| Disease | Prevalence Estimate | US people estimate | Statistic Used for Calculation |
| concussion |
N/A |
N/A |
No information
|
| Acute Disseminated Encephalomyelitis |
N/A |
N/A |
No information
|
| Adrenoleukodystrophy |
approx 1 in 20,000 or 0.00% or 13,600 people in USA |
13,599 |
1 per 20,000 people suffer from X-linked adrenoleukodystrophy, Genetics Home reference website
|
| Adult-onset ALD |
N/A |
N/A |
No information
|
| Agenesis of the corpus callosum |
N/A |
N/A |
rare
|
| Agnosia |
N/A |
N/A |
rare
|
| Aicardi syndrome |
N/A |
N/A |
rare
|
| Alexander Syndrome |
N/A |
N/A |
rare
|
| Alpers Syndrome |
N/A |
N/A |
rare
|
| Alternating Hemiplegia |
N/A |
N/A |
rare
|
| Alveolar Hydatid Disease |
N/A |
N/A |
No information
|
| Alzheimer's Disease |
approx 1 in 68 or 1.47% or 4 million people in USA |
3,999,999 |
more than 4 million Americans (CDC); estimated 4 million people in the U.S (NHWIC)
|
| Amnesia |
N/A |
N/A |
No information
|
| Amnesic shellfish poisoning |
N/A |
N/A |
No information
|
| Amnestic disorder |
N/A |
N/A |
No information
|
| Anencephaly |
N/A |
N/A |
No information
|
| Angelman syndrome |
approx 1 in 12,000 or 0.01% or 22,666 people in USA |
22,666 |
1 per 12,000 - 20,000 people are affected by Angelman syndrome, Genetics Home Reference website
|
| Anoxia |
N/A |
N/A |
No information
|
| Aphasia |
approx 1 in 272 or 0.37% or 1 million people in USA |
999,999 |
1 million Americans (NINDS)
|
| Apraxia |
N/A |
N/A |
No information
|
| Arachnoid Cysts |
N/A |
N/A |
No information
|
| Arachnoiditis |
N/A |
N/A |
No information
|
| Arteriovenous Malformation |
N/A |
N/A |
No information
|
| Asperger syndrome |
N/A |
N/A |
No information
|
| Ataxia Telangiectasia |
approx 1 in 40,000 or 0.00% or 6,800 people in USA |
6,799 |
1 per 40,000 - 100,000 people worldwide suffer from ataxia-telangiectasia, Genetics Home Reference website
|
| Attention Deficit Hyperactivity Disorder |
approx 1 in 82 or 1.21% or 3.3 million people in USA |
3,299,999 |
3.3 million children have ADD in USA (NHIS-97); estimated 2 million American children; 3 to 5 percent of all children (NIMH).
|
| Auditory Processing Disorder |
N/A |
N/A |
No information
|
| Autism |
approx 1 in 500 or 0.20% or 544,000 people in USA |
544,000 |
1 in 500 to 1 in 2,500 (NIMH); 1-in-1000 to 2-in-1000, depending on diagnostic criteria
|
| Bacterial meningitis |
N/A |
N/A |
No information
|
| Balance disorders |
N/A |
N/A |
No information
|
| Binswanger's Disease |
N/A |
N/A |
rare
|
| Bipolar disorder |
approx 1 in 83 or 1.20% or 3.3 million people in USA |
3,264,000 |
1.2 percent of the population; 2.3 million adult Americans (NIMH)
|
| Bovine spongiform encephalopathy |
N/A |
N/A |
No information
|
| Brain abscess |
N/A |
N/A |
No information
|
| Brain cancer |
N/A |
N/A |
No information
|
| Brain compression |
N/A |
N/A |
No information
|
| Brain damage |
N/A |
N/A |
No information
|
| Canavan disease |
approx 1 in 6,400 or 0.02% or 42,500 people in USA |
42,500 |
1 per 6,400 - 13,500 people of Ashkenazi Jewish heritage suffer from Canavan disease, Genetics Home Reference website
|
| Central Pain Syndrome |
N/A |
N/A |
No information
|
| Cephalic disorders |
N/A |
N/A |
No information
|
| Cephalic tetanus |
N/A |
N/A |
No information
|
| Cerebral Aneurysm |
N/A |
N/A |
No information
|
| Cerebral Arteriosclerosis |
N/A |
N/A |
No information
|
| Cerebral Atrophy |
N/A |
N/A |
No information
|
| Cerebral hemorrhage |
N/A |
N/A |
No information
|
| Cerebral Palsy |
N/A |
N/A |
No information
|
| Cerebrovascular Conditions |
approx 1 in 33 or 3.00% or 8.2 million people in USA |
8,160,000 |
