Fibromyalgia

Fibromyalgia is indexed under Musculoskeletal & Connective Tissue, Central Sensitization. Also known as FM, fibromyalgia syndrome.

US prevalence

~4 million U.S. adults (~2% of adults) Source: CDC Arthritis — Fibromyalgia (archived CDC page). Federal source. Label: VERIFIED.

ICD-10-CM codes

M79.7

Typical onset

Middle-aged most common; can occur at any age

Course

lifelong

Body systems

musculoskeletal, neurological

Sex differences

F:M ~7:1 (by clinical diagnosis; survey data suggest ~2:1)

Racial and ethnic differences

May be underdiagnosed in non-white 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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