Causes of Lethargy

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Conditions listing medical complications: Lethargy:

The following list of medical conditions have 'Lethargy' or similar listed as a medical complication in our database. This computer-generated list of complications may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

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More Information About Lethargy

• Lethargy: Introduction
• Diagnostic tests for Lethargy
• Diagnosis Checklist: Questions Doctors Should Ask for Lethargy
• Medical Textbooks Online for Lethargy
• Symptom combinations for Lethargy
• Travel-related causes of Lethargy
• Diabetes-related causes of Lethargy
• Patient Surveys
• Join in at the forums

List of 360 causes of Lethargy

This section shows a full list of all the diseases and conditions listed as a possible cause of Lethargy in our database from various sources.

• 2-Hydroxyglutaricaciduria - lethargy
• 2-Methylbutyric Aciduria - lethargy
• 2-methylbutyryl-coenzyme A dehydrogenase deficiency - lethargy
• 3 alpha methylcrotonyl-Coa carboxylase 1 deficiency - lethargy
• 3 alpha methylcrotonyl-coa carboxylase 2 deficiency - lethargy
• 3-alpha-Hydroxyacyl-CoA Dehydrogenase Deficiency - lethargy
• 3-alpha-hydroxyacyl-coenzyme A dehydrogenase deficiency - lethargy
• 3-methylcrotonyl-CoA carboxylase deficiency - lethargy
• Achalasia - adrenal - alacrima syndrome - lethargy
• Acid-Base Imbalance - lethargy
• Acidemia, methylmalonic - lethargy
• Acidemia, propionic - lethargy
• Acquired hypothyroidism - lethargy
• Acquired idiopathic sideroblastic anaemia - lethargy
• Actinomycetales infection - lethargy
• Acute Disseminated Encephalomyelitis - lethargy
• Acute meningitis - Lethargy
• Acute myeloid leukemia - Lethargy
• Acyl-CoA dehydrogenase, short chain, deficiency of - lethargy
• Acyl-CoA dehydrogenase, very long chain, deficiency of - lethargy
• Addison's Disease - lethargy
• Adenocarcinoma of lung - lethargy
• Adenocarcinoma, Bronchiolo-Alveolar - lethargy
• Adrenal hyperplasia, congenital type 3 - lethargy
• African Sleeping sickness - lethargy
• Albright's hereditary osteodystrophy - lethargy
• Alzheimer's disease
• Amotivational syndrome - lethargy
• Anemia, Iron-Deficiency - lethargy
• Anemia, Neonatal - lethargy
• Anemia, Refractory, with Excess of Blasts - lethargy
• Anemia, Refractory, with Excess of Blasts, type 1 - lethargy
• Anemia, Refractory, with Excess of Blasts, type 2 - lethargy
• Aneurysm, intracranial berry - lethargy
• Aneurysm, intracranial berry, 1 - lethargy
• Aneurysm, intracranial berry, 10 - lethargy
• Aneurysm, intracranial berry, 2 - lethargy
• Aneurysm, intracranial berry, 3 - lethargy
• Aneurysm, intracranial berry, 4 - lethargy
• Aneurysm, intracranial berry, 5 - lethargy
• Aneurysm, intracranial berry, 6 - lethargy
• Aneurysm, intracranial berry, 7 - lethargy
• Aneurysm, intracranial berry, 8 - lethargy
• Aneurysm, intracranial berry, 9 - lethargy
• Aneurysmal subarachnoid haemorrhage - lethargy
• Angiofollicular lymph hyperplasia - lethargy
• Antidiarrheal agent poisoning - lethargy
• Aplastic anemia - lethargy
• Apricot seed poisoning - lethargy
• Argininosuccinase lyase deficiency, late onset - lethargy
• Argininosuccinase lyase deficiency, neonatal - lethargy
• Atypical hemolytic uremic syndrome - lethargy