30 per 1000 - NHIS95
|
| Chiari Malformation |
N/A |
N/A |
No information
|
| Chorea |
N/A |
N/A |
No information
|
| Chronic wasting disease (CWD) of mule deer and elk |
N/A |
N/A |
No information
|
| Classic childhood ALD |
N/A |
N/A |
No information
|
| Coma |
N/A |
N/A |
No information
|
| Convulsions |
N/A |
N/A |
No information
|
| Corticobasal Degeneration |
N/A |
N/A |
No information
|
| Craniosynostosis |
N/A |
N/A |
No information
|
| Creutzfeldt-Jakob Disease |
N/A |
N/A |
No information
|
| Cryptococcal Meningitis |
N/A |
N/A |
No information
|
| Dandy-Walker Syndrome |
N/A |
N/A |
No information
|
| Delirium |
N/A |
N/A |
No information
|
| Dementia |
N/A |
N/A |
No information
|
| Dementia With Lewy Bodies |
N/A |
N/A |
No information
|
| Dysgraphia |
N/A |
N/A |
No information
|
| Dyslexia |
N/A |
N/A |
No information
|
| Dystonias |
N/A |
N/A |
No information
|
| Eastern equine encephalitis |
N/A |
N/A |
No information
|
| Empty Sella Syndrome |
N/A |
N/A |
rare
|
| Encephalitis |
N/A |
N/A |
No information
|
| Encephalitis, California serogroup viral |
N/A |
N/A |
No information
|
| Encephaloceles |
N/A |
N/A |
rare
|
| Epilepsy |
approx 1 in 118 or 0.85% or 2.3 million people in USA |
2,299,999 |
2.3 million Americans (CDC)
|
| Fahr's Syndrome |
N/A |
N/A |
rare
|
| Fatal familial insomnia |
N/A |
N/A |
No information
|
| Febrile Seizures |
N/A |
N/A |
No information
|
| Feline spongiform encephalopathy |
N/A |
N/A |
No information
|
| Female carrier ALD |
N/A |
N/A |
No information
|
| Fetal alcohol syndrome |
N/A |
N/A |
No information
|
| Friedreich's ataxia |
N/A |
N/A |
No information
|
| Gaucher Disease |
approx 1 in 50,000 or 0.00% or 5,440 people in USA |
5,440 |
1 per 50,000 - 100,000 people are affected by Gaucher disease, Genetics Home Reference website
|
| Gerstmann's Syndrome |
N/A |
N/A |
No information
|
| GSS (Gerstmann Sträussler Syndrome) |
N/A |
N/A |
No information
|
| Head injury |
N/A |
N/A |
No information
|
| Hemangioblastoma |
N/A |
N/A |
No information
|
| High altitude cerebral edema |
N/A |
N/A |
No information
|
| Holoprosencephaly |
N/A |
N/A |
No information
|
| Huntington's Disease |
approx 1 in 33,333 or 0.00% or 8,160 people in USA |
8,160 |
estimated 3-7 per 100,000 people of European ancestry suffer from Huntington disease, Genetics Home Reference website
|
| Hydranencephaly |
N/A |
N/A |
rare
|
| Hydrocephalus |
N/A |
N/A |
No information
|
| Infantile Refsum Disease |
N/A |
N/A |
No information
|
| Joubert Syndrome |
N/A |
N/A |
rare
|
| Korsakoff's psychosis |
N/A |
N/A |
No information
|
| Krabbé Disease |
N/A |
N/A |
rare
|
| Kuru |
N/A |
N/A |
No information
|
| Landau-Kleffner Syndrome |
N/A |
N/A |
rare
|
| Leukodystrophy |
N/A |
N/A |
No information
|
| Megalencephaly |
N/A |
N/A |
No information
|
| MELAS |
N/A |
N/A |
No information
|
| Melkersson-Rosenthal Syndrome |
N/A |
N/A |
No information
|
| Meningioma |
N/A |
N/A |
No information
|
| Meningitis |
N/A |
N/A |
No information
|
| Meningococcal disease |
N/A |
N/A |
No information
|
| Mental illness |
N/A |
N/A |
No information
|
| Metachromatic Leukodystrophy |
N/A |
N/A |
No information
|
| Microcephaly |
N/A |
N/A |
rare
|
| Moyamoya Disease |
N/A |
N/A |
rare
|
| Multi-Infarct Dementia |
N/A |
N/A |
No information
|
| Multiple Sclerosis |
approx 1 in 700 or 0.14% or 388,571 people in USA |
388,571 |
1-in-700 (NIAID)
|
| Murray Valley encephalitis |
N/A |
N/A |
No information
|
| Myoclonus |
N/A |
N/A |
No information
|
| Narcolepsy |
approx 1 in 1,359 or 0.07% or 200,000 people in USA |
200,000 |
200,000 Americans (NHLBI estimate); 50,000 diagnosed.
