Parkinson Disease

Parkinson Disease is indexed under Neurological & Neurodegenerative, Movement Disorders. Also known as PD, Parkinson's, paralysis agitans.

US prevalence

~1 million (~930,000 in 2020; projected 1.2 million by 2030) Source: Parkinson's Foundation; GBD 2021. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.

ICD-10-CM codes

G20

Typical onset

Mean onset ~60 years; 5-10% early-onset (<50)

Course

progressive

Body systems

neurological

Sex differences

M:F ~1.5:1

Racial and ethnic differences

Historically reported higher in white populations; emerging data suggest underdiagnosis in Black and Hispanic populations

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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