• Autoimmune thyroid diseases - sluggishness
• Bacterial digestive infections - Lethargy
• Bacterial meningitis - Lethargy
• Benign astrocytoma - lethargy
• Biotinidase deficiency - lethargy
• Biotinidase deficiency, late onset - lethargy
• Bipolar disorder - sluggishness
• Bird cherry seed poisoning - lethargy
• Bitter almond seed poisoning - lethargy
• Blastoma - lethargy
• Bone-Marrow failure syndromes - lethargy
• Boron overuse - lethargy
• Brain cancer - Lethargy
• Brain injury
• Bronchiolitis - lethargic
• California encephalitis - lethargy
• Canavan leukodystrophy - lethargy
• Carbamoyl-phosphate synthase 1 deficiency - lethargy
• Carbon monoxide poisoning
• Cerebellar abscess - lethargy
• Cerebral abscess - lethargy
• Cerebral astrocytoma, adult - lethargy
• Chagas disease - lethargy
• Chemical poisoning - 1,1-Dichloroethene - lethargy
• Chemical poisoning - 1,1-Dimethylhydrazine - lethargy
• Chemical poisoning - 2,4-Dichlorophenol - lethargy
• Chemical poisoning - 2-Methyl-4-Chlorophenoxyacetic Acid - lethargy
• Chemical poisoning - 4-Aminodiphenyl - lethargy
• Chemical poisoning - Acetylene - lethargy
• Chemical poisoning - Acetylene Dichloride - lethargy
• Chemical poisoning - Acetylsalicylic Acid - lethargy
• Chemical poisoning - Benomyl - lethargy
• Chemical poisoning - Benzene - lethargy
• Chemical poisoning - Ethyl Methacrylate - lethargy
• Chemical poisoning - Glaze - lethargy
• Chemical poisoning - Glufosinate - lethargy
• Chemical poisoning - Isopropyl Alcohol - lethargy
• Chemical poisoning - Kratom - lethargy
• Chemical poisoning - Rotenone - lethargy
• Cherry laurel seed poisoning - lethargy
• Cherry seed poisoning - lethargy
• Chokecherry seed poisoning - lethargy
• Choroid Plexus neoplasms - lethargy
• Chronic depression - lethargy
• Chronic fatigue syndrome
• Cirrhosis of liver
• Citrullinemia I, later-onset - lethargy
• Cocaine abuse
• Cocaine addiction - lethargy
• Congenital adrenal hyperplasia - sodium-wasting form - lethargy
• Congenital disorder of glycosylation type 1H - lethargy
• Congenital herpes simplex - lethargy
• Congenital tuberculosis - lethargy
• Constipation - feeling sluggish
• Corticosterone Methyloxidase type I Deficiency - lethargy
• Crack addiction - lethargy
• Cree leukoencephalopathy - lethargy
• Cretinism athyreotic - lethargy
• Defect in synthesis of adenosylcobalamin - lethargy
• Dementia
• Depression - lethargy
• Depressive disorders - sluggishness
• Developmental delay due to 2-methylbutyryl-CoA dehydrogenase deficiency - lethargy
• Diabetes Insipidus, Neurogenic - lethargy
• Diabetes melitis
• Dibasic aminoaciduria 2 - lethargy
• Discitis - lethargy
• Disulfiram toxicity - lethargy
• Double Depression - lethargy
• Down's syndrome
• Dysthymia - sluggishness
• Electrolyte abnormality - lethargy
• Encephalitis
• Encephalomyelitis - lethargy
• Encephalophathy recurrent of childhood - lethargy
• Endogenous depression - lethargy
• English Laurel poisoning - lethargy
• Enterocolitis - sluggishness
• Enterohemorrhagic Escherichia Coli Infection - Lethargy
• Enterovirus antenatal infection - lethargy
• Erythroblastopenia - lethargy
• Esthesioneuroblastoma - lethargy
• Familial Wilms tumor 2 - lethargy
• Fever - Lethargy
• Fire cherry poisoning - lethargy
• Fire-Bellied Toad poisoning - lethargy
• Flax poisoning - lethargy
• Floppy infant syndrome - lethargy