|
| Neural tube defect |
N/A |
N/A |
No information
|
| Neuroblastoma |
N/A |
N/A |
No information
|
| Neurocysticercosis |
N/A |
N/A |
No information
|
| Neuroleptic Malignant Syndrome |
N/A |
N/A |
No information
|
| Neuronal Migration Disorders |
N/A |
N/A |
No information
|
| Ohtahara Syndrome |
N/A |
N/A |
No information
|
| Olivopontocerebellar Atrophy |
N/A |
N/A |
No information
|
| Opsoclonus Myoclonus |
N/A |
N/A |
No information
|
| Parkinson's Disease |
approx 1 in 272 or 0.37% or 1 million people in USA |
999,999 |
1 million people (unreliable estimate)
|
| Pelizaeus-Merzbacher Disease |
N/A |
N/A |
rare
|
| Persistent Vegetative State |
N/A |
N/A |
No information
|
| Pick's Disease |
N/A |
N/A |
No information
|
| Porencephaly |
N/A |
N/A |
extremely rare
|
| Progressive Multifocal Leukoencephalopathy |
N/A |
N/A |
No information
|
| Progressive Supranuclear Palsy |
N/A |
N/A |
rare
|
| Pseudotumor Cerebri |
approx 1 in 272,000,000 or 0.00% or 1 people in USA |
1 |
about 1-2 people per 100,000 population have benign intracranial hypertension in the US (Association for Spina Bifida and Hydrocephalus)
|
| Rabies |
N/A |
N/A |
No information
|
| Rasmussen's Encephalitis |
N/A |
N/A |
rare
|
| Refsum Disease |
N/A |
N/A |
No information
|
| Rett's syndrome |
approx 1 in 10,000 or 0.01% or 27,200 people in USA |
27,199 |
estimated 1 per 10,000 - 22,000 females suffer from Rett syndrome, Genetics Home Reference website
|
| Schizencephaly |
N/A |
N/A |
extremely rare
|
| Schizophrenia |
approx 1 in 123 or 0.81% or 2.2 million people in USA |
2,199,999 |
Approximately 2.2 million American adults (NIMH); estimated 1.3% adults (USSG); more than 2 million Americans
|
| Septo-Optic Dysplasia |
N/A |
N/A |
rare
|
| Shaken Baby Syndrome |
N/A |
N/A |
No information
|
| Soto's Syndrome |
N/A |
N/A |
rare
|
| Spastic disorders |
N/A |
N/A |
No information
|
| St. Louis encephalitis |
N/A |
N/A |
No information
|
| Stroke |
approx 1 in 59 or 1.69% or 4.6 million people in USA |
4,599,999 |
estimated 4.6 million (NHLBI)
|
| Subacute Sclerosing Panencephalitis |
N/A |
N/A |
rare - because of the rarity of measles due to vaccination programs.
|
| Subarachnoid hemorrhage |
N/A |
N/A |
No information
|
| Subdural hematoma |
N/A |
N/A |
No information
|
| Sydenham chorea |
N/A |
N/A |
No information
|
| Tapeworms |
N/A |
N/A |
No information
|
| Tardive Dyskinesia |
N/A |
N/A |
No information
|
| Tay Sachs |
N/A |
N/A |
No information
|
| Todd's Paralysis |
N/A |
N/A |
No information
|
| Tourette Syndrome |
approx 1 in 1,000 or 0.10% or 272,000 people in USA |
272,000 |
estimated 1-10 per 1,000 children have Tourette syndrome, Genetics Home Reference website
|
| Transient Ischemic Attack |
N/A |
N/A |
No information
|
| Transmissible mink encephalopathy (TME) |
N/A |
N/A |
No information
|
| Traumatic Brain Injury |
approx 1 in 500 or 0.20% or 544,000 people in USA |
544,000 |
0.2% of population has an acquired brain injury in Australia 1998 (Australia’s Health 2004, AIHW)
|
| Tremor |
N/A |
N/A |
No information
|
| Tuberous sclerosis |
approx 1 in 10,000 or 0.01% or 27,200 people in USA |
27,199 |
less than 1 in 10,000
|
| Variant CJD |
N/A |
N/A |
No information
|
| Viral meningitis |
N/A |
N/A |
No information
|
| Wallenberg's Syndrome |
N/A |
N/A |
No information
|
| Wernicke's encephalopathy |
N/A |
N/A |
No information
|
| Wernicke-Korsakoff syndrome |
N/A |
N/A |
No information
|
| Western equine encephalitis |
N/A |
N/A |
No information
|
| Williams Syndrome |
approx 1 in 7,500 or 0.01% or 36,266 people in USA |
36,266 |
estimated 1 per 7,500 - 20,000 people suffer from Williams syndrome, Genetics Home Reference website
|
| Wilson's Disease |
approx 1 in 30,000 or 0.00% or 9,066 people in USA |
9,066 |
approximately 1 per 30,000 people suffer from Wilson disease, Genetics Home Reference website
|
| Zellweger Syndrome |
N/A |
N/A |
rare
|
| Japanese encephalitis |
N/A |
N/A |
No information
|
| Pneumococcal meningitis |
N/A |
N/A |
No information
|
| Vertigo |
N/A |
N/A |
No information
|
The medical term 'prevalence' of Brain conditions usually refers to the estimated population
of people who are managing Brain conditions at any given time,
whereas the annual diagnosis rate of new cases of Brain conditions is called the 'incidence'.
For more information on prevalence and incidence statistics, see about prevalence and incidence statistics.
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