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Fibromyalgia in familial Mediterranean fever
P Langevitz1, D Buskila, R Finkelstein
1Heller Institute of Medical Research, Chaim Sheba Medical Center, Tel Hashomer, Israel.
Objective:
To determine whether chronic lower body pain in a subpopulation of patients with familial Mediterranean fever (FMF) is due directly to the musculoskeletal manifestations of FMF or whether they are connected to mechanical problems in the low back and leg/foot or to other factors operative in fibromyalgia (FM).
Methods:
In 93 consecutive patients with FMF a point count of 14 tender points (TP) was conducted by thumb palpation. Tenderness thresholds were assessed in some of the TP and of control point sites by Chatillon dolorimeter.
Results:
In female patients with FMF dolorimeter thresholds of fibrositic and control point sites were significantly lower than in male patients with FMF (p < 0.004). Also patients with FMF with back pain and foot/leg pain are more tender than patients with FMF without this characteristic (p < 0.001).
Conclusion:
The detection of FM and definition of tenderness thresholds is relevant to this disease, since musculoskeletal complaints are common in this group of patients but not always explained by objective findings.