• Follicular dendritic cell tumor - lethargy
• Food Additive Adverse reaction - chocolate - lethargy
• Food Additive Adverse reaction - sulphite - lethargy
• Foxglove poisoning - lethargy
• Functioning pancreatic endocrine tumor - lethargy
• Galactosemia I - lethargy
• Gastritis - lethargy
• Gastrointestinal neoplasm - lethargy
• Glycine synthase deficiency - lethargy
• Glycine synthase deficiency, type 1 - lethargy
• Glycine synthase deficiency, type 2 - lethargy
• Glénard syndrome - lethargy
• Granulomatous hypophysitis - lethargy
• Grass spider poisoning - lethargy
• HADH deficiency - lethargy
• Helicobacter cinaedi infection - lethargy
• Helicobacter fenneliae infection - lethargy
• Hemolytic Uremic Syndrome, Atypical, Susceptibility to, 1 - lethargy
• Hemolytic Uremic Syndrome, Atypical, Susceptibility to, 2 - lethargy
• Hemolytic Uremic Syndrome, Atypical, Susceptibility to, 3 - lethargy
• Hemolytic Uremic Syndrome, Atypical, Susceptibility to, 4 - lethargy
• Hemolytic Uremic Syndrome, Atypical, Susceptibility to, 5 - lethargy
• Hemolytic Uremic Syndrome, Atypical, Susceptibility to, 6 - lethargy
• Hemosiderosis - lethargy
• Hepatic amyloidosis with intrahepatic cholestasis - lethargy
• Hepatic encephalopathy syndrome - lethargy
• Hepatitis - lethargy
• Hepatitis X (non-A,-B,-C,-D,-E) - lethargy
• Hepatorenal tyrosinemia - lethargy
• Herbal Agent adverse reaction - Licorice - lethargy
• Herbal Agent adverse reaction - Margosa oil - lethargy
• Herbal Agent adverse reaction - Passion Flower - lethargy
• Herbal Agent overdose - Melaleuca Oil - lethargy
• Herbal Agent overdose - Peppermint Oil - lethargy
• Herbal Agent overdose - Valerian - lethargy
• Hereditary spherocytic hemolytic anemia - lethargy
• Herpes, Neonatal - lethargy
• HMG-CoA lyase deficiency - lethargy
• Hobo spider poisoning - lethargy
• Holocarboxylase synthetase deficiency - lethargy
• Huntington's disease
• Hyacinth bean poisoning - lethargy
• Hydrocephalus - lethargy
• Hyperglycinemia - lethargy
• Hypernatremia - lethargy
• Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome - lethargy
• Hyperreninemic Hypoaldosteronism, Familial 2 - lethargy
• Hypoaldosteronism, familial - lethargy
• Hypopituitarism - Lethargy
• Hypoplastic Left Heart Syndrome - lethargy
• Hypothyroidism - sluggishness
• Hypothyroidism due to iodide transport defect - lethargy
• Idiopathic alveolar hypoventilation syndrome - lethargy
• Inborn amino acid metabolism disorder - lethargy
• Inborn urea cycle disorder - lethargy
• Insomnia
• Iron poisoning - Lethargy
• Jatropha multifida poisoning - lethargy
• Jaundice - lethargy
• Juvenile idiopathic arthritis - lethargy
• Juvenile myelomonocytic leukemia - lethargy
• King Cobra poisoning - lethargy
• Kwashiorkor - Lethargy
• L-3-alpha-hydroxyacyl-CoA dehydrogenase, short chain, deficiency - lethargy
• Lactic Acidosis - Lethargy
• Lactic acidosis congenital infantile - lethargy
• LADHSC deficiency - lethargy
• Lassa fever - lethargy
• Lemierre's syndrome - lethargy
• Leucinosis - lethargy
• Lipoamide dehydrogenase deficiency - lethargy
• Listeriosis meningoencephalitis - lethargy
• Lithium toxicity - lethargy
• Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency - lethargy
• Loquat poisoning - lethargy
• Lyssavirus - Lethargy
• M/SCHAD deficiency - lethargy
• Malignant germ cell tumor - lethargy
