Obsessive-Compulsive Disorder

Obsessive-Compulsive Disorder is indexed under Mental Health & Behavioral, Obsessive-Compulsive & Related. Also known as OCD.

US prevalence

1.2% past-year prevalence among U.S. adults age 18+ in NCS-R (2001-2003); 2.3% lifetime prevalence Source: NIMH — Obsessive-Compulsive Disorder statistics (NCS-R). Federal source. Label: VERIFIED.

ICD-10-CM codes

F42

Typical onset

Bimodal: 8-12 years and late teens/early 20s

Course

managed

Body systems

psychiatric

Sex differences

Equal in adults; boys more commonly affected in childhood

Racial and ethnic differences

Similar prevalence; disparities in access to ERP therapy

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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