental retardation - spasticity - epilepsy: A very rare disorder characterized by an abnormally small head, mental retardation, spasticity and epilepsy.
• Microcephaly - pontocerebellar hypoplasia - dyskinesia: A rare, recessively inherited disorder characterized by an abnormally small brain and brainstem which manifests as a small head and mental retardation. The brain progressively degenerates.
• Microcephaly - seizures - mental retardation - heart disorders: A very rare syndrome characterized mainly by a small head, seizures, mental retardation and heart disorders.
• Microcephaly - sparse hair - mental retardation - seizures: A very rare disorder characterized by an abnormally small head, sparse hair, mental retardation and seizures.
• Microcephaly brain defect spasticity hypernatremia: A rare syndrome characterized mainly by a small head, brain defect, spasticity and high sodium level.
• Microcephaly micropenis convulsions: A syndrome which is characterized by the association of symptoms such as abnormal facial appearance, short stature and psychomotor retardation.
• Microcephaly with spastic quadriplegia: A very rare disorder characterized by an abnormally small head and quadriplegia.
• Microcephaly, corpus callosum dysgenesis and cleft lip-palate: A rare disorder characterized by a small head, abnormal brain development and a cleft lip and palate.
• Microcephaly, hiatal hernia and nephrotic syndrome: A rare genetic disorder primarily involving physical and developmental abnormalities as well as kidney disease.
• Microcephaly, mental retardation and tracheoesophageal fistula associated with features of Rett Syndrome: A rare syndrome characterized by the association of an abnormally small head, mental retardation and a tracheoesophageal fistula.
• Microencephaly: Small brain. The condition is often characterized by a small head and neurological problems. The type and severity of symptoms are variable.
• Microlissencephaly - micromelia: A rare syndrome characterized mainly by short arms, a brain defect called microlissencephaly, small head and early death.
• Microphthalmia - brain atrophy: A rare syndrome characterized by small eyes and degeneration of brain tissue which causes various abnormalities such as mental retardation. Usually the infant is relatively normal for a number of months after birth followed by rapid loss of previous acquired skills due to degeneration of the white matter of the brain.
• Microphthalmia - mental deficiency: A very rare syndrome characterized mainly by small eyes and mental deficiency.
• Microphthalmia and mental deficiency: A very rare syndrome characterized mainly by small eyes and mental deficiency.
• Microphthalmia syndromic, type 10: A rare inherited syndrome characterized mainly by small eyes and wasting of brain tissue.
• Microphthalmia syndromic, type 5: A rare inherited syndrome characterized by small eyes and various other abnormalities. The symptoms are variable to some degree.
• Microphthalmia, syndromic 7: A rare genetic disorder characterized by eye and skin abnormalities involving irregular red streaks of skin on the head and neck.
• Mild citrullinemia: Citrullinemia is an inherited urea cycle disorder which causes toxic substances including ammonia to build up in the blood. There are two main subtypes of Citrullinemia (I and II) which are caused by different genetic abnormalities and result in different symptoms. Milder forms may present in childhood and rare late-onset forms (type II) may not cause symptoms until adulthood.
• Milkweed poisoning: The milkweed is a flowering herb which bears clusters of red, orange or yellow flowers. The plant contains chemicals (resinoids, cardiac glycosides) which are toxic if large quantities are ingested.
• Miller-Dieker syndrome: A rare genetic disorder characterized by a smooth brain surface. The condition occurs because of deletion of genetic material from the short arm of chromosome 17 ath a particular location (17p13.3).
• Minamata disease: Ingestion of seafood containing methylmercury can result in neurological toxicity symptoms.
• Mistletoe poisoning: The mistletoe is an evergreen shrub that tends to grow on tree branches. It produces white berries which contain amines. The berries can cause poisoning if eaten in large quantities. Eating more than 20 berries or 5 leaves is likely to cause symptoms and patients should seek medical attention. Reported poisoning usually occur from drinking teas or extracts made from the plant.
• Mitochondrial Parkinson's disease: A form of Parkinson's disease that seems to be linked to mitochondrial defects - mitochondria are the energy-producing components of body cells. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Mitochondrial diseases: Any of a group of mitochondrial disorders affecting cell metabolism and especially muscles.
• Mitochondrial diseases, clinically indefinite: An inherited biochemical disorder which can affect many body systems such as the skeleton, heart, brain and nervous system.
• Mitochondrial encephalomyopathy - aminoacidopathy: A very rare syndrome characterized mainly by muscle and brain disease and an amino acid disorder.
• Mitochondrial myopathy - lactic acidosis: A very rare syndrome characterized mainly by muscle disease and a metabolic disorder. The severity and progression of the disease is variable with some dying early in their second decade and others living longer.
• Mobius syndrome: Type of facial paralysis.
• Moebius syndrome 1: A very rare syndrome characterized mainly by facial paralysis due to problems with 6th and 7th nerve development (Moebius sequence) and ophthalmoplegia.
• Monkshood poisoning: Monkshood is a poisonous plant with distinctive flowers. The perennial plant is native to Europe but is also grown in parts of the US and is sometimes used as a medicinal herb.
• Monosomy 1p36: A rare chromosomal disorder where deletion of a portion of chromosome 1 causes various abnormalities such as heart problems, mental retardation, developmental delay, facial dysmorphism and short stature. The range and severity of symptoms is variable with some cases being relatively mild.
• Monosomy 20p: A rare chromosomal disorder where the short arm (p) of chromosome 20 is deleted resulting in various abnormalities. The type and severity of symptoms varies depending on the amount and exact location of the genetic material that is deleted.
• Morphine toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Motor and cognitive disorder due to sepiapterin reductase deficiency: A rare condition characterized by an enzyme deficiency (sepiapterin reductase) which results in motor and cognitive problems.
• Mount Reback syndrome: A rare inherited condition characterized by episodes of chorea (involuntary movements) which may be triggered by such things as hunger, tiredness, stress, coffee, alcohol and tobacco. Episodes may last for minutes or hours.
• Mountain Laurel poisoning: The mountain laurel is a large evergreen shrub which bears clusters of small flowers. The plant contains chemicals (andromedotoxin, arbutin) which can cause poisoning symptoms if eaten. The plant is considered highly toxic if ingested. The level of toxicity varies amongst species but it is unlikely that eating less than three leaves or flowers would cause symptoms.
• Mountain andromeda poisoning: The Mountain Andromeda is an evergreen flowering shrub bearing elongated clusters of white flowers. The leaves and flower nectar contain a chemical called andromedotoxin which is highly toxic. Ingesting the leaves or nectar can result in death as the plant is considered highly toxic.
• Mountain sickness: Symptoms caused by rapid ascent to a higher altitude as a result of a reduction in available oxygen. May occur in mountain climbers or those traveling in unpressurized planes. Symptoms may include dizziness, nausea, weakness, fatigue, insomnia, headache, irritability, breathlessness and euphoria. The elderly or those suffering from pulmonary or cardiac disorders may suffer pulmonary edema, cardiac arrest or prostration. Also called acute altitude sickness.
• Movement disorders: A disorder which affects ones ability to control their movements
• Movement symptoms: Changes to movement or motor abilities
• Mowat-Wilson syndrome: A very rare syndrome characterized mainly by mental retardation, a small head, characteristic facial appearance and various other abnormalities.
• MoyaMoya disease 1: A very rare disorder involving progressive blocked arteries at the base of the brain (basal ganglia). Type 1 is caused by a genetic defect on chromosome 3p26-p24.2.
• MoyaMoya disease 2: A very rare disorder involving progressive blocked arteries at the base of the brain (basal ganglia). Type 2 is caused by a genetic defect on chromosome 17q25.
• MoyaMoya disease 3: A very rare disorder involving progressive blocked arteries at the base of the brain (basal ganglia). Type 3 is caused by a genetic defect on chromosome 8q23.
• Moyamoya Syndrome: A very rare disorder involving progressive blocked arteries at the base of the brain (basal ganglia).
• Moyamoya disease: Brain blood vessel disorder.
• Mucolipidosis III: A rare metabolic disorder where deficiency of a particular enzyme leads to the buildup of mucopolysaccharides and mucolipids in the body which is harmful to the body and leads to premature death.
• Mucolipidosis type 1: An inherited metabolic disorder where a defect in the enzyme alpha-neuraminidase prevents glycoproteins being metabolized - a milder form of the condition than sialidosis type II.
• Mucolipidosis type 3 A: A rare inherited biochemical disorder involving the progressive accumulation of certain chemicals (glycoproteins and glycolipids) in body tissues due to deficiency of an enzyme (UDP-N-acetylglucosamine-I-phosphotransferase) needed to process it.
• Mucopolysaccharidosis 1: A rare inherited condition caused by the absence of certain lysosomal enzymes which are needed to break down mucopolysaccharides. Without these enzymes, mucopolysaccharides build up in various body organs and tissues which causes harmful effects. There are three subtypes of the condition: Hurler, Scheie and Hurler-Scheie with Hurler being the most severe and Scheie the mildest.
• Mucopolysaccharidosis II: Disorder of mucopolysaccharide metabolism in juveniles.
• Mucopolysaccharidosis Type III: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans). This occurs due to there being not enough of the enzyme called N-acetyl-alpha-glucosaminidase (B) which is needed to break down the mucopolysacharides. The mucopolysaccharides are then deposited in various tissues.
• Mucopolysaccharidosis type 2 Hunter syndrome- severe form: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) in various body tissues due to insufficient amounts of the enzyme (iduronidate 2-sulfatase) needed to break it down.
• Mucopolysaccharidosis type 3: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans). This occurs due to there being not enough of the enzyme called N-acetyl-alpha-glucosaminidase (B) which is needed to break down the mucopolysacharides. The mucopolysaccharides are then deposited in various tissues.
• Mucopolysaccharidosis type 6: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) in various body tissues due to insufficient amounts of the enzyme (Arylsulfatase ?) needed to break it down.
• Mucopolysaccharidosis type I Hurler syndrome: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) in various body tissues due to insufficient amounts of the enzyme (?-L-diuronidase) needed to break it down. There are three main sub-types of the disorder: Hurler - severe form, Scheie - mild form and Hurler/Scheie form which is intermediate.
• Mucopolysaccharidosis type I Hurler/Scheie syndrome: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) in various body tissues due to insufficient amounts of the enzyme (?-L-diuronidase) needed to break it down.
• Mucopolysaccharidosis type I Scheie syndrome: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans) in various body tissues due to insufficient amounts of the enzyme (?-L-iduronidase) needed to break it down.
• Muller-Barth-Menger syndrome: A rare disorder characterized by brain malformations, seizures, excessive hairiness and overlapping fingers.
• Multifocal ventricular premature beats: A form of abnormal heart rhythm that occurs in otherwise healthy individuals. Exertion or high emotions may trigger a fainting episode.
• Multiple Sclerosis: Autoimmune attack on spinal nerves causing diverse and varying neural problems.
• Multiple carboxylase deficiency, propionic acidemia: A disorder of fat metabolism where the body is unable to convert fat to energy due to the lack of a number of enzymes (carboxylases). Sufferers need to eat regularly to prevent symptoms. Symptoms are determined by the size and exact location of the tumor.
• Multiple epiphyseal dysplasia: A rare genetic disorder characterized by short stature and limb, joint and hip abnormalities which become evident from two to 10 years.
• Multiple myeloma: A rare malignant cancer that occurs in the bone marrow. More common in skull, spine, rib cage, pelvis and legs.
• Multiple system atrophy: A rare disorder where nerve degeneration causes progressive neurological problems involving the central and autonomic nervous system. The rate of progression is variable.
• Multiple system atrophy (MSA) with orthostatic hypotension: A progressive neurological disorder involving the central and autonomic nervous system.
• Muscle Hypertonia: Abnormally increased muscle tone. The condition can be caused by overactive reflexes (spasticity), constant muscle contractions or upper motor neuron damage.
• Muscle contractions: When a muscle is shortened in use
• Muscle phosphoglycerate kinase deficiency: An inherited genetic muscle disease where an enzyme deficiency (phosphoglycerate kinase) affects the normal processes that convert carbohydrates from food into energy.
• Muscle rigidity: The occurrence of resistance to passively moving a muscle
• Muscle spasm: The occurrence of a sudden prolonged and uncontrolled contraction of a muscle
• Muscle spasms: Involuntary movement or contraction of muscles without full control
• Muscle stiffness: A difficulty in stretching a muscle
• Muscle strain: Damage to a muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Muscle symptoms: Symptoms affecting the muscles of the body
• Muscle twitch: Small muscle spasms
• Muscular dystrophy - white matter spongiosis: A very rare syndrome characterized mainly by muscle problems, seizures and mental retardation.
• Muscular dystrophy, limb-girdle, autosomal recessive, type 2K: An autosomal recessive form of limb-girdle muscular dystrophy where muscle weakness and atrophy is caused by mutations in the gene for O-mannosyltransferase-1.
• Mustard tree poisoning: The mustard tree is found in various parts of America and contains nicotine. Ingestion of the plant can cause various symptoms. The leaves of the plant is sometimes smoked for its effects but it can result in death.
• Myasthenia Gravis: An autoimmune disorder which interferes with nerve impulses to muscles and hence results in weak, easily fatigued muscles.
• Myelinopathies: Disorders where the protective myelin sheath around nerves is destroyed which affects the transmission of nerve signals. The severity of symptoms is determined by the degree of myelin destruction and the nerves affected. Multiple sclerosis is an example of a myelin sheath disease.
• Myelitis: Spinal cord inflammation.
• Myhre Syndrome: A very rare inherited disorder characterized by retarded growth, mental retardation, bone abnormalities and distinctive facial features.
• Myhre-Ruvalcaba-Graham syndrome: A rare disorder characterized by mental retardation, retarded growth before and after birth, early-onset deafness and facial anomalies as well as other problems.
• Myoclonic dystonia: A very rare inherited syndrome characterized mainly by mild dystonia and myoclonic jerks that occur mainly in the arms, neck and trunk. Alcohol makes the condition worse. Psychiatric disorders are also often present.
• Myoclonic epilepsy benign, adult, familial: A rare familial disorder characterized by muscle jerking and seizures in adults. The disorder is not progressive and is fairly harmless with only minor fine motor control problems.
• Myoclonic progressive familial epilepsy: A progressive familial disorder involving the central nervous system and manifesting as epilepsy and myoclonus (muscle contractions) that worsen over time.
• Myoclonus: Contraction of a single muscle or muscle groups.
• Myoclonus hereditary - progressive distal muscular atrophy: A rare inherited disorder characterized by myoclonus and progressive distal muscle weakness and wasting.
• Myoclonus progressive epilepsy of Unverricht and Lundborg: A rare genetic brain disease characterized by convulsions which become progressively worse. Modern treatment can have a big effect on the prognosis.
• Myoclonus with epilepsy with ragged red fibers: A rare disorder of mitochondrial metabolism characterized by myoclonic epilepsy and ragged-red muscle fibers. Mitochondria are the part of the body cells that produce energy.
• Myoclonus, cerebellar ataxia, deafness: A very rare inherited condition characterized by progressive deafness followed by neurological symptoms such as seizures and incoordinated movements.
• Myoclonus-ataxia: A rare syndrome characterized mainly by myoclonus and loss of movement coordination.
• Myokymia: A form of involuntary muscle movement that is best seen by rippling of the skin.
• Myopathy - growth and mental retardation - hypospadias: A very rare syndrome characterized mainly by muscle disease, retarded growth, mental retardation and abnormally placed urethral opening.
• Myopathy - growth delay - mental retardation - hypospadias: A very rare syndrome characterized mainly by muscle disease, retarded growth, mental retardation and abnormally placed urethral opening.
• Myopathy, Congenital, Batten Turner Type: An extremely rare, benign form of congenital muscular dystrophy involving relatively minor muscle wasting. The condition progresses slowly until adulthood.
• Myotonic Dystrophy: An inherited disorder characterized by progressive muscle weakness and wasting as well as eye defects, heart abnormalities and other anomalies. The severity of the condition is greatly variable. There are two type of myotonic dystrophy with type 1 being more severe than type 2.
• N syndrome: A rare genetic disorder characterized by mental and physical retardation, eye abnormalities, retarded growth, hearing impairment and a high risk of developing cancers, particularly leukemia. It is an extremely rare condition originally described in two brothers.
• N-acetyl glutamate synthetase deficiency: A rare inherited urea cycle disorder where a lack of a certain enzyme (N-acetyl glutamate synthetase) results in accumulation of ammonia in the blood as it can't be broken down and removed through the urine.
• N-acetyl-alpha-D-galactosaminidase: A very rare enzyme deficiency (N-acetyl-alpha-D-galactosaminidase) which can occur in three forms: type I (infantile-onset neuroaxonal dystrophy), type II or Kanzaki disease (adult-onset) and type III (mild or moderate form).
• N-acetyl-alpha-glucosaminidase sulfamidase deficiency: A rare inherited biochemical disorder characterized by the accumulation of mucopolysaccharides (glycosaminoglycans). This occurs due to there being not enough of the enzyme called N-acetyl-alpha-glucosaminidase sulfamidase which is needed to break down the mucopolysacharides. The mucopolysaccharides are then deposited in various tissues.
• NADH CoQ reductase, deficiency of: A rare genetic defect where an enzyme deficiency (NADH CoQ) disrupts cellular processes and causes various organic acid disorders. Any of a variety of the components of the enzyme may be missing or defective and hence the clinical presentation and severity may vary. Presentation may range from infantile death to various disorders neurodegenerative disorders such as Leigh's disease, Parkinson's disease and cardiomyopathy.
• Naegleria: Rare bacterial infection from contaminated water
• Nail-Patella Syndrome: A rare inherited disorder characterized by small or absent kneecap and ridged and/or absent nails as well as other abnormalities
• Nakajo-Nishimura syndrome: A rare disorder involving muscle degeneration, loss of skin fat and impaired immune functioning.
• Narcolepsy: Narcolepsy is characterized by the classic tetrad of excessive daytime sleepiness, cataplexy, hypnagogic hallucinations, and sleep paralysis.
• Narcotic addiction: An uncontrollable desire to use narcotics on a regular basis. The drug may be used as a therapeutic medication for various conditions but it's use is also frequently abused. Examples of narcotic drugs include heroin, morphine, Demerol and codeine. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
• Neck Arthritis: Degenerative arthritic changes in the neck causing pain and loss of function; may be due to age-related degenerative change (osteoarthritis) or due to autoimmune disease (rheumatoid arthritis)
• Neck Spasm: Contraction of muscles in the neck causing a spasm.
• Neck stiffness: The feeling of neck stiffness
• Negative rheumatoid factor polyarthritis: A form of rheumatoid arthritis which doesn't involves the presence of rheumatoid factor in the blood. More than one joint is involved.
• Nemaline myopathy 6: A very rare inherited muscle disorder and is characterized by muscle weakness caused by the presence of nemaline rods in the muscle tissue which affects its function. There are at least 7 different subtypes of nemaline myopathy, each with a different genetic defect. The severity of the symptoms may vary greatly even among patients within a particular subtype of the disorder. Type 6 is caused by a defect on chromosome 15q. Type 4 was slowly progressive but wheelchair dependency does not eventuate.
• Neonatal ALD: Progressive form of ALD in newborns.
• Neonatal bacterial meningitis: Bacterial meningitis that occurs in an infant under 3 months of age. Bacterial meningitis is a bacterial brain infection.
