Table 2: Prevalence of fibromyalgia syndrome (FMS) in chronic painful diseases with structural (organic) pathology (DWSP).

Chronic DWSP% prevalence of FMS (mean)% prevalence of FMS (range)Reference no.

Rheumatoid arthritis15.412.2–19.8[10, 3841]
SLE16.25.0–25.3[4248, 58]
Ankylosing spondylitis*30.410.8–50.0[49, 50]
Osteoarthritis11.0[51]
Diabetes mellitus*17.517.0–18.0[52, 53]
Endometriosis5.9[54]
Hypothyroidism34.0[55]
Crohn’s disease26.03.0–49.0[56, 57]
Ulcerative colitis11.43.7–49.0[56, 57]

SLE: systemic lupus erythematosus.
*Female patients only.