Multiple Sclerosis

Multiple Sclerosis is indexed under Neurological & Neurodegenerative, Demyelinating Diseases. Also known as MS.

US prevalence

~1 million Source: NMSS; Wallin et al. Neurology 2019. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.

ICD-10-CM codes

G35

Typical onset

Typically 20-50 years; peak 20-40

Course

progressive

Body systems

neurological

Sex differences

F:M ~3:1 for relapsing forms

Racial and ethnic differences

Historically considered more common in white populations; Black Americans may have more severe disease course

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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