• Neonatal tetanus: Muscle tetanus of the very young infant
• Nephronophthisis familial, adult - spastic quadriparesis: A very rare syndrome characterized mainly by progressive kidney destruction and spasticity and weakness of arms and legs.
• Nephronophtisis familial, adult form - spastic quadriparesia: A rare familial condition characterized by kidney disease and spastic quadriparesis.
• Nephrosis neuronal dysmigration Syndrome: A rare genetic disorder primarily involving physical and developmental abnormalities as well as kidney disease. The type and severity of symptoms that can occur is variable.
• Nerve cancer: Any cancer that affects the nerves
• Nerve sheath neoplasm: Tumors that develop from the protective sheath surrounding nerves. There are two types of nerve sheath tumors: schwannomas and neurofibromas. They most often occur around the spinal cord. Symptoms are determined by the size and exact location of the tumor.
• Neuhauser-Eichner-Opitz syndrome: A very rare form of brain disease which causes recurring bouts of symptoms that may last from days to weeks.
• Neuraminidase deficiency: A rare inherited disorder involving an enzyme (neuraminidase and beta-galactosidase) deficiency which results in a build up of glycoproteins (sialyloligosaccharides) in the urine.
• Neuraminidase deficiency, type II, juvenile form: A rare inherited disorder involving an enzyme (neuraminidase and beta-galactosidase) deficiency which results in a build up of glycoproteins (sialyloligosaccharides) in the urine. The juvenile form of the condition is less severe than the infantile form which causes death within months of birth.
• Neuroaxonal dystrophy - renal tubular acidosis: A very rare syndrome characterized mainly by muscle and kidney abnormalities.
• Neuroaxonal dystrophy, infantile: An inherited disorder involving progressive muscular and coordination problems, impaired brain function and speech and vision impairment.
• Neurocutaneous melanosis: A rare genetic disorder characterized by melanosis of the skin and central nervous system deterioration.
• Neurocysticercosis: Brain/CNS infection with the tapeworm Cysticercosis
• Neurodegenerative syndrome, X-linked, Bertini type: A very rare neurodegenerative disorder characterized mainly by reduced muscle tone, ataxia, recurring bronchopulmonary infections and psychomotor deficit. The disorder is X-linked and thus only males suffer the full extent of the symptoms whereas female carriers may be asymptomatic or have only mild symptoms.
• Neurodegenerative syndrome, X-linked, Hamel type: A very rare neurodegenerative disorder characterized mainly by mental retardation, blindness, convulsions, spasticity and early death. The disorder is X-linked and thus only males suffer the full extent of the symptoms whereas female carriers may be asymptomatic or have only mild symptoms.
• Neuroectodermal tumor, primitive: A very rare type of tumor that occurs in children under the age of ten. It is very aggressive and has a poor prognosis with less than half of patients surviving. The tumor originates from primitive nerve cells in the brain (CNS PNET) or other parts of the body (peripheral PNET). CNS tumors can be further divided into infratentorial tumors (e.g. medulloblastoma) or supratentorial tumors. The tumors usually cause no symptoms in the early stages and the symptoms that do develop will vary depending on the exact location and size of the tumor.
• Neuroectodermal tumors primitive: A type of brain tumor that consists of small round cells and is believed to originate from primitive nerve cells in the brain. Symptoms are determined by the exact location of the tumor.
• Neurofaciodigitorenal syndrome: A very rare syndrome characterized mainly by
• Neuroferritinopathy: A rare disorder where a genetic mutation results in a neurological disease resulting from abnormal iron and ferritin deposits in the brain.
• Neuroferritinopathy (adult-onset basal ganglia disease): A rare disorder where a genetic mutation results in a neurological disease resulting from abnormal iron and ferritin deposits in the brain.
• Neurofibromatosis Type 1 (NF-1): Neurofibromatosis Type 1 is a genetic disorder often leading to the development of nerve tumors. The condition is also characterized by skin pigmentation abnormalities.
• Neurofibromatosis syndrome: A rare genetic disorder characterized by areas of increased and decreased skin pigmentation and the development of many non-cancerous nerve and skin tumors some of which may eventually become malignant.
• Neurofibromatosis syndrome Type II: A rare genetic disorder characterized by areas of increased and decreased skin pigmentation, acoustic neuromas and the development of many noncancerous nerve and skin tumors some of which may eventually become malignant - it is a more severe form of type I neurofibromatosis.
• Neurofibromatosis-1: Genetic disorder often leading to tumors on nerves.
• Neuroleptic malignant syndrome: A severe, potentially fatal reaction to antipsychotic drugs.
• Neuronal Migration Disorders: Group of disorders caused by abnormal growth of nerves in the brain and head.
• Neuronal intranuclear hyaline inclusion disease: A very rare syndrome characterized mainly by muscle problems and seizures. The disorder results from the presence of hyaline compounds inside nerve cells.
• Neuronal intranuclear inclusion disease: A very rare syndrome characterized mainly by muscle and nerve degeneration.
• Neuropathy - ataxia - retinitis pigmentosa: A rare inherited disorder where defects in the energy producing part of cells affects the nervous system and causes symptoms such as muscle and vision problems. Severity and rang of symptoms are variable.
• Neuropathy ataxia and retinis pigmentosa: A rare inherited disorder where defects in the energy producing part of cells affects the nervous system and causes symptoms such as muscle and vision problems. Severity and rang of symptoms are variable.
• Neuropathy sensory spastic paraplegia: A very rare syndrome characterized mainly by sensory nerve degeneration and spastic paraplegia. The extremities of the hands and feet have reduced pain sensation and disfiguring ulcers tend to develop.
• Neurosarcoidosis: A rare disorder involving sarcoidosis of the nervous system. Sarcoidosis is a chronic inflammatory disorder that can affect virtually any part of the body. Neurosarcoidosis involves inflammation and abnormal deposits in parts of the nervous system including the brain and spinal cord which affects their functioning. Symptoms may be sudden and severe or may be mild and progress slowly. Symptoms are determined by the degree of nerve involvement.
• Neurosyphilis: Syphilis affecting the nervous system.
• Neurosyphilis - general paresis: A complication of untreated syphilis where the infection invades the brain cells and causes a range of neurological symptoms. The condition is progressive and life-threatening.
• Neurosyphilis - meningovascular: A complication of untreated syphilis where the infection invades the central nervous system and causes cranial nerve palsies and pupil abnormalities.
• Neurosyphilis - tabes dorsalis: A complication of untreated syphilis where the infection invades the spinal cord and progressively impairs muscle function and nerve damage may also occur. This form of the condition is progressive and life-threatening.
• Neurotoxic shellfish poisoning: Rare food poisoning from eating contaminated shellfish
• Nevus sebaceous of Jadassohn: A rare genetic neurocutaneous disorder characterized by epidermal nevi associated with central nervous and skeletal system abnormalities.
• Nicolaides-Baraitser syndrome: A very rare syndrome characterized mainly by short stature, reduced hair, short fingers, epilepsy and abnormal bone development.
• Nielsen-Jacobs syndrome: A rare condition where damage to the part of the brain called the cingulated gyri results in agnosia, apraxia and aphasia. The cingulated gyri is responsible for emotions, memory, learning and processing skills.
• Niemann-Pick disease: A rare inherited biochemical disorder involving the deficiency of an enzyme (acid sphingomyelinase) needed to break down certain lipids which results in an accumulation of these lipids in the body.
• Niemann-Pick disease, type C1: Niemann-Pick disease is an inherited metabolic disorder where lipids are not able to be metabolized adequately and hence build up and cause damage in various parts of the body such as the spleen, liver, lungs, bone marrow and brain. The different types of the disease are due to different genetic mutations. Type C is a juvenile or subacute form of the condition which usually starts during childhood and survival into adulthood is possible.
• Niemann-Pick disease, type C2: Niemann-Pick disease is an inherited metabolic disorder where lipids are not able to be metabolized adequately and hence build up and cause damage in various parts of the body such as the spleen, liver, lungs, bone marrow and brain. The different types of the disease are due to different genetic mutations. Type C is a juvenile or subacute form of the condition which usually starts during childhood and survival into adulthood is possible.
• Night blindness - skeletal anomalies - unusual facies: A very rare syndrome characterized mainly by night blindness, a distinctive face and skeletal abnormalities.
• Nipah virus encephalitis: Inflammation of the brain caused by the Nipah virus which can infect pigs and humans so transmission usually occurs through contact with pigs.
• Nocardiosis: A rare infectious disease caused by the bacteria Nocardia asteroides which primarily affects the lung but may also involve the brain, soft tissues and other organs.
• Non-diarrheal (D-) HUS syndrome: A rare condition characterized by hemolytic anemia, thrombocytopenia and kidney failure that is not associated with diarrhea which means that it is not a result of bacterial gastroenteritis. This form of hemolytic uremic syndrome may be caused by kidney transplants, certain drugs (cyclosporine, tacrolimus, cytotoxic drugs), pregnancy, malignancy, HIV, non-diarrheal bacterial infections, immunological conditions or it may be inherited or in some cases there is no obvious cause (idiopathic).
• Non-ketotic hyperglycinemia: A rare disorder of amino acid metabolism where glycine and proline are unable to be metabolized properly due to defects in the glycine cleavage system.
• Non-lissencephalic cortical dysplasia: A brain development abnormality characterized by the development of small brain convolutions that generally cause mental retardation. Symptoms depend on the location and extent of the abnormality.
• Norman-Roberts lissencephaly syndrome: A very rare form of the brain formation disorder called lissencephaly where the brain surface is abnormally smooth rather than convoluted.
• Normokalemic periodic paralysis: A rare disorder characterized by periods of muscle weakness that is not associated with abnormal potassium levels.
• Nyssen-Van Bogaert syndrome: An adult form of an inherited biochemical disorder involving a deficiency of an enzyme called cerebroside sulfatase. The enzyme deficiency causes cerebroside sulfate to build up within the body and causes damage to the nervous system including the brain.
• Nyssen-Van Bogaert-Meyer syndrome: A very rare genetic disorder characterized by progressive degeneration of the central nervous system.
• OFD syndrome type IX: A rare genetic disorder characterized by oral frenula, oral clefts, underdeveloped nose flaps and finger and retinal abnormalities.
• Oculo cerebro acral syndrome: A very rare syndrome characterized mainly by eye, brain, ear and limb abnormalities.
• Oculocerebral hypopigmentation syndrome, type Preus: A very rare syndrome characterized mainly by eye, brain and pigmentation abnormalities.
• Oculocerebral syndrome with hypopigmentation: A rare inherited disorder involving lack of pigmentation and eye and brain defects caused by central nervous system abnormalities.
• Oculodentoosseous dysplasia dominant: A very rare dominantly inherited syndrome characterized mainly by eye, tooth and finger abnormalities.
• Oculopalatocerebral syndrome: A rare inherited syndrome characterized mainly by short stature, small head, mental retardation, cleft palate and eye problems.
• Ohtahara Syndrome: A very rare syndrome characterized mainly by epilepsy that starts within a month of birth.
• Olecranon bursitis: Inflammation of the fluid-filled sac at the pointy end of the elbow. The inflammation can result from trauma to the elbow, infection or chronic injury which can result from frequently resting on the elbows.
• Oligodendroglioma: Slow-growing brain tumor
• Olivopontocerebellar Atrophy: A group of diseases progressive degeneration occurs in a particular area of the brain (olivopontocerebellar area) which results in various neurological symptoms.
• Olivopontocerebellar Atrophy, Hereditary: A group of rare, inherited, neurodegenerative conditions characterized by progressive problems with balance, coordination of voluntary movements and speech. The rate of progression varies amongst patients.
• Olivopontocerebellar atrophy I: A disorder where degeneration of certain parts of the brain and spinal cord and results in symptoms such as muscle problems, chorea and speech disturbance.
• Olivopontocerebellar atrophy type 3: A disorder where degeneration of certain parts of the brain and spinal cord results in symptoms such as blindness, tremor, speech problems and ataxia.
• Olivopontocerebellar atrophy type IV: A rare group of disorders caused by degeneration of certain specific parts of the brain (cerebellum, pons, inferior olives) and resulting in symptoms such as balance problems, loss of coordination and difficulties with speaking.
• Olivopontocerebellar atrophy, type V: A disorder where degeneration of certain parts of the brain results in symptoms such as tremor, ataxia and mental deterioration.
• Omodysplasia type 1: A very rare syndrome characterized mainly by extremely short stature due to short bones in the arms and legs.
• Onychodystrophy - deafness: A very rare inherited disorder involving deafness (D), onychodystrophy (O - nail malformation), osteodystrophy (O - bone malformation) and mental retardation (R).
• Opioid toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Opium overdose: Opium is an illegal recreational drug. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Opsoclonus Myoclonus: Condition with involuntary muscle and eye movement.
• Optic atrophy 2: An early onset form of progressive optic nerve dysfunction which results in impaired vision. Neurological symptoms are usually present and vision loss progresses very slowly. The disorder is caused by a genetic defect (Xp11.4-p11.21).
• Organic acidemia: High blood levels of organic acids which is caused by abnormal protein metabolism. Maple syrup urine disease and propionic academia are examples of organic acidemias. Deficiency of certain metabolic enzymes one of the main causes of organic academia.
• Organophosphate insecticide poisoning: Excessive ingestion of organophosphate insecticides. The type and severity of symptoms varies depending on the exact poison ingested and the quantity.
• Oriental Hornet poisoning: The Oriental hornet can deliver a venomous sting which can result in serious and even life-threatening symptoms. Allergies to the venom are also a possible life-threatening consequence. Multiple stings increase the severity of symptoms.
• Ornithine Transcarbamylase Deficiency: A rare metabolic disorder where a deficiency of the enzyme ornithine transcarbamylase means that nitrogen isn't removed from the body and builds up in the blood in the form of ammonia.
• Ornithine transcarbamylase (OTC) Deficiency: A rare metabolic disorder where a deficiency of the enzyme ornithine transcarbamylase means that nitrogen isn't removed from the body and builds up in the blood in the form of ammonia.
• Orofaciodigital syndrome type1: A rare genetic disorder characterized by variable malformations of the face, digits and inside the mouth. Type 1 is distinguished from the other types of this condition by the presence of polycystic kidneys and a X-linked dominant inheritance.
• Orofaciodigital syndrome, type 3: A rare genetic disorder characterized by oral frenula, oral clefts, underdeveloped nose flaps and finger, teeth and eye abnormalities.
• Osler's disease: Genetic disease causing multiple teleangiectasias
• Osteitis: Inflammation of bone.
• Osteoarthritis: A form of degenerative arthritis due to chronic degeneration
• Osteoarthritis, Hip: A common degenerative hip joint disorder that tends to affect older people. The main symptom is pain.
• Osteochondrodysplatic dwarfism - deafness - retinitis pigmentosa: A rare syndrome characterized by extreme dwarfism, deafness, progressive scoliosis and retinal pigment anomalies.
• Osteopetrosis lethal: A severe, lethal form of the brittle bone condition called osteopetrosis.
• Ovarioleukodystrophy: A rare syndrome characterized by ovarian failure and degeneration of the brain white matter which causes mental and motor problems.
• Oxycontin overdose: Oxycontin is a prescription drug mainly used to treat pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• PANDAS: A rare disorder characterized by the association of a tic disorder or OCD (obsessive-compulsive disorder) with a streptococcal infection and neuropsychiatric symptoms. The symptoms can start suddenly and recovery is slow with frequent relapses. It is believed that the infection affects a part of the brain that is involved with movement.
• PEHO-like syndrome: A rare birth disorder characterized by brain anomalies due to prenatal ischemia. Clinically it is the same as true PEHO syndrome but differs in the type of brain abnormality involved. True PEHO syndrome is inherited and tends to involve an underdeveloped cerebellum which is absent in PEHO-like syndrome.
• PHACE association: A very rare syndrome characterized mainly by a brain malformation (involving the posterior fossa), large facial hemangioma and eye, heart and artery anomalies.
• PIBIDS syndrome: A rare inherited skin disorder characterized by photosensitivity (P), red, dry, scaly skin (I - ichthyosis), brittle hair (B), impaired physical and mental development (I), decreased fertility (D) and short stature (S). It is the same as IBIDS syndrome but involves photosensitivity.
• Pachygyria: A condition which is characterized by the presence of thick convolutions of the cerebral cortex
• Pachygyria - mental retardation - seizures: A very rare syndrome characterized by mental retardation and seizures caused by abnormal structural brain development called pachygyria.
• Pachygyria, frontotemporal: A recessively inherited disorder characterized by abnormal brain development (pachygyria), mental retardation and various other abnormalities.
• Paget's disease of bone: A chronic, slowly progressing bone disorder where the bone is destroyed rapidly and replaced by abnormal bone which is dense and fragile.
• Paine syndrome: A rare inherited disorder characterized by a small head, mental and physical retardation and vision and movement problems.
• Palindromic rheumatism: A rare disorder involving periodic inflammation in and around joints. Eventually, rheumatoid arthritis may develop if the condition persists.
• Pallidopyramidal syndrome: A rare disorder characterized by pyramidal signs and parkinsonism caused by a degeneration of the pyramidal tract and the part of the brain called the pallidum.
• Pallister Killian Mosaic Syndrome: Pallister Killian Mosaic Syndrome is a very rare disorder genetic disorder involving abnormalities in chromosome 12. The severity of symptoms is variable and tends to include a wide range of defects and abnormalities.
• Pallister Mosaic Syndrome Tetrasomy 12p: A very rare disorder genetic disorder involving abnormalities in chromosome 12. The severity of symptoms is variable and tends to include a wide range of defects and abnormalities.
• Palytoxin poisoning: Palytoxin is a marine toxin found in sea anemones and certain crabs and fish (e.g. triggerfish). The toxin is extremely potent and death is common in patients who ingest contaminated fish.
• Paragonimiases - lung infection: Infection by a parasitic worm, Paragonimus westermani, which are a type of lung fluke which invade the lungs and other organs where they cause problems. Infection occurs through eating freshwater crabs and crayfish which have not been cooked sufficiently.
• Paralytic shellfish poisoning: Rare food poisoning from eating contaminated shellfish
• Paramyotonia congenita: A rare inherited muscle condition where muscles are difficult to relax following contraction. The main muscles affected are in the face, neck, arms and hands. Repetition of movements makes the muscle stiffness become progressively worse. The condition is not progressive and exposure to cold can trigger symptoms.
• Paraneoplastic limbic encephalitis: Limbic encephalitis is an inflammation of the limbic system which is the part of the brain responsible for basic autonomic functions. In the paraneoplastic type, the inflammation is caused by cancers such as small cell lung cancer.
• Paresis: Muscle weakness due to disease of the nervous system.
• Parkinson disease 10: A slow progressing form of Parkinson's disease caused by a mutation on chromosome 1p.
• Parkinson disease 10 (PARK10): Type 10 Parkinson disease is linked to a genetic mutation on chromosome 1p32. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 11: A form of Parkinson's disease caused by a mutation on chromosome 2q36-q37.
• Parkinson disease 11 (PARK11): Type 11 Parkinson disease is linked to a genetic mutation on chromosome 2q21.2. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 12: A X-linked form of Parkinson's disease caused by a mutation on chromosome Xq21-q25.
• Parkinson disease 12 (PARK12): Type 12 Parkinson disease is linked to a genetic mutation on chromosome Xq21-q25. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 13: A form of Parkinson's disease caused by a mutation in the serine protease gene on chromosome 2p12.
