Normal Pressure Hydrocephalus
Normal Pressure Hydrocephalus is indexed under Neurological & Neurodegenerative, Other Neurological. Also known as NPH, idiopathic normal pressure hydrocephalus.
- US prevalence
- ~700,000 (often misdiagnosed as Alzheimer's or Parkinson's) Source: Hydrocephalus Association. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.
- ICD-10-CM codes
- G91.2
- Typical onset
- Primarily >60 years
- Course
- progressive
- Body systems
- neurological
- Sex differences
- Slightly more common in men
- Racial and ethnic differences
- Limited data
What this page does not establish
These figures describe populations, not individuals, and none of them is a diagnosis or a treatment recommendation. Prevalence estimates are approximate and reflect published ranges. Disparity figures are reported patterns, not causes.
Taxonomy last reviewed 2026-05-19. Each figure on the interactive page carries its own source and retrieval date, which can be later than this review.
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