• Maple syrup urine disease - lethargy
• Maple syrup urine disease, type 1A - lethargy
• Maple syrup urine disease, type 1B - lethargy
• Maple syrup urine disease, type II - lethargy
• Maple syrup urine disease, type III - lethargy
• Marasmus - Lethargy
• Marijuana amotivational syndrome - lethargy
• Marine turtle poisoning - lethargy
• Marine turtle poisoning - Green Sea Turtle - lethargy
• Marine turtle poisoning - Hawksbill Turtle - lethargy
• Marine turtle poisoning - Leatherback Turtle - lethargy
• Marine turtle poisoning - Loggerhead Turtle - lethargy
• Marine turtle poisoning - Soft-shelled Turtle - lethargy
• Medium and long chan 3-hydroxyacyl-coenzyme A dehydrogenase deficiency - lethargy
• Medium and short chain 3-hydroxyacyl-CoA dehydrogenase deficiency - lethargy
• Medium-Chain Acyl-CoA Dehydrogenase Deficiency - lethargy
• Medulloblastoma - lethargy
• Melanoma
• Meningitis - lethargy
• Meningococcal disease - lethargy
• Menopause - lethargy
• Metastatic nervous system cancer - Lethargy
• Methylmalonic acidemia - homocystinuria - lethargy
• Methylmalonic acidemia, cobalamin A deficiency - lethargy
• Methylmalonic acidemia, Cobalamin B deficiency - lethargy
• Methylmalonic acidemia, Methylmalonyl CoA mutase deficiency - lethargy
• Methylmalonic acidemia, methylmalonyl CoA racemase deficiency - lethargy
• Methylmalonic acidemia, vitamin B12 responsive - lethargy
• Methylmalonicaciduria, vitamin B12 unresponsive, mut 0 - lethargy
• Mitochondrial trifunctional protein deficiency - lethargy
• Mohave Rattle snake poisoning - lethargy
• Mountain sickness - lethargy
• Mucormycosis - lethargy
• Multiple endocrine neoplasia - Lethargy
• Multiple endocrine neoplasia type 1 - Lethargy
• Multiple endocrine neoplasia type 2 - Lethargy
• Multiple endocrine neoplasia type 3 - Lethargy
• Multiple sclerosis
• Mycobacterial infections - Lethargy
• Myxedema - lethargy
• N-acetyl glutamate synthetase deficiency - lethargy
• Narcotic addiction - lethargy
• Necrotizing enterocolitis - lethargy
• Neonatal bacterial meningitis - lethargy
• Neuroblastoma - lethargy
• Neuroblastoma, Susceptibility to - lethargy
• Neuroblastoma, Susceptibility to, 1 - lethargy
• Neuroblastoma, Susceptibility to, 2 - lethargy
• Neuroblastoma, Susceptibility to, 3 - lethargy
• Neuroblastoma, Susceptibility to, 4 - lethargy
• Neuroblastoma, Susceptibility to, 5 - lethargy
• Neuroblastoma, Susceptibility to, 6 - lethargy
• Neuroectodermal tumor, primitive - lethargy
• Neuroectodermal tumors primitive - lethargy
• Neurosyphilis
• Nocardiosis - lethargy
• Non-diarrheal (D-) HUS syndrome - lethargy
• Obstructive sleep apnea
• Opsoclonus Myoclonus - lethargy
• Organic acidemia - lethargy
• Ornithine transcarbamylase (OTC) Deficiency - lethargy
• Ornithine Transcarbamylase Deficiency - lethargy
• Panic attack
• Papillary renal cell carcinoma - lethargy
• Peach seed poisoning - lethargy
• Perinatal hypophosphatasia - lethargy
• Peripheral neuroectodermal tumor - lethargy
• Phenol sulfotransferase deficiency - lethargy
• Phenothiazine antenatal infection - lethargy
• Phosphoglucomutase deficiency - lethargy
• Pick's disease
• Plant poisoning - Amygdalin - lethargy
• Plant poisoning - Cyanogenic glycoside - lethargy
• Plant poisoning - Lantadene - lethargy
• Plant poisoning - Tetranortriterpene - lethargy
• Plexosarcoma - lethargy