• Parkinson disease 13 (PARK13): Type 13 Parkinson disease is linked to a genetic mutation on chromosome 2p12. This form of the condition tends to progress slowly. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 2, autosomal recessive juvenile (PARK2): Type 2 Parkinson disease is juvenile form of the condition and is linked to a genetic mutation on chromosome 6q25.2-q27. The condition may be inherited in a recessive manner and symptoms tend to be milder following sleep. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 3: A genetic form of Parkinson disease which involves progressive degeneration of the central nervous system.
• Parkinson disease 3, autosomal dominant Lewy body (PARK3): Type 3 Parkinson disease is linked to a genetic mutation on chromosome 2p13. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 4, autosomal dominant Lewy body (PARK4): Type 4 Parkinson disease is linked to a genetic mutation on chromosome 4q21. This form of the condition tends to start around the age of 45 years and progresses rapidly. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 4, autosomal dominant, Lewy body: A form of Parkinson's disease caused by a triplication of the alpha-synuclein gene on chromosome 4q21.
• Parkinson disease 5 (PARK5): Type 5 Parkinson disease is linked to a genetic mutation on chromosome 4p14. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 6, autosomal recessive early-onset (PARK6): Type 6 Parkinson disease is an early-onset form of the condition and is linked to a genetic mutation on the PINK1 gene on chromosome 1p36. The condition may be inherited in a recessive manner and symptoms tend to fluctuate during the day. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 6, autosomal recessive, recessive early-onset: A slow progressing form of Parkinson's disease caused by a mutation in the PINK1 gene on chromosome 1p36.
• Parkinson disease 7, autosomal recessive early-onset (PARK7): Type 7 Parkinson disease is linked to a genetic mutation in the DJ1 gene on chromosome 1p36. This form of the condition tends to start before the age of 40 years and progresses slowly. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 7, autosomal recessive, early-onset: A recessively inherited form of Parkinson's disease caused by a mutation in the DJ1 gene on chromosome 1p36. Disease progression tends to be slow.
• Parkinson disease 8: A form of Parkinson's disease caused by a mutation in the dardarin gene on chromosome 12q12.
• Parkinson disease 8 (PARK8): Type 8 Parkinson disease is linked to a genetic mutation on chromosome 1p32. This form of the condition tends to progress slowly. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease 9: A genetic form of Parkinson disease (a progressive degeneration of the central nervous system) that progresses rapidly once it starts. Dementia, spasticity and eye movement problems are also characteristic of this form of Parkinson disease.
• Parkinson disease 9 (PARK9): Type 9 Parkinson disease is linked to a mutation in the ATP13A2 gene on chromosome 1p36. This condition progresses rapidly and usually starts during the second decade of life. Dementia, eye movement problems and wasting of the brain tissue occur in addition to the typical symptoms of Parkinson's disease. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease, familial, Type 1: A form of Parkinson's disease involving a mutation in the alpha-synuclein gene on chromosome 4q21.
• Parkinson disease, familial, type 1 (PARK1): Type 1 familial Parkinson disease is linked to a genetic mutation on chromosome 4q21. Parkinson's disease is a chronic, progressive, degenerative brain disorder characterized by tremors, muscle rigidity and slowed movements.
• Parkinson disease, juvenile, autosomal recessive: A rare form of Parkinson disease that tends to occur by the age of 40 and is inherited in a recessive manner. Symptoms tend to be more severe during the day rather than the night.
• Parkinson's Disease: Degenerative brain condition characterised by tremor.
• Parkinson's disease dementia, familial: A condition characterized by the association of parkinsonism with dementia. Eye muscle weakness and pyramidal signs also develop in the early stage of the disease.
• Parkinsonism, early onset with mental retardation: An early onset form of Parkinson's disease as well as mental retardation.
• Parkinsonism, early-onset - mental retardation: An early onset form of Parkinson's disease as well as mental retardation.
• Paroxysmal coughing: episodic cough
• Parrotfish poisoning (Palytoxin): Palytoxin is a marine toxin found in some parrotfish from the Philippines and Singapore region. The toxin is extremely potent and death is common in patients who ingest contaminated parrotfish.
• Parry Romberg Syndrome: Wasting away of one side of the face.
• Partial agenesis of corpus callosum: A rare birth defect where part of the corpus callosum is absent. The corpus callosum is the area that connects the two main halves of the brain (cerebral hemispheres). Severity of symptoms is determined by how much of the structure is missing. Mild cases tend to involve headaches, seizures and speech problems which don't appear for years.
• Partial lissencephaly: A rare birth defect where the a part of the brain's surface is abnormally smooth. Severity of symptoms is determined by the extent of the defect.
• Partial seizure: A partial seizure is an electrical disturbance that originates in only one part of the brain and resulting in symptoms related to the body functions or parts that are controlled by that part of the brain. During a partial seizure movement, sensations, feelings or emotions may be affected. Partial seizures may spread to other parts of the brain and are then called generalized seizures. Partial seizures where the patient stays conscious are called simple partial seizures. If the patient loses consciousness then the seizure is called a complex partial seizure. Epilepsy is usually a partial seizure.
• Partington X-linked mental retardation syndrome: A rare genetic syndrome involving mental retardation, abnormal movements, seizures and ataxia. The syndrome is inherited in a X-linked manner which means that females are carriers but only males display the symptoms.
• Pashayan syndrome: A rare inherited condition characterized mainly by eye, nose and facial malformations.
• Patterson pseudoleprechaunism syndrome: A very rare disorder characterized by excessive pigmentation, looks skin, unusual face, several mental retardation and bone abnormalities.
• Peach seed poisoning: Peach seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the seed remains intact and therefore poisoning usually occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual. Most parts of the peach plant contain the toxic chemical with the highest concentration in young leaves.
• Pediatric AIDS: Pediatric AIDS is an immune system disease in infants or children caused by the HIV virus. AIDS is a term used when a person infected with HIV has a CD4+ T cell count below 200 or 14% of lymphocytes. AIDS is an advanced form of HIV. To be classified as AIDS the person must also have an AIDS-related condition such as opportunistic infections. Symptoms in children are similar to those of an adult but their susceptibility to various AIDS-related conditions varies e.g. children are less susceptible to Kaposi sarcoma, taxoplasmosis and cryptococcosis than adults.
• Pelizaeus-Merzbacher Disease: Rare brain myelin disorder.
• Pelizaeus-Merzbacher brain sclerosis: A degenerative brain disease involving deterioration of the brain white matter which affects motor and mental functioning.
• Pelizaeus-Merzbacher disease, adult onset: A degenerative brain disease involving deterioration of the brain white matter which affects motor and mental functioning. The adult onset form starts later in life.
• Pelvic dysplasia arthrogryposis of lower limbs: A very rare syndrome characterized mainly by pelvic anomalies and joint contractures involving the legs.
• Penfield syndrome: A rare disorder where a tumor pushes against the hypothalamus and causes seizures as well as a variety of other symptoms.
• Peptidic growth factors deficiency: A very rare syndrome characterized mainly by diabetes, skin abnormalities, small jaw and muscle contractures.
• Perinatal hypophosphatasia: An inherited bone disorder due to an inborn error of metabolism characterized by a severe deficiency of alkaline phosphate which results in death before or within days of birth.
• Perinatal-lethal Gaucher disease: A disorder caused by a deficiency of an enzyme called glucocerebrosidase. The foetal form is one of several forms of Gaucher disease and is the rarest. The fetal form causes death before birth or soon after.
• Periodic hyperlysinemia: A rare genetic disorder where the body lacks enzymes to metabolize lysine which then causes a harmful builds up of lysine and ammonia in the body.
• Perisylvian syndrome: A very rare nerve disorder characterized by weakness or paralysis of face, jaw tongue and throat muscles. Other symptoms include seizures, delayed development and mental retardation.
• Periventricular laminar heterotopia: A rare inherited disorder where a part of the brain tissue is misplaced during development. More specifically, brain tissue is abnormally located in the lining of the brain ventricles.
• Pernettya poisoning: Pernettya is a shrubby plant found mainly in the southern parts of the world. It is often utilized as an ornamental shrub. The leaves, berries and flower nectar contain a chemical called andromedotoxin which can cause symptoms if eaten. Serious cases of poisoning can result in death.
• Pernicious anemia: A megaloblastic anaemia due to malabsorption of the vitamin B12
• Peroxisomal bifunctional enzyme deficiency: A rare disorder involving abnormal steroid metabolism due to an enzyme 17-beta-hydroxysteroid dehydrogenase 4) deficiency. The symptoms which make the condition appear very similar to another condition called neonatal adrenoleukodystrophy.
• Peroxisomal defects: A group of metabolic disorders caused by genetic anomalies resulting in dysfunctional peroxisomes. Peroxisomes are found in cells in the body and are involved in functions such as metabolizing certain fatty acids and producing bile acid. Examples of condition involving peroxisomal defects includes Zellweger syndrome and adrenoleukodystrophy. The range and severity of symptoms vary greatly depending on the particular condition involved.
• Peroxisome biogenesis disorders: A group of inherited disorders involving the absence or dysfunction of one or more peroxisomal enzymes. Peroxisomes are numerous tiny organs within the cell which are involved in a large number of the body's biochemical reactions.
• Persian violet poisoning: The persian violet is a small flowering herb which bears red, pink or white scented flowers. It is often used as an ornamental indoor or outdoor plant or in floral arrangements. If large quantities of the root (rhizome) of the plant are eaten, poisoning symptoms can result. Skin contact with the roots can result in minor skin irritation. Poisoning is unlikely due to the bitter taste of the root.
• Pervasive developmental disorder: Group of developmental disorders often recognized before 3 years of age.
• Pfeiffer-Palm-Teller syndrome: A rare disorder characterized by facial peculiarities, defective tooth enamel and progressive joint stiffness.
• Phacomatosis pigmentokeratotica: A very rare syndrome characterized mainly by abnormally pigmented areas on the skin which is associated with neurological problems. The skin pigmentation spreads and generally occurs only on one side of the body.
• Phenylketonuria: A metabolic disorder where there is a deficiency of the enzyme phenylalanine hydroxylase which leads to a harmful buildup of the phenylalanine in the body. Normally the phenylalanine is converted into tyrosine. The severity of the symptoms can range from severe enough to cause mental retardation to mild enough not to require treatment. Severity is determined by the level of impairment of enzyme activity of phenylalanine hydroxylase.
• Phenylketonuria type 2: A genetic condition where phenylalanine (component of protein) is unable to be broken down due to an enzyme (phenylalanine hydroxylase) deficiency which leads to a harmful build up of the compound. The condition is characterized by neurological symptoms as well as the presence of increased levels of phenylalanine in the blood.
• Phenytoin - Teratogenic Agent: There is evidence to indicate that exposure to Phenytoin during pregnancy may have a teratogenic effect on the fetus. A teratogen is a substance that can cause birth defects. The likelihood and severity of defects may be affected by the level of exposure and the stage of pregnancy that the exposure occurred at.
• Pheochromocytoma: pheochromocytoma is a rare tumor that usually starts in the cells of the adrenal glands
• Pheochromocytoma as part of Neurofibromatosis: A tumor that develops in the part of the adrenal gland called the medulla which produces adrenalin and noradrenaline. This tumor is often associated with a condition called neurofibromatosis. The tumor affects automatic body activities such as regulating breathing rate and heartbeat.
• Phocomelia - contractures - absent thumb: A very rare syndrome characterized mainly by absent thumbs, contractures and missing arm and leg bones.
• Phosphoserine aminotransferase deficiency: A recessively inherited enzyme (phosphoserine aminotransferase) deficiency which manifests as uncontrollable seizures, psychomotor retardation, small head and increased muscle tone. Treatment from birth can prevent early death and allow a relatively normal life.
• Photosensitive epilepsy: Epilepsy or seizures triggered by visual stimuli such as flashing light, moving patterns and bold, regular patterns.
• Pick's disease of the brain: A degenerative brain disease involving the frontal and temporal brain lobes resulting primarily in progressive dementia and loss of motor and language functions. It is characterized by the presence of proteins called Pick bodies in damaged nerve cells.
• Pilo dento ungular dysplasia - microcephaly: A very rare syndrome characterized mainly by hair, tooth and nail abnormalities as well as a small head.
• Pitt-Hopkins syndrome: A very rare syndrome characterized mainly by mental retardation with periods of overbreathing and apnea.
• Pituitary tumors, adult: A benign or cancer tumor that develops in the tissue of the pituitary gland in adults. The pituitary gland produces various hormones and some pituitary tumors (functioning tumors) can affect the secretion of one or more of these hormones resulting in a range of symptoms depending on the exact location of the tumor. Some pituitary tumors do not affect hormone production (nonfunctioning tumors).
• Placental-site gestational trophoblastic tumor: A rare condition where cancer develops in the uterine muscle and in the site that the placenta was attached. The tumor forms after ectopic pregnancies, abortions or even following a normal delivery.
• Plant poisoning - Acetylandromedol: Acetylandromedol is a chemical found naturally in plants from the Ericaceae family which includes rhodendrons. Human poisoning can occur through eating honey made from pollen and nectar from these flowers or from eating other parts of the plant. The severity of symptoms may vary from mild to life-threatening depending on the amount consumed.
• Plant poisoning - Amygdalin: Amygdalin is a chemical found naturally in various plants e.g. stone fruit kernels and raw almonds. Eating these parts of the plant that contain the chemical can cause symptoms of cyanide poisoning as the amygdalin is converted to cyanide by the digestive process. Obviously, the concentration of the chemical varies amongst species of plant and often, significant quantities are needed to produce symptoms. Nevertheless, severe poisoning can result in death. Amygdalin is believed by some to inhibit cancers but there has been no conclusive proof of this.
• Plant poisoning - Andromedotoxin: Andromedotoxin is a toxin found naturally in plants such as aloe vera, senna, rhubarb and Cascara buckthorn. The main symptoms are gastrointestinal which can range in severity depending on the amount consumed. Severe cases can result in kidney damage and gastrointestinal bleeding.
• Plant poisoning - Anthraquinone: Anthraquinone is a toxin found naturally in plants such as aloe vera, senna, rhubarb and Cascara buckthorn. The main symptoms are gastrointestinal which can range in severity depending on the amount consumed. Severe cases can result in kidney damage and gastrointestinal bleeding.
• Plant poisoning - Conline: Conline is a toxin found naturally in plants such as aloe vera, senna, rhubarb and Cascara buckthorn. The main symptoms are gastrointestinal which can range in severity depending on the amount consumed. Severe cases can result in kidney damage and gastrointestinal bleeding.
• Plant poisoning - Cyanogenic glycoside: Cyanogenic glycoside is a toxin found naturally in various plants e.g. cherries, plums, almonds, peaches, apricots, apples and cassava. The chemical is usually concentrated in the seeds, kernels or wilted leaves. Eating these parts of the plant that contain the chemical can cause symptoms of cyanide poisoning as the cyanogenic glycoside is converted to cyanide by the digestive process. Even chewing the leaves can result in conversion to cyanide due to the presence of digestive enzymes in the mouth. Obviously, the concentration of the chemical varies amongst species of plant and often, significant quantities are needed to produce symptoms. Nevertheless, severe poisoning can result in death.
• Plant poisoning - Cytisine: Cytisine is a chemical found naturally in plants from the Faboideae family e.g. Laburnum, Cytisus, Genista and Sophora. It tends to have an effect similar to nicotine.
• Plant poisoning - Euphorbiaceae: Euphorbiaceae is a family of flowering plants called spurges. They contain various chemicals (alkaloids, glycosides and diterpene ester) which can cause symptoms if ingested.
• Plant poisoning - Grayanotoxin: Grayanotoxin is a chemical found naturally in plants from the Ericaceae family which includes rhodendrons. Human poisoning can occur through eating honey made from pollen and nectar from these flowers or from eating other parts of the plant. The severity of symptoms may vary from mild to life-threatening depending on the amount consumed.
• Plant poisoning - Hydroquinone: Hydroquinone is a chemical metabolized by the human digestive system from a naturally occurring chemical called arbutin found in the leaves of plants such as blueberries, cranberries, bearberries and red whortleberries. The main symptoms are irritation of the gastrointestinal mucosa but severe poisoning can cause systemic symptoms.
• Plant poisoning - Indian tobacco (Lobelia inflata): Ingestion of parts of the Indian tobacco plant may cause various symptoms and severe cases may result in a coma.
• Plant poisoning - Indole alkaloids: Indole alkaloids are a group of chemicals found naturally in plants such as snakeroot and Madagascar periwinkle. Specific indole alkaloids from this group are vinblastine, reserpine and vincristine.
• Plant poisoning - Lobeline: Lobeline is a chemical found naturally in plants called lobelias. Ingesting plants containing the chemical produces symptoms similar to the effects of nicotine.
• Plant poisoning - Nicotine alkaloids: Nicotine alkaloids is a chemical found naturally in plants such as the mustard tree. It produces symptoms similar to the effects of nicotine.
• Plant poisoning - Poison hemlock (Conium maculatum): Ingestion of parts of the Poison hemlock plant may cause various symptoms and severe cases may result in a coma.
• Plant poisoning - Quinolizidine alkaloids: Quinolizidine alkaloids are chemicals found naturally in plants such as the scotch broom. The ingestion of plants containing these chemicals results mainly in nervous system symptoms. Examples of alkaloids from this group are: sparteine, lupanine, ;upinine, hydroxylupanine, spathulatine and thermopsine.
• Plant poisoning - Rhodotoxin: Rhodotoxin is a chemical found naturally in rhodendrons. Human poisoning can occur through eating honey made from pollen and nectar from these flowers or from eating other parts of the plant. The severity of symptoms may vary from mild to life-threatening depending on the amount consumed.
• Plant poisoning - Tetranortriterpene: Tetranortriterpene is a toxin that occurs naturally in some plants (e.g. Chinaberry tree). It functions as a natural insect repellant but is toxic to the human nervous system. Ingesting plant parts with this chemical can cause poisoning symptoms.
• Plant poisoning - tobacco (Nicotiana tabacum): Ingestion of parts of the tobacco plant may cause various symptoms and severe cases may result in a coma.
• Plica Syndrome: Knee inflammation usually triggered by overuse or injury.
• Pneumonia, Aspiration: Inflammation of the lungs and bronchioles caused by breathing in liquids and solids (usually the stomach contents).
• Pneumonia, Bacterial: Inflammation of the lungs and bronchioles caused by bacteria.
• Pneumonia, Staphylococcal: Inflammation of the lungs and bronchioles caused by the Staphylococcal bacteria. The condition is not common and often occurs as a complication of influenza or other viral respiratory infections. This form of pneumonia is considered serious and up to a third of cases can result in death.
• Pneumonia, Viral: Inflammation of the lungs and bronchioles caused by a virus.
• Poisoning: The condition produced by poison
• Polio: Dangerous virus now rare due to vaccination.
• Polyarteritis nodosa: A serious blood vessel disease where small and medium-sized arteries become swollen and damaged and are unable to adequately supply oxygenated blood to various tissues in the body. The disease can occur in a mild form or a serious, rapidly fatal form.
• Polyarthritis, rheumatic factor-negative: A form of rheumatoid arthritis which doesn't involves the presence of rheumatoid factor in the blood. More than one joint is involved.
• Polychondritis: A serious, progressive, episodic condition characterized by inflammation and degeneration of cartilage in the body. The duration and severity of the episodes can vary.
