Key Takeaways
- Fibromyalgia affects approximately 4 million adults in the United States, representing about 2% of the adult population.
- Globally, fibromyalgia prevalence is estimated at 2-8% in the general population, with variations by region and diagnostic criteria used.
- Women are diagnosed with fibromyalgia 7-9 times more frequently than men, comprising 80-90% of cases in clinical settings.
- Fibromyalgia symptoms include widespread pain lasting at least 3 months affecting both sides of the body above and below the waist.
- Fatigue is reported by 90% of fibromyalgia patients, often described as non-restorative sleep-related exhaustion.
- Cognitive dysfunction, or "fibro fog," affects 50-80% of patients, impairing memory, concentration, and processing speed.
- The 2010 ACR preliminary diagnostic criteria require a Widespread Pain Index (WPI) of ≥7 and Symptom Severity (SS) scale ≥5, or WPI 3-6 and SS ≥9.
- Tender point count of ≥11 out of 18 sites with 4 kg/cm pressure was the 1990 ACR criterion, still used in some settings.
- FM/a blood test detects elevated cytokines for fibromyalgia diagnosis with 93% accuracy in preliminary studies.
- Duloxetine, an SNRI, reduces pain by ≥30% in 50-60% of patients at 60mg/day in RCTs.
- Pregabalin at 300-450mg/day achieves meaningful pain relief in 35-45% of fibromyalgia patients per trials.
- Cognitive behavioral therapy (CBT) improves symptoms in 60-70% of patients over 6 months.
- Fibromyalgia patients have 2-3 times higher healthcare utilization costs, averaging $2,600 more annually.
- Unemployment rates among fibromyalgia patients reach 25-50% due to symptom severity.
- Quality of life scores (SF-36) in fibromyalgia are comparable to those in rheumatoid arthritis or SLE.
Fibromyalgia brings chronic widespread pain, fatigue, and other symptoms to mostly women.
Diagnosis
Diagnosis Interpretation
Epidemiology
Epidemiology Interpretation
Outcomes
Outcomes Interpretation
Symptoms
Symptoms Interpretation
Treatment
Treatment Interpretation
Sources & References
- Reference 1CDCcdc.govVisit source
- Reference 2NCBIncbi.nlm.nih.govVisit source
- Reference 3ARTHRITISarthritis.orgVisit source
- Reference 4MAYOCLINICmayoclinic.orgVisit source
- Reference 5PUBMEDpubmed.ncbi.nlm.nih.govVisit source
- Reference 6RHEUMATOLOGYrheumatology.orgVisit source
- Reference 7NIAMSniams.nih.govVisit source
- Reference 8NEJMnejm.orgVisit source
- Reference 9COCHRANELIBRARYcochranelibrary.comVisit source
- Reference 10SSAssa.govVisit source






