Myalgic Encephalomyelitis / Chronic Fatigue Syndrome
Myalgic Encephalomyelitis / Chronic Fatigue Syndrome is indexed under Infectious-Origin Chronic, Post-Infectious / Neuroimmune. Also known as ME/CFS, CFS, myalgic encephalomyelitis.
- US prevalence
- ~836,000-2.5 million; many undiagnosed Source: CDC; IOM/NAM 2015 report. Cites federal and non-federal sources, and the record does not say which one gave this figure. Label: REPORTED.
- ICD-10-CM codes
- G93.32
- Typical onset
- Peak onset 20-50; can occur at any age
- Course
- lifelong
- Body systems
- neurological, immunologic
- Sex differences
- F:M ~3-4:1
- Racial and ethnic differences
- May be underdiagnosed 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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