• Polycystic kidneys, severe infantile, with tuberous sclerosis: A rare genetic disorder characterized by numerous kidney cysts and hamartomas (benign nodules that can occur in the skin or various organs including the brain).
• Polymorphic catecholergic ventricular tachycardia: A very rare disorder involving an abnormal heart rhythm in an apparently otherwise normal heart. By the second decade of life, half of the sufferers will die.
• Polymyalgia rheumatica: A condition characterized by muscle pain and stiffness, fatigue and fever. It is often associated with giant-cell arteritis which is a related but more serious condition.
• Pontocerebellar Hypoplasia Type 2B: A rare inherited condition where the brainstem and part of the brain (cerebellum) is abnormally small. Type 2B differs from other types with respect to the location of the genetic defect.
• Pontocerebellar Hypoplasia Type 2C: A rare inherited condition where the brainstem and part of the brain (cerebellum) is abnormally small. Type 2C differs from other types with respect to the location of the genetic defect.
• Pontocerebellar Hypoplasia Type 6: A rare inherited condition where the brainstem and part of the brain (cerebellum) is abnormally small.
• Pontocerebellar hypoplasia type V: A rare inherited condition where the brainstem and part of the brain (cerebellum) is abnormally small.
• Pontocerebellar hypoplasia with infantile spinal muscular atrophy: A rare, recessively inherited disorder characterized by an abnormally small brain and brainstem which manifests as a small head and mental retardation. The disorder is lethal with death usually occurring within the first year. The brain progressively degenerates.
• Porencephaly: A central nervous system disorder involving cysts in the brain cortex caused by stroke, infection or genetic anomaly.
• Porphyria: A group of disorders characterized by excess production of porphyrin or its precursors which affects the skin and/or nervous system.
• Porphyria, hereditary coproporphyria: An inherited disorder that affects the nervous system and sometimes the skin. It occurs when a metabolic disorder results in excessive production of coproporphyrins which accumulate in body tissues and is excreted in large amounts.
• Positive rheumatoid factor polyarthritis: A form of rheumatoid arthritis which involves the presence of rheumatoid factor in the blood. More than one joint is involved.
• Post-Streptococcal Neurologic Disorders: A rare autoimmune disorder where the body develops an abnormal autoimmune response to streptococcal infection and causes neurological symptoms.
• Post-traumatic epilepsy: Recurring seizures that after some sort of trauma that results in injury to the brain. The seizures may be partial or generalized. The severity of the disorder is determined by the degree of damage to the brain.
• Post-vaccinial encephalitis: Post-vaccinial encephalitis is a brain infection that occurs after a smallpox vaccination.
• Postoperative septicaemia: When a person contracts a bacterial infection in their blood system that occurs after an operation
• Postpartum Eclampsia: Postpartum eclampsia is the development of seizures or coma in pregnant women suffering from high blood pressure. Postpartum means that it soon after the delivery. Eclampsia is a serious condition which requires urgent medical treatment. Eclampsia may be associated with moderate as well as significant increases in blood pressure.
• Powell-Chandra-Saal syndrome: A very rare syndrome characterized mainly by webbed joints and heart, vertebral, ear and radial defects.
• Powell-Venencie-Gordon syndrome: A very rare syndrome characterized mainly by thickened skin on the palms and soles as well as spastic paralysis.
• Precocious myoclonic encephalopathy: An early-onset form of myoclonic seizures. It is caused by brain abnormalities due to such things as brain malformations and inborn errors of metabolism.
• Premature chromosome condensation with microcephaly and mental retardation: A genetic disorder characterized mainly by a small head and mental retardation.
• Premenstrual syndrome: A collection of symptoms that some women suffer that occurs directly before menstruation
• Prescribed medication addiction: An uncontrollable desire to use prescribed medication in a manner or frequency not prescribed. Drugs such as painkillers are prescribed to treat such things as pain but patients may become physically dependent on the drug and continue to obsessively use it even after the condition it was prescribed for has resolved. Frequent use leads to an increased tolerance to the drug so higher and higher doses are required to achieve the desired euphoric feeling.
• Primary Fibromyalgia: Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues. Primary fibromyalgia is a term given to fibromyalgia that occurs for no apparent reason whereas secondary fibromyalgia has an identifiable cause. The primary form is more common than the secondary form.
• Primary Hyperaldosteronism: An adrenal gland disorder where excess aldosterone hormone is produced resulting in symptoms such as headache, fatigue, nocturia and increased urine production. Also called Conn's syndrome.
• Primary Lateral Sclerosis: A neurological disorder involving the upper motor nerves and causing progressive muscle weakness in the extremities and facial area. This condition involves mutations in the same gene and overlapping symptoms with juvenile primary lateral sclerosis but the difference is that primary lateral sclerosis only involves degeneration of the upper motor neurons whereas infantile-onset spastic paralysis is more severe and involves degeneration of upper and lower motor neurons.
• Primary amebic meningoencephalitis: A relatively rare but serious infectious disease caused by Naegleria fowleri which is a type of free-living amoeba that can be found in warm fresh water and damp soil. The incubation period is from a few days to a week.
• Primary angiitis of the central nervous system: Inflammation of blood vessels that affect the central nervous system (brain and spinal cord). There are three main types within this category: benign angiitis of the central nervous system (BACNS), granulomatous angiitis of the central nervous system (GACNS) and atypical primary angiitis of the central nervous system (atypical ACNS). Symptoms vary depending on which particular type is involved and which part of the central nervous system is involved.
• Primary dystonia: Dystonia is a neurological movement disorder where the muscle contract involuntarily and cause abnormal postures or repetitive, twisting movements. In primary dystonia the condition is the result of a genetic defect and there are no other symptoms other than the movement problems. The age of onset and severity of symptoms is variable with some cases being of a progressive nature which can lead to severe disability.
• Prion diseases: Various diseases caused by abnormal proteins (prions) in the brain.
• Progeria: A rare fatal genetic disorder characterized by extremely premature aging.
• Progeria short stature pigmented nevi: A very rare inherited disorder characterized by premature aging, short stature, and immune system deficiency. The type and severity of symptoms is variable.
• Progressive Multifocal Leukoencephalopathy: Progressive degenerative condition of the brain.
• Progressive Rubella Panencephalitis: A very rare complication of rubella infection where neurological symptoms develop following a congenital rubella infection and very rarely with childhood rubella. It is believed that the condition is the result of persistent rubella virus infection.
• Progressive Supranuclear Palsy: A disorder characterized by reduced motor control, dementia and eye movement problems.
• Progressive cerebellocerebral atrophy: A rare progressive disorder characterized mainly by a small head, mental retardation and spastic quadriplegia. The disorder most often occurs in children with a severe lack of oxygen around the time of birth or in infants who have had a congenital infection. Some cases are believed to be familial and involve no infection or low oxygen problems.
• Prostate Cancer: Cancer of the prostate.
• Proud-Levine-Carpenter syndrome: A very rare syndrome characterized mainly by abnormal brain development, a small head and genital abnormalities.
• Proximal myotonic dystrophy: A very rare genetic muscle disorder which is often associated with cataracts, abnormal heart rhythm and infertility. Muscle weakness tends to occur more in muscles closer to the trunk such as the neck, shoulders, hips and upper legs. Pregnancy can exacerbate or initiate symptoms.
• Proximal spinal muscular atrophy: A rare group of muscle disorders which mainly affects the muscles closest to the trunk of the body. Muscles become progressively weak and wasted due to damage to motor neurons in the spinal cord and brainstem.
• Proximal spinal muscular atrophy, type 1: A type of spinal muscular atrophy which is a progressive genetic motor neuron disease involving the nerves and muscles. The condition is relatively rare and is characterized by muscle weakness which leads to structural deformities and loss or reduced capability of normal body movements. SMA type I is the most debilitating form as muscular weakness is evident at birth and diagnosis usually occurs within the first three months.
• Proximal spinal muscular atrophy, type 3: A rare inherited disorder where motor neuron degeneration causes progressive muscle weakness and atrophy. The proximal muscles tend to be more affected than the distal ones and the legs tend to be more affected than the arms.
• Proximal tubulopathy - diabetes mellitus - cerebellar ataxia: A very rare syndrome characterized mainly by diabetes, movement disorder and kidney abnormality. Death often occurs during childhood.
• Pseudo-torch syndrome: A rare genetic syndrome characterized by a small head, eye disease and brain abnormalities. The symptoms are often very similar to another disorder caused by certain infections during pregnancy.
• Pseudoadrenoleukodystrophy: A rare disorder where an enzyme deficiency (Acyl-CoA Oxidase) results in symptoms such as seizures, apnea, delayed psychomotor retardation and neurological deterioration.
• Pseudoprogeria syndrome: A very rare syndrome characterized mainly by absent eyelashes and eyebrows as well a mental retardation.
• Psoriasis: Chronic skin rash condition, usually red or silver and blistery.
• Psychiatric disorders associated Celiac Disease: Patients with Psychiatric disorders are more susceptible to developing celiac disease than the average population. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Psychogenic Movement Disorders: Movement problems for which no neurological, chemical or structural cause can be determined. The condition is believed to be the result of a psychiatric problem and symptoms occur subconsciously.
• Psychogenic nonepileptic seizures: An episode that resembles and epileptic seizure but is a psychological manifestation. True epileptic seizures result from abnormal electrical activity in the brain. The condition often stems from some sort of severe emotional trauma such as childhood sex abuse.
• Pterygia - Mental retardation - Distinctive Craniofacial Features: A very rare syndrome characterized mainly by short stature, underdeveloped genitals and various skull and facial anomalies.
• Pulmonary embolism: The occurrence of an embolism which blocks blood vessels in the lungs
• Purine nucleoside phosphorylase deficiency: A very rare genetic disease involving an enzyme (purine nucleoside phosphorylase - PNP) deficiency which causes a buildup of toxic metabolic products which in turn impairs the development of T-cells (part of the body's immune system). The condition is characterized primarily by frequent infections and various neurological symptoms.
• Pyridoxamine 5-prime-phosphate oxidase deficiency: A metabolic disorder involving a deficiency of an enzyme called 5-prime-phosphate oxidase. Symptoms start soon after birth and involves seizures and other anomalies.
• Pyruvate carboxylase deficiency, Group A: A rare inherited disorder characterized by a deficiency of pyruvate carboxylase which leads to accumulation of lactic acid and other compounds which can have a toxic effect on the nervous system and body organs. Type A has moderately severe symptoms that usually start during infancy.
• Pyruvate carboxylase deficiency, Group B: A rare inherited disorder characterized by a deficiency of pyruvate carboxylase which leads to accumulation of lactic acid and other compounds which can have a toxic effect on the nervous system and body organs. Type B has severe, life-threatening symptoms that can be noticed soon after birth.
• Pyruvate dehydrogenase phosphatase deficiency: A genetic disease involving an enzyme deficiency which causes exercise intolerance and mild developmental delay. Symptoms are variable.
• Quadriplegia: Paralysis of all four limbs and usually the entire trunk from the neck down; due to spinal cord damage at level of cervical spine (neck).
• Quinidine toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Rabies: An infectious disease that can affect any mammal including humans and is transmitted through the saliva of an infected animal. The infectious agent is the Neurotropic lyssavirus which affects the salivary gland and also causes neurological symptoms.
• Radial Nerve Entrapment: Compression or entrapment of the radial nerve which runs along the forearm. The problem can result from such things as bone tumors, bone fracture, trauma, lipomas or the repetition of certain arm motion. This nerve is involved in controlling various muscles in the hand, forearm and the wrist.
• Radiation induced meningioma: A type of brain tumor caused by exposure of the head region to radiation. Radiation is often used to treat a number of conditions, particularly cancer. The tumor can develop years or even decades after the exposure. Symptoms are determined by the exact location and size of the tumor.
• Radio digito - facial dysplasia: A very rare syndrome characterized mainly by abnormalities of the arm bones and facial anomalies.
• Rajab-Spranger syndrome: A rare syndrome characterized mainly by a skin fat disorder, mental retardation and deafnes.
• Ramban-Hasharon syndrome: A rare disorder characterized primarily by psychomotor retardation, short stature and neutrophil abnormalities.
• Ramon Syndrome: A rare genetic condition characterized by cherubism, enlarged gums, epilepsy, mental deficiency and excessive body hair (hypertrichosis).
• Ramsay Hunt II: A group of neurological disorders which progressively deteriorate and may include seizures, mental retardation, muscle spasms and muscle incoordination.
• Ramsay Hunt Syndrome Type 2: A syndrome characterized by facial paralysis with italgia and a vesicular eruption
• Rasmussen encephalitis: A very rare disorder of the central nervous system which usually involves only one side of the brain and involves seizures, mental deterioration and progressive weakness on one side of the body.
• Rasmussen subacute encephalitis: A very rare progressive brain disease possibly caused by immune system problems. Symptoms become progressively worse and then the condition often stabilizes with a long life possible despite permanent neurological damage.
• Rasmussen's Encephalitis: Rare possibly-autoimmune brain condition.
• Rathburn disease: A rare inherited condition involving bone and teeth mineralization abnormalities and reduced phosphatase enzyme activity. The severity of the disorder varies according to the degree of reduction in phosphatase activity.
• Ray-Peterson-Scott syndrome: A very rare syndrome characterized mainly by pelvic anomalies and joint contractures involving the legs.
• Reactive arthritis: The inflammation of a joint
• Recurring meningitis: This is a form of benign, recurrent, aseptic meningitis.
• Red buckeye poisoning: The red buckeye is a shrubby plant which bears a cluster of small red flowers and brown seeds with distinctive pale markings. The plant originated in the US. The seeds and leaves contain various chemicals (glycoside aesculin, saponin aescin and alkaloids) which can cause poisoning symptoms if eaten. The plant is considered very toxic and death can result in cases of severe poisoning.
• Reduced alertness: A condition which is characterized by a decreased level of consciousness
• Reflex sympathetic dystrophy syndrome: A condition characterized by pain and reduced range of motion in the shoulder and hand of the affected arm.
• Refractory Celiac Disease: Refractory Celiac Disease is celiac disease that fails to respond to treatment which involves a gluten-free diet. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The condition is quite uncommon and often the resulting poor absorption of nutrients from the intestines leads to a poor prognosis.
• Refsum disease, infantile form: A rare inherited biochemical disorder characterized by normal development initially followed by degeneration, facial anomalies and enlarged liver.
• Reiter’s syndrome: A form of reactive arthritis characterized by arthritis, urethritis, conjunctivitis and skin lesions.
• Relapsing polychondritis: A chronic disease that affects multiple joints resulting in inflammation and degeneration
• Renal abscess: A pus-filled cavity that develops in the kidney as a result of inflammation. The inflammation may result from other purulent infections in the body. It is most common in young adults.
• Renal tubulopathy - diabetes mellitus - cerebellar ataxia: A very rare condition characterized by rapidly progressive diabetes, kidney disease and cerebellar ataxia. Symptoms develop during the first five years.
• Renier-Gabreels-Jasper syndrome: A very rare inherited syndrome characterized by a small head, severe mental retardation, spasticity, deafness and epilepsy.
• Repetitive Motion Disorders: Any of various injuries caused by repetitive motion.
• Repetitive Strain Injury: Various conditions with inflammation from repetitive movements.
• Repetitive unwanted movements: The occurrence of repetitive movements of some part of the body which are uncontrolled
• Respiratory acidosis: respiratory acidosis is acidosis (abnormally increased acidity of the blood) due to decreased ventilation of the pulmonary alveoli, leading to elevated arterial carbon dioxide concentration
• Respiratory alkalosis: A condition caused by excessive loss of carbon dioxide from the body.
• Restless Legs Syndrome: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs.
• Restless Legs Syndrome, Susceptibility To, 1: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 1 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 12q12-q21.
• Restless Legs Syndrome, Susceptibility To, 2: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 2 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 14q13-q31.
• Restless Legs Syndrome, Susceptibility To, 3: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 3 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 9p24-p22.
• Restless Legs Syndrome, Susceptibility To, 4: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 4 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 2q33.
• Restless Legs Syndrome, Susceptibility To, 5: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 5 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 20p13.
• Restless Legs Syndrome, Susceptibility To, 6: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 6 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 6p21.
• Restless Legs Syndrome, Susceptibility To, 7: A neurological disorder where legs develop and crawling, aching skin sensation which is relived by moving the legs. Symptoms tend to occur mainly at night. Type 7 refers to an increased susceptibility to the condition which is caused by a defect in chromosome 2p14.
• Retinis pigmentosa - deafness - hypogenitalism: A very rare syndrome characterized mainly by progressive retinal damage, deafness and genital anomalies.
• Retropharyngeal abscess: The high mortality rate of retropharyngeal abscess is owing to its association with airway obstruction
• Rett's syndrome: Autism-like behavioral syndrome in infant girls
• Rett-like syndrome: A very rare syndrome characterized mainly by
• Reye's syndrome: is a potentially fatal disease that causes numerous detrimental effects to many organs, especially the brain and liver
• Rhabdoid tumor: An aggressive malignant tumor that occurs in children. Symptoms depend on the location of the tumor. The tumors often form in the kidneys and then tend to metastasize to the brain and sometimes the lungs.
• Rheumatic fever: An inflammatory disorder that can occur as a complication of untreated streptococcal bacterial infection such as strep throat or scarlet fever. The condition may affect the brain, skin, heart and joints.
• Rheumatoid arthritis: An autoimmune inflammatory condition which primarily affects the joints
• Rheumatoid arthritis related fibromyalgia: Rheumatoid arthritis related fibromyalgia refers to fibromyalgia that is associated with rheumatoid arthritis. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues. Rheumatoid arthritis is a chronic inflammatory form of arthritis and is an autoimmune disease.
• Rhizomelic chondrodysplasia punctata, type 1: A rare genetic disorder involving abnormal development of bones which causes abnormal calcification of bones near the joints. The genetic defect is located on chromosome 6q22-q24.
• Rhizomelic chondrodysplasia punctata, type 3: A rare genetic disorder involving abnormal development of bones due to a particular enzyme deficiency (alkyldihydroxyacetonephosphate synthase). The bones have abnormal calcification of bones near the joints. The genetic defect is located on chromosome 2q31.
• Rhizomelic pseudopolyarthritis: A rare condition which tends to cause muscle pain and stiffness in the neck, shoulder and hip area.
• Rhizomelic syndrome: A very rare syndrome characterized mainly by short upper arm and thigh bones. Death frequently occurs in early childhood.
• Rib symptoms: Symptoms affecting the ribs
• Richards-Rundle syndrome: A very rare syndrome characterized mainly by mental retardation, ataxia, deafness and ketoaciduria.
• Richieri Costa Guion Almeida Cohen syndrome: A very rare syndrome characterized mainly by premature fusion of skull bones, facial anomalies and various other abnormalities.
• Riedel syndrome: A rare condition that occurs when fibrous tissue forms in the thyroid area and progressively destroys the thyroid gland.
• Rieger Syndrome: A rare genetic disorder characterized by underdeveloped or absent teeth and craniofacial and eye abnormalities.
• Rift Valley Fever: Mosquito-borne viral infection affecting animals and humans
• Right parietal lobe syndrome related Alzheimer's disease: Right parietal lobe syndrome related Alzheimer's disease is a variant of Alzheimer's disease that involves abnormalities in a particular part of the brain. It is characterized by Alzheimer's symptoms as well as problems with such things as construction (making things) and drawing as well as denial of their disabilities. Alzheimer's disease is a progressive disorder involving degeneration of the brain. The disease mainly affects brain functions involving thinking, memory, personality and behaviour.