• Post streptococcal glomerulonephritis - lethargy
• Postpartum depression
• Premenstrual syndrome
• Primary amebic meningoencephalitis - lethargy
• Pure red cell aplasia - lethargy
• Rattle snake poisoning - lethargy
• Renal cell carcinoma, papillary, familial - lethargy
• Renal cell carcinoma, papillary, hereditary - lethargy
• Renal cell carcinoma, papillary, sporadic - lethargy
• Renal failure
• Respiratory Syncytial Virus Infections - lethargic
• Reye's Syndrome - lethargy
• Rheumatoid vasculitis - lethargy
• Rhinocerebral mucormycosis - lethargy
• Rhinocerebral zygomycosis - lethargy
• Sarcoidosis - sluggishness
• SBCAD deficiency - lethargy
• SCHAD Deficiency - formerly - lethargy
• Seasonal affective disorder
• Shaken Baby Syndrome - lethargy
• Shock - lethargy
• Short Chain Acyl CoA Dehydrogenase Deficiency (SCAD) - lethargy
• Short-Chain Acyl-CoA Dehydrogenase Deficiency - lethargy
• Sick building syndrome - lethargy
• Sleep apnea
• Spleen conditions - Lethargy
• Streptococcal Group B invasive disease - lethargy
• Stress
• Tapioca poisoning - lethargy
• Temporal lobe abscess
• Thyroid disorders - sluggishness
• Tick paralysis - lethargy
• Toxic epidermal necrolysis - lethargy
• Tricuspid atresia - lethargy
• Tubatoxin poisoning - lethargy
• Tyrosinemia - lethargy
• Ultram withdrawal - lethargy
• Urea Cycle Disorders - Lethargy
• Usher syndrome
• Vanishing white matter leukodystrophy - lethargy
• Venlafaxine toxicity - lethargy
• Very Long Chain Acyl CoA Dehydrogenase Deficiency - Early onset - lethargy
• Very-Long-Chain Acyl-CoA Dehydrogenase Deficiency - lethargy
• Vibrio - Lethargy
• Vibrio vulnificus infection - Lethargy
• Viral digestive infections - Lethargy
• Viral diseases - Lethargy
• Viral meningitis - lethargy
• Visceral steatosis - lethargy
• Volume depletion - Lethargy
• WAGR synsrome
• West nile encephalitis - Lethargy
• West Nile fever - Lethargy
• Western equine encephalitis - Lethargy
• Western/Eastern/California encephalitis - Lethargy
• Wild cherry seed poisoning - lethargy
• Wild Lima bean poisoning - lethargy
• Wilms tumor 2 - lethargy
• Wilms tumor 3 - lethargy
• Wilms tumor 4 - lethargy
• Wilms tumor and radial bilateral aplasia - lethargy
• Wilms' tumor - lethargy
• Winkelman Bethfe Pfeiffer syndrome - Lethargy
• Worm conditions - Lethargy
• Yellow nail syndrome - Lethargy
• Zygomycosis - lethargy

Drug side effect causes of Lethargy

The following drugs, medications, substances or toxins may possibly cause Lethargy as a side effect.

• Digitoxin
• Crystodigin
• Digitaline
• Calcium Gluconate
• Kalcinate

Drug interaction causes of Lethargy:

Drug interactions may be a possible cause of Lethargy.

• Acyclovir and Zovirax interaction
• Trizivir and acyclovir interaction
• Lanoxin (Digoxin) and Cardioquin (Quinidine) interaction
• Lanoxin (Digoxin) and Quinaglute (Quinidine) interaction
• Lanoxin (Digoxin) and Quinidex (Quinidine) interaction

Medical Textbooks about Lethargy

Free online access to excerpts without registration is available to view excerpts from medical textbooks about the causes and diagnosis of Lethargy. Refer to our list of medical textbooks discussions about Lethargy (Free online access to book excerpts, no registration).

 » Next page: Diagnostic Guides Online for Lethargy

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