Stiff Person Syndrome

Stiff Person Syndrome is indexed under Autoimmune & Inflammatory, Neuroimmune. Also known as SPS.

US prevalence

~1-2 per million Source: NINDS; NORD. Cites federal and non-federal sources, and the record does not say which one gave this figure. Label: REPORTED.

ICD-10-CM codes

G25.82

Typical onset

30-60 years

Course

progressive

Body systems

neurological, musculoskeletal

Sex differences

F:M ~2:1

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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