• Rigidity: When there is inflexibility or stiffness
• Rippling muscle disease: A rare dominantly inherited disorder involving skeletal muscle contractions which produces a visible rippling affect.
• Rippling muscle disease, 1: A rare dominantly inherited disorder involving skeletal muscle contractions which produces a visible rippling affect. Type 1 involves a defect on chromosome 1q41.
• Rippling muscle disease, 2: A rare dominantly inherited disorder involving skeletal muscle contractions which produces a visible rippling affect. Type 2 involves a defect on chromosome 3p25.
• Ritalin abuse: Ritalin is a prescription drug used to treat ADHD. Some people use the drug illegitimately which can result in various unwanted symptoms.
• Rocky Mountain spotted fever: A bacterial disease caused by Rickettsia rickettsii and transmitted by ticks. The condition causes fever and a characteristic rash and may be fatal in severe or untreated cases.
• Rolland-Desbuquois syndrome: A condition characterized by dwarfism, hydrocephalus, facial abnormalities and a narrow chest. Survival is possible past infancy. The condition is a less severe form of Silverman-Handmaker syndrome which is lethal.
• Romano-Ward syndrome: A genetic heart disorder characterized by an abnormal heart rhythm (long Q-T interval) where the heart takes longer than normal to recharge between beats. The severity of the condition can vary.
• Rommen-Mueller-Sybert syndrome: A very rare syndrome characterized mainly by heart defects, short stature and craniofacial anomalies.
• Roseola infantum: Contagious infant conditions
• Rubella panencephalitis: A very rare complication of rubella infection where neurological symptoms develop following a congenital rubella infection and very rarely with childhood rubella. It is believed that the condition is the result of persistent rubella virus infection.
• Rubinstein-Taybi Syndrome: A rare congenital disorder characterized by very small stature, broad thumbs and toes, slanted palpebral fissures and hypoplastic maxilla.
• Rud Syndrome: A condition characterized by ichthyosis, epilepsy, short stature, hypogonadism and severe mental retardation.
• SAPHO syndrome: A rare disorder involving skin (acne, pustulosis), bone (hyperostosis, osteitis) and joint problems.
• SBCAD deficiency: A very rare genetic disorder where an enzyme deficiency prevents the break down of certain proteins into energy and results in a harmful accumulation of acids in the blood and body tissues. More specifically, there is a deficiency of an enzyme (2-methylbutyryl-coenzyme A dehydrogenase) needed to convert the amino acid isoleucine into energy. 2-methylbutyrylglycine levels build up in the body and may cause damage. Symptoms vary according to the degree of enzyme deficiency - can range from asymptomatic to life-threatening.
• SCHAD deficiency: A rare genetic disorder involving the deficiency of an enzyme (hydroxyacyl-coa dehydrogenase). The severity of the symptoms is highly variable with some cases resulting in death during the first decade while others suffer psychomotor and regression. Symptoms tend to be more severe in males who suffer progressive neurodegeneration whereas females tend to suffer mainly from developmental delay.
• SIADH: Inappropriate release of Antidiuretic hormone, resulting in fluid retention.
• SLE related fibromyalgia: SLE related fibromyalgia refers to fibromyalgia that is associated with systemic lupus erythematosus. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues. SLE is an autoimmune disease that can affect virtually any body system e.g. blood vessels and organs.
• SPG: A group of neurodegenerative disorders involving progressive spasticity and increased reflexes in the legs. The rate of progression and severity is variable depending on the subtype involved.
• SSADH deficiency (succinic semialdehyde dehydrogenase deficiency): A rare inherited metabolic disorder where an enzyme deficiency (succinic semialdehyde dehydrogenase) prevents the normal metabolism of gamma-aminobutyric acid.
• Sacroilitis: Inflammation of the sacral joint
• Salvioli syndrome: A rare inherited form of bone disease.
• Sandhaus Ben-Ami syndrome: A rare disorder characterized by an underdeveloped kneecap and other skeletal abnormalities.
• Sandhoff Disease: An inherited biochemical disorder involving a deficiency of the enzyme called hexosaminidase A&B which results in the harmful accumulation of chemicals in the central nervous system and other body tissues.
• Sarcoidosis: Rare autoimmune disease usually affecting the lungs.
• Sardine poisoning (clupeotoxin): Some sardines contain toxins (Clupeotoxin) which can be poisonous to humans if eaten. Heat does not destroy the toxin and there is still uncertainty as to the origin of the toxin. The toxin appears to be present in higher concentrations in summer and is believed to be possible linked to the consumption of toxic food in its food web. The size and age of the sardines does not appear to be related to the toxicity. The sardines are found in coastal waters off Africa and the Caribbean, Indian and Pacific Oceans.
• Satoyoshi syndrome: A very rare syndrome characterized by alopecia, diarrhea, skeletal abnormalities and painful leg cramps caused by physical exercise or emotional stress.
• Saul-Wilkes-Stevenson syndrome: A very rare syndrome characterized mainly by muscle problems, abnormal skin pigmentation, movement disorder, mental retardation and scoliosis.
• Say-Barber-Miller syndrome: A very rare syndrome characterized mainly by immune system problems and a small head.
• Schaefer-Stein-Oshman syndrome: A rare disorder where excessive growth and abnormal hardening affects the head and facial bones.
• Schilder's Disease: Rare nerve myelin condition.
• Schimke, X-linked, mental retardation syndrome: A very rare syndrome characterized by mental retardation, abnormal involuntary movements and retarded growth.
• Schindler disease: Schindler disease is a rare congenital metabolic disorder involving a deficiency of a particular enzyme (alpha-N-acetylgalactosaminidase) which results in a buildup of glycoproteins in the body. The condition originates from a genetic mutation and is an inherited disorder. There are three main types of this condition, each with varying severity. The most severe form usually results in death within a few years of birth whereas the mild form doesn't cause symptoms until after the age of 30. The type and severity of symptoms varies depending on which form of the disease is involved.
• Schindler disease, type 1: Schindler disease is a rare congenital metabolic disorder involving a deficiency of a particular enzyme (alpha-N-acetylgalactosaminidase) which results in a buildup of glycoproteins in the body. The condition originates from a genetic mutation and is an inherited disorder. There are three main types of this condition, each with varying severity. Type 1 is an infantile form and is the most severe form. It usually results in death within a few years of birth.
• Schindler disease, type 3: Schindler disease is a rare congenital metabolic disorder involving a deficiency of a particular enzyme (alpha-N-acetylgalactosaminidase) which results in a buildup of glycoproteins in the body. The condition originates from a genetic mutation and is an inherited disorder. There are three main types of this condition, each with varying severity. Type 3 is an intermediate form and is between type 1 and 2 with respect to severity.
• Schinzel Giedion Syndrome: A rare genetic disorder characterized by many skeletal and genital anomalies, unusual face, mental retardation and kidney malformations.
• Schistosomiasis: Parasitic fluke infection in developing countries
• Schizencephaly: A very rare disorder where the brain fails to develop normally and slits or clefts form in the brain. They type and severity of symptoms is determined by the degree of abnormality.
• Schlegelberger-Grote syndrome: A very rare syndrome characterized mainly by deafness, fingerlike thumbs and a blood disorder involving abnormally shaped blood platelets.
• Schofer beetz bohl syndrome: A rare syndrome characterized mainly by brain calcification, mental retardation, short stature, diabetes insipidus and unusual facial appearance.
• Sciatica: neuralgia along the nerve course of the sciatic nerve
• Scleroderma: A rare, progressive connective tissue disorder involving thickening and hardening of the skin and connective tissue. There are a number of forms of scleroderma with some forms being systemic (involving internal organs).
• Scleromyxedema: A rare connective tissue disorder which causes the skin to become progressively thick and hard. The severity of symptoms is variable with lungs and circulation affected in some patients. The degree of resulting disability, disfigurement and response to treatment is variable.
• Sea Hare poisoning: Certain species of sea hares can result in poisoning if eaten. Sea hares are marine mollusks. Two species with a potential for poisoning are found in Oceans near Fiji and Japan. Eating the eggs of these sea hares can also cause liver damage. Poisoning by sea hares is considered quite rare. The substance underlying the condition is organic bromine compounds.
• Sea wasp poisoning: The sea wasp can deliver a serious sting and can be found in the waters of Northern Australia and the Philippines. Death can occur in as little as a few minutes if a person is severely stung.
• Sea wasp poisoning (Chiropsalmus quadrigatus): The Chiropsalmus quadrigatus jellyfish can deliver a serious sting and can be found in the waters of Northern Australia and the Philippines. Death can occur in as little as a few minutes if a person is severely stung.
• Sea wasp poisoning - Chironex fleckeri: The Chironex fleckeri jellyfish is one of the deadliest jellyfish in the world. It can deliver a serious sting and can be found mainly in the waters of Northern Australia and the Philippines. Death can occur in as little as a few minutes if a person is severely stung.
• Seckel syndrome 1: Seckel syndrome is a rare inherited disorder mainly involving retarded growth, mental retardation, small head and a facial appearance resembling a bird. It is often referred to as bird-headed dwarfism. There are three subtypes of the disorder. Additional variable symptoms may also occur.
• Seckel syndrome 2: Seckel syndrome is a rare inherited disorder mainly involving retarded growth, mental retardation, small head and a facial appearance resembling a bird. It is often referred to as bird-headed dwarfism. There are three subtypes of the disorder. Type 2 tends to have less severe motor and mental retardation and the head is not small. Type 2 also involves at least one café au lait spot. Additional variable symptoms may also occur.
• Seckel syndrome 3: Seckel syndrome is a rare inherited disorder mainly involving retarded growth, mental retardation, small head and a facial appearance resembling a bird. It is often referred to as bird-headed dwarfism. There are three subtypes of the disorder with type 1 being the most severe.
• Secondarily generalized seizure: A partial seizure is an electrical disturbance that originates in only one part of the brain and resulting in symptoms related to the body functions or parts that are controlled by that part of the brain. During a partial seizure movement, sensations, feelings or emotions may be affected. When the partial spreads to both sides of the brain it is then called generalized seizures. These seizures usually only last a few minutes.
• Secondary Fibromyalgia: Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues. Primary fibromyalgia is a term given to fibromyalgia that occurs for no apparent reason whereas secondary fibromyalgia has an identifiable cause. The primary form is more common than the secondary form.
• Seemanova-Lesny syndrome: A rare disorder characterized by spasticity, seizures, absent abdominal reflexes, small head and mental retardation.
• Segawa Syndrome: A disorder characterized by dystonia of the lower limbs which becomes worse towards nighttime. The condition usually starts during childhood.
• Seizures: Uncontrolled physical movements
• Seizures - intellectual deficit due to hydroxylysinuria: A rare syndrome characterized by mental retardation, seizures and high levels of hydroxylysine in the urine.
• Seizures mental retardation hair dysplasia: A rare syndrome characterized mainly by seizures, mental retardation and hair abnormalities.
• Selective Vitamin B12 malabsorption with Proteinuria: A rare genetic blood disorder where a defect in the vitamin B12 receptor means that it can't be absorbed from food during digestion. As a result of the low vitamin B12 levels, the body produces increased numbers of abnormal enlarged red blood cells (megaloblasts).
• Selenium poisoning: Excessive exposure to selenium. Selenium is essential to the diet in small amounts but is toxic in large amounts. Poisoning can occur through inhalation or ingestion.
• Sensory ataxic neuropathy, dysarthria, and ophthalmoparesis: A very rare syndrome characterized by progressive ataxia, eye muscle problems and a speech disorder (dysarthria).
• Septo-Optic Dysplasia: A rare birth defect characterized by impaired vision and pituitary deficiency.
• Serine deficiency: A metabolic disorder caused by a deficiency of serine which results in various abnormalities.
• Seronegative spondyloarthropathy: Spondyloarthropathy that is negative to rheumatoid facotr
• Serotonin Syndrome: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Serotoninergic syndrome: A disorder involves high levels of serotonin which can result from use of medications such as selective serotonin reuptake inhibitors.
• Severe achondroplasia with developmental delay and acanthosis nigricans: A very rare inherited disorder characterized by abnormal bone development and brain and skin abnormalities.
• Shaken Baby Syndrome: A condition caused by violent shaking of a baby.
• Shaking hands: A condition which is characterized by shaking of the hands
• Sheep laurel poisoning: Sheep laurel is a small shrub which bears clusters of small white or pink flowers and encapsulated fruit. The plant contains chemicals (andromedotoxin and arbutin) which can cause various symptoms if ingested. The plant is considered to be very toxic and death can result if sufficient quantities are eaten.
• Shin spasm: A sudden involuntary contraction of the muscles of the shin.
• Short Chain Acyl CoA Dehydrogenase Deficiency (SCAD): A rare disorder where the body lacks enzymes needed to convert some fats (short-chain fatty acids) into energy. Symptoms are exacerbated by fasting or acute illness. The severity of symptoms is variable with some patients remaining virtually asymptomatic their whole life while other suffer symptoms from infancy.
• Short stature - craniofacial anomalies - genital hypoplasia: A very rare syndrome characterized mainly by short stature, underdeveloped genitals and various skull and facial anomalies.
• Short stature - microcephaly - seizures - deafness: A very rare syndrome characterized by the association of short stature, small head, seizures and deafness.
• Short stature - prognathism - short femoral necks: A very rare syndrome characterized mainly by short stature, protruding jaw and a hip anomaly.
• Short-Chain Acyl-CoA Dehydrogenase Deficiency: A rare disorder where the body lacks enzymes needed to convert some fats (short-chain fatty acids) into energy.
• Shoulder Osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the shoulder joint as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Shoulder conditions: Any condition that affects the shoulder
• Shoulder dislocation: Dislocation of the shoulder joint.
• Shoulder injury: Any injury to the shoulder
• Shoulder muscle strain: Damage to the shoulder muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Shoulder separation: Separation of collarbone (clavicle) and the shoulder blade (scapula).
• Shoulder sprain: Damage to ligaments in the shoulder.
• Shy- Drager syndrome: also known as multiple system atrophy
• Sialidosis type 1: A rare inherited condition where deficiency of an enzyme called neuraminidase results in epilepsy, ataxia and vision problems as well as characteristic cherry red spots in the macula of the eye. Symptoms may be exacerbated by factors such as smoking and menstrual cycles.
• Sialidosis type 1 and 3: A rare inherited biochemical disorder involving the deficiency of an enzyme (alpha-N-acetylneuraminidase) which results in the harmful accumulation of certain chemicals (sialyloligosaccharides and sialylglycopeptides) in various body tissues.
• Sialidosis type 2: A very rare inherited metabolic disorder where a defect in the enzyme alpha-neuraminidase prevents glycoproteins being metabolized - a severe form of Sialidosis type I.
• Sialidosis type I: An inherited metabolic disorder where a defect in the enzyme alpha-neuraminidase prevents glycoproteins being metabolized - a milder form of the condition than sialidosis type II.
• Sialidosis type II: A very rare inherited metabolic disorder where a defect in the enzyme alpha-neuraminidase prevents glycoproteins being metabolized - a severe form of Sialidosis type I.
• Sialidosis type II, juvenile: A very rare inherited metabolic disorder where a defect in the enzyme alpha-neuraminidase prevents glycoproteins being metabolized.
• Sialuria, Finnish type: A rare inherited biochemical disorder characterized by the accumulation of sialic acid in the tissues and excretion of sialic acid in the urine. This condition is an adult form of sialuria.
• Silverman-Handmaker syndrome: A condition characterized by dwarfism, hydrocephalus, facial abnormalities and a narrow chest. The condition results in death during or soon after birth and is a more severe form of Rolland-Debuquois syndrome.
• Simian B virus infection: A type of herpesvirus which occurs in monkeys but can be transmitted to humans through bites or through contact with infected monkey tissue as in a laboratory situation. The virus infects the brain (encephalitis) and the surrounding membrane (meningitis).
• Simple partial seizure: A partial seizure is an electrical disturbance that originates in only one part of the brain and resulting in symptoms related to the body functions or parts that are controlled by that part of the brain. Partial seizures where the patient stays conscious are called simple partial seizures. During a simple partial seizure movement, sensations, feelings or emotions may be affected. Partial seizures may spread to other parts of the brain and are then called generalized seizures. These seizures usually only last a couple of minutes.
• Single upper central incisor: A very rare syndrome characterized by various defects in the middle of the face.
• Sjogren-Larsson syndrome: A rare inherited neurological and skin disorder characterized by mental retardation, spastic paraplegia and thickened scaly skin (ichthyosis). The condition involves a deficiency of fatty alcohol oxidoreductase which causes an accumulation of long-chain fatty alcohols.
• Sjögren syndrome, secondary: An autoimmune disease where the body's immune system attacks parts of the body that produce moisture such as the eyes, mouth and gastrointestinal tract. Sjögren syndrome can occur on its own (primary) or with another connective tissue disease (secondary) such as rheumatoid arthritis, systemic lupus, systemic sclerosis and polymyositis/dermatomyositis. The condition can be mild or severe.
• Sjögren-Larsson syndrome: A rare inherited neurological and skin disorder characterized by mental retardation, spastic paraplegia and thickened scaly skin (ichthyosis). The condition involves a deficiency of fatty alcohol oxidoreductase which causes an accumulation of long-chain fatty alcohols.
• Skeletal dysplasia - mental retardation: A rare recessively inherited disorder characterized mainly by mental retardation, a small head, arthrogryposis (joint contractures), cleft palate and various other abnormalities.
• Sketetal dysplasia coarse facies mental retardation: A rare skeletal disorder where the spine and long bones grow and develop abnormally as well as mental deterioration.
• Sleep disturbance related fibromyalgia: Sleep disturbance related fibromyalgia refers to fibromyalgia that is associated with sleep disturbance. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues.
• Slickhead poisoning (clupeotoxin): Some slickhead contain toxins (Clupeotoxin) which can be poisonous to humans if eaten. Heat does not destroy the toxin and there is still uncertainty as to the origin of the toxin. The toxin appears to be present in higher concentrations in summer and is believed to be possible linked to the consumption of toxic food in its food web. The size and age of the slickhead does not appear to be related to the toxicity. The slickhead are found in coastal waters off Africa and the Caribbean, Indian and Pacific Oceans.
• Slipped epiphysis: Slippage of joint cartilage at the hip joint
• Slowly Progressive Bokhoror: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The slowly progressive form is the most common form and it has four phases: acute, recurrent-exacerbative, fully developed and terminal. Initial acute symptoms last for about 2 to 6 weeks.
• Slowly Progressive VE: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. . Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The slowly progressive form is the most common form and it has four phases: acute, recurrent-exacerbative, fully developed and terminal. Initial acute symptoms last for about 2 to 6 weeks.
• Slowly Progressive Viliuisk Encephalitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The slowly progressive form is the most common form and it has four phases: acute, recurrent-exacerbative, fully developed and terminal. Initial acute symptoms last for about 2 to 6 weeks.
• Slowly Progressive Viliuisk Encephalomyelitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The slowly progressive form is the most common form and it has four phases: acute, recurrent-exacerbative, fully developed and terminal. Initial acute symptoms last for about 2 to 6 weeks.
• Slowly Progressive Vilyuisk Encephalitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The slowly progressive form is the most common form and it has four phases: acute, recurrent-exacerbative, fully developed and terminal. Initial acute symptoms last for about 2 to 6 weeks.
• Slowly Progressive Vilyuisk Encephalomyelitis: A brain disease caused by an unknown pathogen which is probably from the Picornavirus family of viruses. Mode of transmission is uncertain but genetic susceptibility may be involved. The incubation period appears to be an average of 15 years. The disease can be classified according to rate of progression: acute or subacute, slowly progressive and chronic. The slowly progressive form is the most common form and it has four phases: acute, recurrent-exacerbative, fully developed and terminal. Initial acute symptoms last for about 2 to 6 weeks.
• Slowness of movement: A condition which is characterized by movements which are slow in nature
• Smith-Fineman-Myers syndrome 2: A rare inherited disorder characterized mainly by mental retardation and low facial muscle tone. The genetic defect occurs on chromosome Xq23.
• Soto's Syndrome: A rare hereditary disorder characterized by excessive growth during the first few years of life as well as various other mental and physical anomalies.
• Spasmodic Torticollis: Recurrent sudden and single lateral movements of the neck.
• Spasms: Involuntary muscle movements without full control.
• Spastic disorders: Brain disorders leading to sustained spasms, stiffness and rigidity
• Spastic gait: A gait in which it appears the legs are held together and the toes and feet dragged one moving
• Spastic paraparesis: A rare disorder where parts of the body develop spasticity and weakness. Usually the limbs are involved. The disorder is usually an inherited condition.
• Spastic paraparesis deafness: A syndrome that is characterized with spastic paraparesis and deafness.
• Spastic paraplegia - neuropathy - poikiloderma: A very rare syndrome characterized mainly by progressive stiffness and weakness of the legs, peripheral nerve degeneration and a skin disorder called poikiloderma. The eyelashes and eyebrows are usually gone by the age of three.
• Spastic paraplegia epilepsy mental retardation: A very rare syndrome characterized mainly by epilepsy, mental retardation and progressive leg weakness and spasticity.
• Spastic paresis - glaucoma - mental retardation: A very rare syndrome characterized by progressive stiffness and weakness of the legs, glaucoma and mental retardation.
• Spastic quadriplegia - retinitis pigmentosa - mental retardation: A very rare syndrome characterized mainly by progressive stiffness and weakness of the legs and arms, eye problems and mental retardation. The spastic paraplegia is not progressive.
• Spastic tetraplegic - cerebral palsy: A rare disorder characterized by the association of spasticity (muscle tightness of the arms and legs as well as cerebral palsy.
• Spasticity: When there are hypertonic movements of the muscles and they are stiff
• Spasticity - mental retardation: A rare disorder characterized by the association of spasticity and mental retardation.
• Spasticity - mental retardation - epilepsy, X-linked: A rare syndrome characterized by epilepsy, spasticity and mental retardation. The disorder is inherited in a X-linked manner and thus only males present with symptoms though female carriers may have some mild symptoms such as hyperreflexia.
• Spasticity - multiple exostoses: A very rare syndrome characterized by stiff legs and numerous bone outgrowths.
• Spherophakia brachymorphia syndrome: A rare genetic disorder characterized by short stature, and craniofacial, eye, tooth and limb abnormalities.
• Sphingolipidosis: A group of diseases involving the abnormal metabolism and storage of a substance called sphingolipid. Symptoms will vary depending on the disease. Examples of diseases from this group include gangliosidosis, Gaucher's disease and Niemann-Pick disease.
• Spina bifida: A congenital condition which is characterized by the abnormal closure of the vertebral arch
• Spinal AVM: Spinal AVM's refers to a group of abnormal blood vessels (arteries and veins) in the spinal canal. The severity of symptoms depends on the size and growth of the blood vessel malformation. Severe complications such as paralysis can result if the malformed blood vessels rupture and bleed.
• Spinal Cord Tumor: Cancer of the spinal cord or central nervous system.
• Spinal Muscular Atrophy type I: Type of SMA, a genetic motor neuron disease affecting nerves and muscles.
• Spinal Muscular Atrophy type II: Type of SMA, a genetic motor neuron disease affecting nerves and muscles.
• Spinal arthritis: Inflammation of the spine joints. The inflammation can be the result of such things as degenerative joint disease, gout, infection, trauma and autoimmune conditions.
• Spinal atrophy - ophthalmoplegia - pyramidal syndrome: A very rare syndrome characterized by weak eye muscles, progressive spinal cord deterioration resulting in muscle weakness and wasting
• Spinal bulbar motor neuropathy: A rare inherited disease that affects the nerves in the spine and in the bulbous (bulbar) part of the brain stem. The main signs are muscle weakness and wasting.
• Spinal cord injury: spinal cord injury causes myelopathy or damage to white matter or myelinated fiber tracts that carry sensation and motor signals to and from the brain
• Spinal cord neoplasm: A growth (tumor) that arises from the spinal cord. The tumor may be benign or malignant.
• Spinal muscular atrophy with respiratory distress 1: An inherited neuromuscular disease that causes progressive weakness in the arm and chest muscles leading to severe respiratory problems early in life. Sufferers are never able to sit independently and breathing problems progress rapidly with breathing assistance needed within the first five years.
• Spinal muscular atrophy, type 3: A rare inherited disorder where motor neuron degeneration causes progressive muscle weakness and atrophy.
• Spinal shock: A state of spinal shock accompanied by temporary paralysis of the lower extremities often associated with spinal injury.
• Spine osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the spine as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Spinocerebellar ataxia 10: A rare genetic disorder (chromosome 22q13 defect) characterized by gait ataxia and dysarthria (speech disorder). The severity of the condition is variable with some patients becoming wheelchair dependent.
• Spinocerebellar ataxia 13: A rare genetic disorder (chromosome 19 defect) characterized by progressive mental retardation. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia 14: A rare genetic disorder (chromosome 19q13.4qter defect) characterized by gait ataxia, tremors and dysarthria (speech disorder). The condition progresses slowly.
• Spinocerebellar ataxia 17: A rare genetic disorder (chromosome 6q27 defect) characterized by . Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia 19: A rare genetic disorder (chromosome 1p21-q21 defect) characterized by mild cognitive impairment and myoclonus. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia 21: A rare genetic disorder (chromosome 7p21.3-p15.1 defect) characterized by extrapyramidal features and cognitive impairment. The condition progresses slowly over decades. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia 27: A rare genetic disorder (chromosome FGF14; 13q34 defect) characterized by tremors, dyskinesia and psychiatric episodes. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia 3: A rare genetic disorder (chromosome 14q32.1defect) characterized by . Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types. The duration of the disease is 1-20 years.
• Spinocerebellar ataxia 5: A genetic disorder involving progressive degeneration of the spinal cord resulting in symptoms such as incoordination and eye movement problems.
• Spinocerebellar ataxia with axonal neuropathy, type 2: A neurological disorder characterized by progressive ataxia, tremor and muscle weakness and wasting. The rate of progression and severity is variable with some needing wheelchairs in their second decade and others still capable of some walking in their 4th decade.
• Spinocerebellar ataxia, Machado-Joseph type I: A rare genetic disorder (chromosome 14q32.1defect) characterized by early onset of symptoms - ataxia, bulging eyes and extrapyramidal symptoms. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia, Machado-Joseph type II: A rare genetic disorder (chromosome 14q32.1defect) characterized by intermediate onset of symptoms. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia, Machado-Joseph type III: A rare genetic disorder (chromosome 14q32.1defect) characterized by later onset of symptoms such as weak eye muscles and peripheral neuropathy. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia, Machado-Joseph type IV: A rare genetic disorder (chromosome 14q32.1defect) characterized by late onset of symptoms - muscle twitching and Parkinsonism. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia, Machado-Joseph type V: A rare genetic disorder (chromosome 14q32.1defect) characterized by spastic paraparesis. Gait ataxia and dysarthria (speech disorder) also occur and are symptoms common to all the spinocerebellar ataxia types.
• Spinocerebellar ataxia, X-linked, 2: A rare neurological disorder characterized mainly by ataxia, spasticity and early death.
• Spinocerebellar ataxia, X-linked, 4: A rare neurological disorder involving mainly ataxia and dementia which starts during adulthood. The condition is slowly progressive.
• Spinocerebellar ataxia, X-linked, type 4: A rare neurological disorder involving mainly ataxia and dementia which starts during adulthood. The condition is slowly progressive.
• Spinocerebellar ataxia, autosomal dominant: A group of disorder involving slow progressing incoordination and speech and eye movement problems due to degeneration of the cerebellum of the brain. The various forms of the disorder vary according to the degree and range of muscle involvement.
• Spinocerebellar ataxia, autosomal recessive 1: A neurological disorder characterized by progressive ataxia, tremor and muscle weakness and wasting. The rate of progression and severity is variable with some needing wheelchairs in their second decade and others still capable of some walking in their 4th decade.
• Spinocerebellar ataxia, autosomal recessive 4: A rare neurological disorder caused by a genetic defect (chromosome 1p36, recessive) and resulting in ataxia and eye movement problems.
• Spinocerebellar ataxia, autosomal recessive 5: A rare neurological disorder caused by a genetic defect (chromosome 15q24-q26, recessive) and resulting in ataxia, mental problems and a skin disorder. Symptoms start during infancy and more than half of the patients never gain the ability to walk.
• Spinocerebellar ataxia, autosomal recessive 6: A rare disorder that has neurological origins and causes nonprogressive ataxia, which begins during infancy.
• Spinocerebellar ataxia-dysmorphism syndrome: A rare genetic disorder characterized by characteristic facial anomalies, ataxia, delayed psychomotor development and various skeletal deformities.
• Spinocerebellar degenerescence, book type: A very rare syndrome characterized by movement problems and mental retardation that originates from a brain defect.
• Spira syndrome: Chronic fluoride intoxication that can occur from flouridated water as well as exposure to vapors or dusts from various industries, agricultures or mines. The main symptoms are teeth anomalies and gastrointestinal symptoms.
• Spondylarthropathy: Refers to a family of related inflammatory disorders that affect the sacroiliac joints, the spine and, less commonly, peripheral joints.
• Spondyloepimetaphyseal dysplasia, X linked with mental deterioration: A rare skeletal disorder where the spine and long bones grow and develop abnormally as well as mental deterioration.
• Spondyloepiphyseal dysplasia tarda: A rare genetic disorder characterized by short stature and skeletal abnormalities which are usually not apparent before 12 years.
• Spondyloepiphyseal dysplasia tarda progressive arthropathy: A rare genetic disorder where abnormal bone development primarily involves the spine and epiphyses (end of long bones where growth occurs). Progressive arthropathy (joint disease) also affects most joints.
• Spondyloepiphyseal dysplasia tarda, autosomal dominant: A rare genetic disorder where abnormal bone development primarily involves the spine and epiphyses (end of long bones where growth occurs).
• Spondyloepiphyseal dysplasia, congenita: A rare genetic bone growth disorder characterized by prenatal growth deficiency, myopia and short trunk.
• Spondylometaphyseal dysplasia, Kozlowski type: A rare genetic disorder characterized by reduced calcification of the spine and pelvis resulting in short stature.
• Spondylometaphyseal dysplasia, Sedaghatian type: A very rare syndrome characterized by abnormal bone development with short arms and flattened vertebrae. Death usually occurs within days of birth.
• Spondylosis: Spinal degeneration of the discs or spinal joints
• Spongiform encephalopathy: A rare inherited prion disease which has a range of manifestations resulting primarily from degeneration of the nervous system.
• Spotted water hemlock poisoning: Spotted water hemlock is a flowering plant that bears clusters of small, white flowers and tends to grow in wetland areas. The plant contains toxic chemicals (cicutoxin, cicutol) is considered very poisonous. The ingestion of even a bite of the root can result in rapid death in children.
• Sprain: an injury which occurs to ligaments caused by a sudden overstretching.
• St. Anthony's fire: Very painful burning sensation in the arms and legs caused by excessive exposure to ergotamines. Ergotamines are produced by particular fungi. It is also a drug used for such things as migraine controls and to induce abortions. Ergotamines result in the constriction of blood vessels which can result in tissue death (gangrene) and is also toxic to nerves.
• Stachybotrys chartarum: A toxic black slimy mold that can be found in damp indoor environments. Exposure can occur through the skin, ingestion or inhalation. It can causes conditions such as "sick building syndrome".
• Staggerbush poisoning: Staggerbush is a shrubby plant with small pink or white droopy flowers. The plant originated in the US. The leaves and flower nectar contain andromedotoxin which is very poisonous if eaten. Severe poisoning can result in death.
• Startle epilepsy: A form of epilepsy which is triggered by hearing a sudden unexpected stimulus such as a sudden sound. The seizures usually last less than 30 seconds and can occur numerous times during the day. The seizure involves a startle response followed by stiffening of the muscles for a short period of time. Muscle jerking may also be involved and falls are common. These types of seizures are extremely difficult to treat and tend to occur in patients with damage to the brain and intellectual handicap. These seizures often occur in Downs syndrome patients.
• Stevenson-Carey syndrome: A rare syndrome involving various congenital abnormalities and mental retardation.
• Stiff arm: Reduced mobility or movement of the arm
• Stiff back: Reduced mobility or movement of the back
• Stiff elbow: Stiffness of the elbow joint
• Stiff hip: Stiffness in the hip region
• Stiff joints: Reduced mobility or movement of the joints
• Stiff knee: Stiffness of the knee joint
• Stiff leg: Reduced mobility or movement of the leg
• Stiff muscles: A condition which occurs when a person has muscles which feel stiff
• Stiff neck: Reduced mobility of the neck
• Stiff shoulder: Reduced mobility or movement of the shoulder
• Stiff skin syndrome: A rare inherited disorder characterized mainly by very stiff, thick skin that can affect the ability to move joints.
• Stiff thigh: Stiffness of the thigh area
• Stiff-Person Syndrome: A very rare progressive neurological disorder involving muscle tightness and painful muscle spasms.
• Stiffness: Reduced mobility or movement
• Still's Disease, Adult-Onset: A form of arthritic inflammation characterized by fever, rash and joint pain that occurs in adults. The cause is unknown.
• Stratton-Parker syndrome: A very rare syndrome characterized by short stature, heart positioned on the wrong side of the chest (dextrocardia) and a bone development anomaly.
• Streptococcal Group B invasive disease: Infection with bacteria called Group B Streptococcus which can cause severe symptoms or even death. The bacteria occur in the stomach and the urogenital tract of females and are normally harmless and cause no symptoms. However, it can cause a range of diseases in newborns, the elderly and people with poor immune systems.
• Striatonigral degeneration infantile: A genetic neurological disorder caused by progressive damage to a part of the brain called the striatum.
• Stroke symptoms: Brain-related symptoms of bleeding or blockage.
• Sturge-Weber Syndrome: A rare genetic disorder characterized by excessive blood vessel growth, calcium accumulation inside the brain and seizures.
• Subacromial bursitis: Inflammation of a pouch of synovial fluid which is located in the shoulder. It is most often caused by some sort of trauma or overuse of the shoulder. It is difficult to distinguish between subacromial bursitis and rotator cuff injury.
• Subacute Sclerosing Panencephalitis: A progressive neurological disorder involving inflammation of the brain caused by a complication of the measles virus. It can occur up to 10 years after the initial measles virus and may be due to a defective immune response to the virus or a reactivation of the virus.
• Subacute sclerosing leukoencephalitis: A rare chronic form of brain inflammation that is associated with the measles virus. The patient usually appears to have a full recovery after the measles infection with symptoms developing usually between two and eight years after the infection. The condition tends to affect children and young adults mainly. The disease process involves the degeneration of the protective nerve sheaths (myelin) in the brain. Measles immunization is the most effective way of preventing the development of this complication of measles.
• Subarachnoid hemorrhage: subarachnoid hemorrhage is bleeding in the area between the brain and the thin tissues that cover the brain. This area is called the subarachnoid space
• Subcortical laminar heterotopia: A rare inherited disorder where a part of the brain tissue is misplaced during development. More specifically, the abnormal tissue is found in the subcortical part of the brain.
• Subdural hematoma: A condition which is characterized by a blood clot beneath the dura mater
• Subependymal nodular heterotopia: A rare inherited disorder where a part of the brain tissue is misplaced during development. More specifically, nodules of the abnormal tissue is found in the subependymal part of the brain.
• Substance Withdrawal Syndrome: Symptoms that occur when drug use is discontinued or reduced in dosage. The term covers withdrawal from smoking and alcohol as well as therapeutic and recreational drugs. Symptoms may vary depending on the drug involved and the level of dependence.
• Sudden Arrhythmia Death Syndrome: A genetic heart disorder characterized by an abnormal heart rhythm which can result in sudden death in otherwise healthy people. It is caused by a genetic defect which affects the hearts electrical activity. Examples of disorders that can cause lethal heart rhythm abnormalities are Long QT syndrome, Brugada syndrome, certain drugs, idiopathic ventricular fibrillation and sodium channel disease.
• Sudden extreme slowness of movement:
• Sugarman syndrome: A rare genetic disorder characterized by oral frenula, oral clefts, underdeveloped nose flaps and finger, teeth and eye abnormalities.
• Sulfite oxidase deficiency:
• Superficial siderosis of the central nervous system: A rare disorder where hemosiderin (free iron) is deposited in parts of the central nervous system (brain and spinal cord tissue). It is often caused by repeated periods of bleeding in the brain (subarachnoid space).
• Susceptibility to Celiac Disease 1: Susceptibility to celiac disease 1 is a term allocated to a genetic defect on a particular chromosome (chromosome 6p21.3) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 10: Susceptibility to celiac disease 10 is a term allocated to a genetic defect on a particular chromosome (chromosome 3q25-q26) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 11: Susceptibility to celiac disease 11 is a term allocated to a genetic defect on a particular chromosome (chromosome 3q28) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 12: Susceptibility to celiac disease 12 is a term allocated to a genetic defect on a particular chromosome (chromosome 6q25) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 13: Susceptibility to celiac disease 13 is a term allocated to a genetic defect on a particular chromosome (chromosome 12q24) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 2: Susceptibility to celiac disease 2 is a term allocated to a genetic defect on a particular chromosome (chromosome 5q31-q33) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 3: Susceptibility to celiac disease 3 is a term allocated to a genetic defect on a particular chromosome (chromosome 2q33) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 4: Susceptibility to celiac disease 4 is a term allocated to a genetic defect on a particular chromosome (chromosome 19p13.1) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 5: Susceptibility to celiac disease 5 is a term allocated to a genetic defect on a particular chromosome (chromosome 15q11-q13) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 6: Susceptibility to celiac disease 6 is a term allocated to a genetic defect on a particular chromosome (chromosome 4q27) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 7: Susceptibility to celiac disease 7 is a term allocated to a genetic defect on a particular chromosome (chromosome 1q133) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 8: Susceptibility to celiac disease 8 is a term allocated to a genetic defect on a particular chromosome (chromosome 2q11-q12) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Susceptibility to Celiac Disease 9: Susceptibility to celiac disease 9 is a term allocated to a genetic defect on a particular chromosome (chromosome 3p21) which makes a patient more susceptible to developing celiac disease. However, it is important to note that having the genetic anomaly does not mean a person will definitely develop celiac disease. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Sweetshrub poisoning: The sweetshrub is a large deciduous shrub which bears brownish-red flowers and seeds enclosed in a thick fiber casing. The plant may be found growing in the wild or in gardens as an ornamental plant. The crushed leaves have a strawberry odor. The seeds contain chemicals (calycanthin, alkaloids) which can cause symptoms if eaten in large quantities. The ingestion of large quantities by patients with underlying heart problems is more likely to cause symptoms.
• Sydenham chorea: Brain disease causing involuntary movements or spasms.
• Sydenham's chorea: A condition which is self limiting and is characterized by involuntary movements
• Sylvester (P.E.) syndrome: A rare syndrome characterized by deafness, eye problems and Friedreich ataxia which causes progressive nervous system damage resulting in muscle and neurological symptoms.
• Symmetrical thalamic calcifications: A very rare disorder involving the calcification of a part of the brain called the thalamus which results in various abnormalities.
• Syncope: Loss or interruption of consciousness.
• Synovial osteochondromatosis: A rare joint disorder where some of the tissue that lines the joint is replaced by bone-like tissue or cartilage. Usually only one joint is affected and it tends to be the knee, elbow or hip
• Syphilis: A sexually transmitted disease caused by a bacteria (Treponema pallidum). The condition is often asymptomatic in the early stages but one or more sores may be present in the early stages. Untreated syphilis usually results in remission of visible symptoms but further severe damage may occur to internal organs and other body tissues which can result in death.
• Syphilitic aseptic meningitis: A chronic syphilis infection which affects the nervous system.
• Syringomelia: A rare disorder characterized by the presence of cavities in the spinal cord which are filled with cerebrospinal fluid. The condition may occur for no apparent reason (primary) or may have a known causes (secondary) such as Chiari malformation, posttraumatic spinal canal compression, posttraumatic myelomalacia, intraspinal tumor or postinfective arachnoiditis. The severity of the condition is greatly variable with some people remaining generally asymptomatic whereas others suffer disability and require surgical intervention.
• Syringomyelia: Spinal cord cysts
• Syringomyelia, cervical lesion: A slowly-progressing neurological disorder characterized by a fulid-filled cavity in the spinal cord in the neck region.
• Syringomyelia, lumbar lesion: A slowly-progressing neurological disorder characterized by a fluid-filled cavity in the spinal cord in the region between the lower ribs and pelvis.
• T-cell acute lymphoblastic leukemia: Cancer of particular white blood cells called T-cells. Precursors to white blood cells are called blasts and are made by the bone marrow but in ALL the blasts are abnormal and do not develop into lymphocytes. Instead, the abnormal blasts or leukemic cells multiply rapidly and reduce the level of other types of blood cells such as red blood cells and platelets.
• TAU syndrome: A very rare syndrome characterized mainly by reduced blood platelet level and absent ulna bone (forearm bone).
• Tacrine toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Tansy poisoning: Tansy is a herbaceous plant which bears clusters of small yellow flowers. It can be found growing in the wild as well as in gardens. The leaves and flowers contain a chemical called thujone which can cause symptoms if large quantities are eaten. Small quantities are considered safely edible.
• Tapioca poisoning: Tapioca is a shrubby plant which bears inconspicuous flowers. The tubers contain chemicals (cyanogenic glycosides) which are turned into cyanide by the digestive process. Ingestion of the raw roots of this plant can result in death if sufficient quantities are eaten. The tubers are edible if they are boiled first. Toxicity varies within the species depending on growing conditions and other factors.
• Tardive dyskinesia: The toxic neurological side effects of neuroleptic drugs that have been used long term.
• Tarpon poisoning (clupeotoxin): Some tarpon contain toxins (Clupeotoxin) which can be poisonous to humans if eaten. Heat does not destroy the toxin and there is still uncertainty as to the origin of the toxin. The toxin appears to be present in higher concentrations in summer and is believed to be possible linked to the consumption of toxic food in its food web. The size and age of the tarpon does not appear to be related to the toxicity. The tarpon are found in coastal waters off Africa and the Caribbean, Indian and Pacific Oceans.
• Taurodontism and disproportionate short stature: A rare syndrome characterized by the association of short stature, a tooth anomaly (taurodontism - large tooth pulp chamber) and vertebral and iliac abnormalities.
• Tay Sachs: Rare genetic disease leading to fatty deposits in the brain.
• Tay Sachs Disease: A condition which is causes GM2 gangliosidosis
• Tay-Sachs disease - juvenile onset: A rare inherited biochemical disorder involving the deficiency of an enzyme called Hexosaminidase A. There are two forms of the disease - juvenile and adult onset.
• Telencephalic leukoencephalopathy: Neurological disease of the brain where the protective sheaths covering the nerves in the brains are destroyed or fail to develop properly.
• Temporal arteritis: Inflamed head artery causing headache.
• Temporo-mandibular ankylosis: A disorder involving stiffness or fusion of the jaw joint which affects the ability of the jaw to open and close normally. The condition may occur congenitally or may be acquired through such things as trauma.
• Tension myositis related fibromyalgia: Tension myositis related fibromyalgia refers to fibromyalgia that is associated with tension myositis. Fibromyalgia is a chronic condition characterized mainly by pain mainly in the muscles which involves no associated damage to the tissues. Tension myositis is a chronic pain syndrome that tends to mainly affect the back, neck, arm and pelvis.
• Tetanus: A disease caused by chemicals which are produced by a bacterium (clostridium tetani) and are toxic to the nerves. The infection usually occurs when the bacteria enter the body through a deep wound - these bacteria are anaerobic and hence don't need oxygen to survive.
• Tetany: Involuntary cramps of the muscles caused by low blood calcium levels.
• Tethered Spinal Cord Syndrome: Spinal cord condition from abnormally stretched spinal cord.
• Tetrahydrobiopterin deficiencies: A rare genetic disorder where insufficient levels of tetrahydropterin leads to a build up of phenylalanine in the blood which can cause toxic side effects such as nerve damage or even brain damage. The condition does not usually cause any significant symptoms.
• Thalamic degeneration symmetrical infantile: A very rare brain disorder characterized by abnormal brain development, seizures, respiratory distress and movement disorders.
• Thalamic degenerescence infantile: A rare genetic brain disorder.
• Thanatophoric dysplasia, type 1: A rare lethal genetic disorder characterized by severe skeletal abnormalities, flat vertebrae, large head and low nasal bridge.
• Thanatophoric dysplasia, type 2: A rare lethal genetic disorder characterized by severe skeletal abnormalities, flat vertebrae, large head and low nasal bridge.
• Thigh Spasm: Involuntary muscle movements in the thigh.
• Thigh conditions: Any condition that affects the thigh
• Thigh injury: Any injury to the thigh
• Thigh muscle strain: Damage to the thigh muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Thiolase deficiency: A rare syndrome involving a deficiency of an enzyme called thiolase which results in mental retardation and muscle problems.
• Thomas-Jewett-Raines syndrome: A very rare syndrome characterized mainly by small eyes, small ears and a lack of fetal movement.
• Thompson-Baraitser syndrome: A very rare syndrome characterized mainly by liver fibrosis, kidney cysts and mental retardation.
• Thoracic dysplasia - hydrocephalus syndrome: A very rare syndrome characterized by abnormal chest development and excess fluid inside the skull.
• Thrombocythemia: A haematological disorder in which there is excessive proliferation of platelet precursor cells, resulting in increased numbers of platelets in the blood.
• Thrombocytopenia - cerebellar hypoplasia - short stature: A very rare syndrome characterized mainly by short stature, low blood platelets and abnormal brain development.
• Thrombotic thrombocytopenic purpura, acquired: A rare blood condition where small blood clots form in blood vessels which reduces the number of blood platelets and results in kidney failure, neurological symptoms and anemia. The condition may be familial or acquired - symptoms tend to recur regularly in the familial form.
• Thrombotic thrombocytopenic purpura, congenital: A rare blood condition where small blood clots form in blood vessels which reduces the number of blood platelets and results in kidney failure, neurological symptoms and anemia.
• Thyrocerebral-retinal syndrome: A very rare syndrome observed in a brother and sister and characterized by thyroid, kidney and neurological disease.
• Thyroid disorders: Any disorder of the thyroid gland.
• Tic: Abnormal body twitch or sudden movement
• Tick-borne encephalitis: A viral infection (flavivirdae) of the central nervous system which is transmitted by ticks. Ticks usually feed on small rodents who are the main carriers of the virus. Transmission may also occur through the consumption of untreated milk. The incubation period is usually 1 to 2 weeks. The symptoms occur in two phases: the first involves symptoms of a general viral illness (fever, headache, nausea, aching muscles) followed by a period of remission and then central nervous system inflammation such as meningitis. However, many patients only suffer the first phase of the disease.
• Tics: A condition which is characterized by an involuntary, compulsive, rapid and repetitive movement
• Todd's Paralysis: Recurrent episodes of seizure and paralysis.
• Toe Osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the toe joints as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Togaviridae disease: Infection with any of a number of togaviridae viruses which can caused conditions such as Equine encephalitis, Ross River virus and Rubella virus. Symptoms are determined by the type of virus involved. Togaviridae are arboviruses and are transmitted by arthropods.
• Tolterodine toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Tome-Brune-Fardeau syndrome: A rare syndrome involving neurological impairment which manifests as movement disorders and dementia.
• Tonic seizure: Abnormal electrical activity in a part of the brain which results mainly in muscle stiffness and rigidity. Tonic seizures are considered relatively uncommon. They can occur at any age but are more common in childhood. Patients with Lennox-Gastaut syndrome or multiple sclerosis are particularly susceptible to this type of seizure. Episodes usually only last for a matter of minutes and recovery can vary from minutes to hours.
• Tonic-clonic seizure: formerly known as grand mal seizures. It involves the entire body causing muscle contraction and loss of consciousness
• Torsion dystonia: A movement disorder where the muscles contract and contort uncontrollably due to neurological dysfunction.
• Torsion dystonia 7: A rare inherited movement disorder where the patient suffers involuntary muscle contractions and distortion of body position. Usually the onset of symptoms is focused on one part of the body, usually the neck, eyes or hands.
• Torsion dystonia with onset in infancy: A rare inherited movement disorder where the patient suffers involuntary muscle contractions and distortion of body position. The disorder occurs during infancy and tends to affect the legs severely and the face and arms to a lesser degree.
• Torsion dystonia, X-linked: An inherited movement disorder where the muscles contract and contort uncontrollably due to neurological dysfunction. The first symptom in this form is spasmodic eye blinking.
• Torsion dystonia, autosomal dominant: An inherited movement disorder where the muscles contract and contort uncontrollably due to neurological dysfunction. Neck and torso muscle are affected first and progression is slower and occurs over a longer period of time than in the autosomal recessive form.
• Torsion dystonia, autosomal recessive: An inherited movement disorder where the muscles contract and contort uncontrollably due to neurological dysfunction. Muscle contractures start in the hands and feet and spread quickly to the trunk and extremities. Progression tends to slow down during adulthood.
• Tourette Syndrome: A neurological disorder involving vocal and movement tics where where uncontrollable movements or verbal utterances are made.
• Toxic mushrooms - Anticholinergic: Some mushrooms contain a toxic chemical called ibotenic acid which causes anticholinergic symptoms. Ibotenic acid is converted to muscimol during digestion. The two toxins have opposing actions which results in initial excitation symptoms followed by a prolonged coma-like sleep. Mushroom species from this group include certain species of Amanita sp. - cothurnata, crenulata, frostiana, gemmata, muscaria and pantherina. Eating two to four mushrooms can result in impaired senses and eating more than twenty usually results in death.
• Toxic mushrooms - Monomethylhydrazine: Some mushrooms contain a toxic chemical called gyromitrin which is converted to monomethylhydrazine after digestion. Mushroom species from this group include certain species of Gyromitra, Helvella, Sarcosphaera and Peziza. Poisoning may occur from inhaling fumes from cooking mushrooms. The amount of toxin varies amongst and within species but some are toxic enough to cause death. Urgent medical attention should be sought if mushroom poisoning is suspected.
• Toxic mushrooms - Psychedelic: Some mushrooms contain chemicals called psilocybin and psilocin which produce effects similar to LSD. Mushroom species from this group include certain species of Conocybe syanopus, Conocybe spectabilis, Gymnopilus, Panaeolus, Pluteus, Psilocybe and Stropharia. About five dried mushroom caps can result in hallucinations.
• Toxic mushrooms - cyclopeptides: Some mushrooms contain a toxic chemical called cyclopeptide which can cause primarily gastrointestinal symptoms if ingested. Most cases of mushroom poisoning in North America involve cyclopeptide-containing mushrooms. Mushroom species from this group include certain species of Amanita (bisporigera, ocreata, phalloides, suballiacea, tenufolia, verna, virosa), Galerina and Lepiota. One Amanita mushroom cap may result in death in an adult. Poisoning occurs in three phases: gastrointestinal symptoms (within 24 hours of ingestion); remission (up to 72 hours after ingestion); and liver and kidney symptoms (3 to 6 days after ingestion). Poisoning symptoms are more severe in children due to their smaller body size.
• Toxic polyneuropathy - Amiodarone: Use of a cardiovascular drug called Amiodarone may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Amiodarone tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Amitriptyline: Use of drug called Amitriptyline may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Amitriptyline tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Amphotericin: Use of drug called Amphotericin may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Amphotericin tends to primarily affect muscle movement (motor neuropathy).
• Toxic polyneuropathy - Carbutamide: Use of drug called Carbutamide may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Carbutamide tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Chlorambucil: Use of a cancer drug called Chlorambucil may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Chlorambucil tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Chloroquine: Use of an antirheumatic drug called Chloroquine may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Chloroquine tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Chlorpropamide: Use of drug called Chlorpropamide may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Chlorpropamide tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Clioquinol: Use of an antimicrobial drug called Clioquinol may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Clioquinol tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Clofibrate: Use of a cardiovascular drug called Clofibrate may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Clofibrate tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Colchicine: Use of an antirheumatic drug called Colchicine may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Colchicine tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Disopyramide: Use of a cardiovascular drug called Disopyramide may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Disopyramide tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Disulfiram: Use of drug called Disulfiram may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Disulfiram tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Ethambutol: Use of an antimicrobial drug called Ethambutol may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Ethambutol tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Ethoglucid: Use of a drug called Ethoglucid may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Ethoglucid tends to cause mainly localized neuropathy.
• Toxic polyneuropathy - Glutethimide: Use of drug called Glutethimide may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Glutethimide tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Gold: Therapeutic use of gold to treat rheumatism may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). The nerve toxicity of the substance may vary amongst people - tolerance level to the drug varies amongst people. Gold tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Hydrallazine: Use of a cardiovascular drug called Hydrallazine may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Hydrallazine tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Indomethacin: Use of an antirheumatic drug called Indomethacin may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Indomethacin tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Isoniazid: Use of an antimicrobial drug called Isoniazid may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Isoniazid tends to primarily affect sensation and muscle movement (sensorimotor neuropathy). B6 supplements may help prevent the neuropathy.
• Toxic polyneuropathy - Methaqualone: Use of drug called Methaqualone may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Methaqualone tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Methimazole: Use of drug called Methimazole may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Methimazole tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Metronidazole: Use of an antimicrobial drug called Metronidazole may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Metronidazole tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Mustine: Use of a drug called mustine may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Mustine tends to mainly cause localized neuropathy.
• Toxic polyneuropathy - Nitrofurantoin: Use of an antimicrobial drug called Nitrofurantoin may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Nitrofurantoin tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Perhexiline: Use of a cardiovascular drug called Perhexiline may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Perhexiline tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Phenylbutazone: Use of an antirheumatic drug called Phenylbutazone may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Phenylbutazone tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Phenytoin: Use of drug called Phenytoin may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Phenytoin tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Podophyllum: Use of a cancer drug called Podophyllum may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Podophyllum tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Streptomycin: Use of an antimicrobial drug called Streptomycin may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Streptomycin tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Sulphonamide: Use of Sulphonamide drugs may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Sulphonamide tends to primarily affect muscle movement (motor neuropathy).
• Toxic polyneuropathy - Thalidomide: Use of drug called Thalidomide may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Thalidomide tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Tolbutamide: Use of drug called Tolbutamide may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Tolbutamide tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxic polyneuropathy - Vincristine: Use of a cancer drug called Vincristine may cause damage to the peripheral nervous system (neuropathy) as it can have a toxic effect on the nerves. Symptoms usually start in the outermost parts of the body such as the fingers and toes and moves towards the centre of the body. Usually more than one nerve is affected (polyneuropathy). Tolerance to the drug may vary amongst people with the elderly and other susceptible people having lower thresholds before nerve problems occur. Vincristine tends to primarily affect sensation and muscle movement (sensorimotor neuropathy).
• Toxoplasmosis: Infection often caught from cats and their feces.
• Tramadol toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Tranebjaerg-Svejgaard syndrome: A rare syndrome characterized mainly by mental retardation, seizures and a skin disorder.
• Tranquilizer withdrawal: Symptoms that occur when tranquilzer use is discontinued or reduced. Symptoms may vary depending on the level of dependence. Tranquilizers includes benzodiazepines such as valium, rohypnol and serepax.
• Transthyretin amyloidosis: Amyloidosis is a rare group of metabolic disorders where a protein called amyloid accumulates in body organs and tissues where it can cause damage. In the transthyretin form, the amyloid protein consists of transthretin. The condition is characterized by slo-progressing peripheral sensorimotor and autonomic neuropathy, kidney disease and heart disease. Abnormal amyloid deposits may also occur in the eyes and central nervous system. There are a number of subtypes of the disorder: familial oculoleptomeningeal amyloidosis, familial amyloid polyneuropathy and familial amyloid cardiomypathy as well as others. Neuropathic symptoms tend to start in the legs. Symptoms may vary depending on which parts of the body are affected.
• Transverse myelitis: Inflammation of the spinal cord which results in various neurological and muscle symptoms. The inflammation can occur for no obvious reason or may result from a virus, bacterial infection, autoimmune disease or vaccination. The type and severity of symptoms is determined by the location and degree of inflammation.
• Traumatic Brain Injury: Brain injury from trauma or accident.
• Tremor: The occurrence of involuntary trembling
• Tricep muscle strain: Damage to the tricep muscle in the arm due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Triggerfish poisoning (Palytoxin): Palytoxin is a marine toxin found in some triggerfish from the Philippines region. The toxin is extremely potent and death is common in patients who ingest contaminated triggerfish.
• Triose phosphate-isomerase deficiency: A very rare inherited condition involving a deficiency of triose phosphate-isomerase.
• Triosephosphate isomerase 1: A rare inherited blood disorder involving a deficiency of red cell triosephosphate isomerase which is involved in the glycolysis (glucose metabolism) process to produce energy. The disorder is characterized by anemia, recurring infection and often progressive neurological degeneration. The severity of the disorder is variable with some patients having central nervous system involvement while others don't.
• Trisomy 13 mosaicism: A very rare chromosomal disorder where there is an extra copy of chromosome 13 in some of the body's cells. Some cases with this chromosomal abnormality have no clinical symptoms. The presence of abnormalities in some cases is dependent on which body cells contain the chromosomal defect. There appears to be a direct correlation between the number of cells in the body containing the chromosomal defect and severity of symptoms and survival.
• Trisomy 8 mosaicism: A very rare chromosomal disorder where there is an extra copy of chromosome 8 in some of the body's cells. Some cases with this chromosomal abnormality have no clinical symptoms. The presence of abnormalities in some cases is dependent on which body cells contain the chromosomal defect.
• Trochanteric bursitis: Inflammation of the trochanteric bursa which is a pouch of synovial fluid which is located in the hip. The inflammation is most often due to overuse and excessive pressure but may also result from injury or rheumatoid arthritis.
• Trumpet flower poisoning: The trumpet flower is a flowering vine-like plant that bears fairly large, colorful, trumpet-shaped flowers. It is often grown in gardens as an ornamental plant. The leaves and flowers of the plant contain chemicals (solanine, solanidine) which are highly toxic. Ingestion of sufficient flowers and leaves can result in death.
• Tsao-Ellingson syndrome: A very rare syndrome characterized mainly by spasms during infancy and broad thumbs.
• Tubatoxin poisoning: Tubatoxin is a naturally occurring chemical found in certain plants (Derris and Lonchocarpus sp.). It gives the plant insecticidal and pesticidal properties and is hence utilized commercially as an insecticide. Ingestion and other exposures to the chemical can cause various symptoms. Inhalation tends to cause more severe symptoms than ingestion. The type and severity of symptoms varies depending on the amount of chemical involved and the nature of the exposure.
• Tuberculous meningitis: Tuberculous meningitis is an infection of the membranes covering the brain and spinal cord caused by Koch's bacillus.
• Tuberous sclerosis: A rare genetic disorder characterized by harmartomatous skin nodules, seizures, phakomata and bone lesions.
• Tuberous sclerosis, type 1: A rare genetic disorder with a variety of abnormalities such as seizures, mental retardation, skin lesions and nodules in various body tissues and organs.
• Tuberous sclerosis, type 2: A rare genetic condition characterized by mental and physical retardation, seizures and numerous benign tumors that can occur on the skin or in organs. The severity of symptoms can vary greatly depending on where the tumors occur.
• Turner Syndrome: Rare chromosome syndrome with one X but no second X or Y chromosome.
• Turner syndrome associated Celiac Disease: Females with Turner syndrome are more susceptible to developing celiac disease than the average population. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Twitches: Involuntary sudden movements of part of the body
• Type 1 diabetes related Celiac Disease: Patients with Type 1 diabetes are more susceptible to developing celiac disease than the average population. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Type 10 17b-hydroxysteroid dehydrogenase deficiency: A rare genetic disorder involving the deficiency of an enzyme (hydroxyacyl-coa dehydrogenase). The severity of the symptoms is highly variable with some cases resulting in death during the first decade while others suffer psychomotor and regression. Symptoms tend to be more severe in males who suffer progressive neurodegeneration whereas females tend to suffer mainly from developmental delay.
• Tyrosinemia, type III: A very rare genetic metabolic disorder characterized by a deficiency of particular enzymes which prevents the breakdown of tyrosine which then builds up in the liver. Type III involves a deficiency of the enzyme 4-hydroxyphenlypyruvate dioxygenase.
• UDP-Galactose-4-epimerase deficiency: A condition which is characterised by a mutation in the UDP-galactose-4-epimerase gene.
• Ultram overdose: Ultram is a drug used to treat or prevent pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Unconsciousness: A condition which is characterized by impaired consciousness
• Unresponsiveness: Poor response to questions or actions
• Unusual facies, renal and Mullerian hypoplasia and severe somatic and mental retardation: A rare syndrome characterized mainly by underdeveloped kidneys and Mullerian structures, unusual facial appearance and severe somatic and mental retardation.
• Unusual facies, short stature, enamel hypoplasia, stiff joints and high-pitched voice: A rare syndrome characterized mainly by short stature, stiff joints, unusual facial appearance, high-pitched voice and underdeveloped tooth enamel.
• Upper arm muscle strain: Damage to the upper arm muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Upper arm spasm: A sudden involuntary contraction of a muscle or of muscles of the upper arm
• Upper back muscle strain: Damage to the upper back muscle due to over-stretching of the muscle tissue. The damage involves tearing the muscle tissue. Small blood vessels may also be damaged which can cause bruising. The symptoms may vary from mild to severe depending on the severity of the damage.
• Upper motor neuron weakness: Muscle weakness caused by neurological problems.
• Upton Young syndrome: A syndrome which is characterised by the association of multiple symptoms including mental retardation and multiple nevi
• Urban Roger Meyer syndrome: A syndrome which is characterised by genital anomalies, mental retardation, and obesity
• Urban rogers meyer syndrome: A rare syndrome characterized by mental retardation, short stature, hand contractures, genital anomalies and other abnormalities.
• Urea Cycle Disorders: Any disorder that affects the urea cycle.
• Uremia: Build up of toxins usually excreted by the kidneys, associated with real failure in a woman who is pregnant.
• Vagneur Triolle Ripert syndrome: A condition that is characterised by lymphoedema of the lower extremities and recurrent respiratory system problems
• Van Bogaert disease: A rare inherited condition where cholesterol is deposited in the brain and other parts of the body. The disease is classified as a lipid storage disorder due to the abnormal deposition of cholesterol and cholestanol in various parts of the body - especially the brain, lungs and Achilles tendon. The condition is possibly highly underdiagnosed.
• Van Bogaert's disease: A rare inherited condition where cholesterol is deposited in the brain and other parts of the body. The disease is classified as a lipid storage disorder due to the abnormal deposition of cholesterol and cholestanol in various parts of the body - especially the brain, lungs and Achilles tendon. The condition is possibly highly underdiagnosed.
• Van Bogaert-Scherer-Epstein Disease: A rare inherited condition where cholesterol is deposited in the brain and other parts of the body. The disease is classified as a lipid storage disorder due to the abnormal deposition of cholesterol and cholestanol in various parts of the body - especially the brain, lungs and Achilles tendon. The condition is possibly highly underdiagnosed.
• Vanishing white matter leukodystrophy: Degeneration of the brain white matter. The condition tends to progress relatively slowly but a sudden deterioration of symptoms can occur after a head trauma or an illness involving fever. Some degree of recovery can occur after the sudden deterioration but other cases can result in coma and death. Survival is possible into the third decade.
• Variant CJD: New human CJD subtype linked to mad cow disease (BSE).
• Variant Creutzfeldt-Jakob disease: The bovine spongiform encephalopathy affects cattle but the variant form can infect humans. Human infection can occur by consuming infected cattle products, especially the brain and other central nervous system tissues.
• Varicella virus antenatal infection: The infection of a mother with the varicella virus whilst she is pregnant
• Vascular malformations of the brain: Conditions affecting the brain blood vessels. The type and severity of symptoms is determined by the type, location and extent of the malformation. There are six types of vascular malformations of the brain: telangiectasis, venous malformations, cavernous malformations, arteriovenous malformations, vein of Galen malformation and mixed malformations.
• Vasculitis hypersensitivity: A condition which is characterised by a reaction that results in the inflammation of the blood vessels
• Vein of Galen aneurysm: A rare condition which is characterised by an aneurysm resulting from a intracranial vascular malformation
• Velocardiofacial syndrome: A genetic disorder which can present with a wide range of phenotypic manifestations which has lead to a number of different names being assigned to the various presentations e.g. DiGeorge Syndrome and Cayler Anomaly Face Syndrome. There are nearly 200 different symptoms that can occur and the severity of the condition is also highly variable depending on the nature and severity of the symptoms that are present.
• Venlafaxine toxicity: The toxic reaction of the body to the substance, possibly via allergic reaction or overdose.
• Ventricular tachycardia, catecholaminergic polymorphic, 1: A very rare inherited heart disorder involving an abnormal heart rhythm in an apparently otherwise normal heart. Sudden death can occur readily. Symptoms such as fainting and seizures can be triggered by strenuous physical activity or sudden excitement. Type 1 is caused by a defect in the RYR2 gene on chromosome 1q42.1-q43.
• Ventricular tachycardia, catecholaminergic polymorphic, 2: A very rare, recessively inherited heart disorder involving an abnormal heart rhythm in an apparently otherwise normal heart. Sudden death can occur readily. Symptoms such as fainting and seizures can be triggered by strenuous physical activity or sudden excitement. Type 2 is caused by a defect in the CASQ2 gene on chromosome 1p13.3-p11.
• Vicodin overdose: Vicodin is a prescription drug used to pain. Excessive doses of the drug can result in various symptoms and even death in severe cases.
• Viral hemorrhagic fever: A group of diseases caused by viruses which cause damage to blood vessels and result in hemorrhages and fever. The hemorrhaging does not always cause serious bleeding. The specific symptoms may vary depending on which particular virus is involved.
• Vitiligo mental retardation facial dysmorphism uremia: A condition that is characterised by a number of symptoms including mental retardation, facial dysmorphism and uremia
• Vocal cord dysfunction familial: A rare inherited disorder where the vocal cord closes while breathing in which causes breathing difficulty which can be severe in some cases. Mental retardation is also associated.
• Von Gierke Disease: An inherited metabolic disorder where a deficiency of the enzyme glucose-6-phosphatase prevents glycogen being turned into glucose leading to a buildup of glycogen in the liver and kidneys.
• W syndrome: A rare genetic disorder involving distinctive facial features, mental retardation, speech problems and limb deformities.
• WAGR Syndrome: A syndrome that is due to the deletion of chromosome 11.
• Walker-Warburg Syndrome: A rare inherited disorder characterized by brain malformations and retinal and muscle abnormalities.
• Wallenberg's Syndrome: A rare neurological condition caused by a stroke (involving the cerebellar artery) and resulting in symptoms such as facial paralysis or weakness on one side of body.
• Warfarin syndrome: Various physical and other abnormalities that can result from the use of the drug Warfarin during the first trimester of pregnancy.
• Warman Mulliken Hayward syndrome: This syndrome is a form of craniosynostosis
• Waterhouse-Friderichsen syndrome: The malignant form of cerebrospinal meningitis
• Waterhouse-Friederichsen syndrome: A rare syndrome that occurs as complication of septicemia (often due to meningococcal or pneumococcal infection) and involves blood coagulation in blood vessels, adrenal gland hemorrhages and ultimately kidney failure.
• Weaver Syndrome: A syndrome that is considered a variant of the Marshall-Smith syndrome
• Weaver Williams syndrome: Any condition that affects the testicles
• Wegener's granulomatosis: A rare disease involving blood vessel inflammation which can affect the blood flow to various tissues and organs and hence cause damage. The respiratory system and the kidneys are the main systems affected.
• Wells Jankovic syndrome: A syndrome that is characterised with spastic paraparesis and deafness
• Wernicke-Korsakoff syndrome: A rare degenerative brain disorder caused by thiamine (Vitamin B1) deficiency. Chronic alcoholics are prone to this condition.
• West African Trypanosomiasis: West African sleeping sickness from the tsetse fly
• West Nile fever: Mosquito-borne infectious virus.
• West nile encephalitis: A virus that is of the Flavivirus genus that causes the condition West Nile encephalitis
• Western equine encephalitis: An infectious disease caused by an arbovirus (Alphavirus - Togaviraidae) and transmitted by infected mosquitoes. The infection primarily attacks that central nervous system and severity can range from asymptomatic to severe complications and even death in rare cases.
• Western/Eastern/California encephalitis: A mosquito born virus transmitted to humans and sometimes horses.
• Westphal disease: A condition that is closely associated with Huntington's disease and is a clinical variant of it
• Whiplash: Neck injury often from a car accident.
• Whiplash Injuries: An injury to the neck when the neck is rapidly forced backward and then forwards or vice versa. It most commonly occurs in vehicle accidents when the vehicle is stopped abruptly or pushed forwards suddenly.
• Whiplash pain: Whiplash is when the soft tissues of the neck are injured by a sudden jerking or "whipping" of the head. This type of motion strains the muscles and ligaments of the neck beyond their normal range of motion.
• Whistling face syndrome, recessive form: A rare, recessively inherited syndrome characterized mainly by a characteristic "whistling" face and hand anomalies. The range of symptoms are variable.
• Whooping Cough: An infectious condition caused by the bacteria Bordetella pertussis
• Wiedemann Grosse Dibbern syndrome: A syndrome which is characterized by the association of symptoms such as abnormal facial appearance, short stature and psychomotor retardation.
• Wiedemann-Beckwith syndrome: A rare genetic disorder characterized by an enlarged tongue, omphalocele, excessive birth weight and ear creases.
• Wild Lima bean poisoning: Wild Lima beans are a legume similar to the common lima beans which are considered safe to eat. The wild lima contains much higher levels of a chemical called cyanogen than the common lima bean. The cyanogen can cause symptoms and if sufficient quantities are eaten, death can result. Some people are so sensitive to cyanogen that eating even the relatively safe common lima bean may result in symptoms though usually they are not severe. Cooking destroys the toxic chemical in lima beans. Raw lima bean sprouts should be avoided.
• Wild cherry seed poisoning: Wild cherry seeds contain a chemical called amygdalin which breaks down into cyanide in the human body. The toxic chemicals are not released if the seed remains intact and therefore poisoning usually only occurs if the seeds are crushed and eaten. Accidental ingestion is very unusual.
• William's syndrome associated Celiac Disease: Patients with William's syndrome are more susceptible to developing celiac disease than the average population. Celiac disease is an autoimmune disorder characterized by intolerance to gluten by the small intestine. The type and severity of symptoms varies amongst people - some people have severe gastrointestinal symptoms from infancy whereas other have no symptoms other than fatigue or anemia during adulthood.
• Williams Syndrome: A syndrome characterised by mental retardation, facial abnormalities and emotional instability
• Wilms tumor - aniridia - genitourinary anomalies - mental retardation: A syndrome resulting from deletion of genetic material from chromosome the short arm of chromosome 11 (11p13). The characteristic symptoms are partial or complete absence of iris, genitourinary anomalies, mental retardation and Wilms' tumor. The specific range and severity of symptoms is variable depending on the size and exact location of the genetic material that is missing.
• Wilson's disease: Wilson disease, or hepatolenticular degeneration, is a neurodegenerative disease of copper metabolism.
• Wittwer sydnrome: A syndrome that is characterised by the occurrence of growth retardation, blindness, hearing loss, dysmorphic features, epilepsy, mental retardation and the absence of speech
• Wolcott-Rallison syndrome: A very rare genetic condition characterized primarily by the onset of diabetes mellitus during infancy and epiphyseal dysplasia (abnormal joint development).
• Wolf-Hirschhorn Syndrome: A syndrome which is caused by a partial deletion of the short arm of chromosome 4.
• Wolf-Hirschorn syndrome: A syndrome characterised by the partial deletion of the short arm of chromosome 4
• Wolfram Syndrome 2: Wolfram Syndrome is a condition characterized by the association of diabetes insipidus, diabetes mellitus, optic atrophy and deafness. Type 2 is the result of a genetic defect and is similar to type 1 but there is no diabetes insipidus and patients tend to develop gastrointestinal problems.
• Wolfram Syndrome, Mitochondrial form: A rare association of diabetes insipidus, diabetes mellitus, optic atrophy and deafness which results in mitochondrial defects.
• Wolfram's disease: A condition that is inherited and consists of multiple symptoms
• Wolman syndrome: A form of lipoidosis where acid cholesteryl ester hydrolase deficiency causes an accumulation of lipids (particularly cholesterol esters and triglycerides) in tissues and organs.
• Woods Black Norbury syndrome: A condition that is characterised by immune deficiency in the newborn ultimately resulting in death
• Wrist osteoarthritis: A form of arthritis where the cartilage which cushions the bones in the wrist joint as they move against each other, becomes progressively degraded and damaged. This causes problems such as pain, stiffness and impaired movement. Pain is not present in all cases however, with some patients imply suffering joint stiffness. Primary osteoarthritis occurs as the person ages but results from repetitive use and/or high mechanical stress on the joint. It is not a direct result of the aging process. Secondary osteoarthritis is the result of such things as injury to the joint, joint infection, obesity, ligament damage, joint overuse, hormonal problems, pregnancy and various other conditions. Family history seem to play a factor in developing the condition.
• Wrist spasm: A sudden involuntary contraction of a muscle or of muscles in the wrist.
• Wrist symptoms: Symptoms of the wrist area and joint
• Wyatt disease: A cytomegalus virus infection that occurs before birth.
• X chromosome, duplication Xq13 1 q21 1: A condition characterised by the duplication of the long arm of chromosome X.
• X chromosome, trisomy 26-28: A condition characterised by the duplication of the long arm of chromosome X.
• X chromosome, trisomy Xp3: A condition characterised by the duplication of the long arm of chromosome X.
• X chromosome, trisomy Xpter Xq13: A condition characterised by the duplication of the long arm of chromosome X.
• X chromosome, trisomy Xq: A condition characterised by the duplication of the long arm of chromosome X.
• X chromosome, trisomy Xq25: A condition characterised by the duplication of the long arm of chromosome X.
• X-linked alpha thalassemia mental retardation syndrome (ATR-X): An x-linked condition that features mental retardation, dysmorphic features, and alpha thalassemia
• X-linked hydrocephalus spectrum: A rare genetic disorder characterized by hydrocephalus, short flexed thumbs and mental deficiency.
• X-linked mental retardation - hypotonia: A very rare inherited disorder characterized primarily by mental retardation. Initial symptoms of muscle weakness gives way to spasticity and contractures.
• Xanthid crab poisoning (Palytoxin): Palytoxin is a marine toxin found in some xanthid crabs from the Philippines and Singapore region. The toxin is extremely potent and death is common in patients who ingest contaminated xanthid crabs.
• Xanthomatosis cerebrotendinous: A rare inherited condition where cholesterol is deposited in the brain and other parts of the body. The disease is classified as a lipid storage disorder due to the abnormal deposition of cholesterol and cholestanol in various parts of the body - especially the brain, lungs and Achilles tendon. The condition is possibly highly underdiagnosed.
• Xeroderma pigmentosum: A rare pigmentary disease that is caused by an enzyme deficiency
• Xeroderma pigmentosum, type 1: A rare genetic disorder where the enzyme that repairs DNA damage done by UV radiation is defective. It is characterized by sensitivity to sunlight, skin pigmentation and atrophy and actinic skin tumors. The different types of xeroderma pigmentosum vary in the body's ability to repair the damage to DNA done by UV radiation - type 1 has the lowest level of repair and the most neurological complications.
• Xeroderma pigmentosum, type 2: A rare genetic disorder where the enzyme that repairs DNA damage done by UV radiation is defective. It is characterized by sensitivity to sunlight, skin pigmentation and atrophy and actinic skin tumors. The different types of xeroderma pigmentosum vary in the body's ability to repair the damage to DNA done by UV radiation. Type B is often associated with signs of Cockayne syndrome.
• Yager-Young syndrome: The false belief by a patient that they have low blood sugar because of the symptoms they are experiencing.
• Young McKeever Squier syndrome: A condition that affects the olivopontocerebellum and the cerebellar cortex of the brain
• Zellweger Syndrome: Zellweger spectrum disorders are a group of rare, genetic, multisystem disorders that were once thought to be separate entities. These disorders are now classified as different expressions (variants) of one disease process. Collectively, they form a spectrum or continuum of disease. Zellweger syndrome is the most severe form; neonatal adrenoleukodystrophy is the intermediate form; and infantile Refsum disease is the mildest form.
• Ziehen-Oppenheim syndrome: A very rare genetic condition involving progressive spasming of the muscles causing the body to twist and turn.
• Zunich neuroectodermal syndrome: A very rare genetic syndrome characterized by a range of symptoms such as colobomas of the eye, heart defects, ichthyosiform dermatosis, mental retardation and ear defects.
• Zunich-Kaye syndrome: A very rare genetic syndrome characterized by a range of symptoms such as colobomas of the eye, heart defects, ichthyosiform dermatosis, mental retardation and ear defects.

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