Electromyography in primary fibromyalgia syndrome

Fibromyalgia syndrome (FS) is a painful soft-tissue disorder that has not been adequately characterized by electrodiagnosis. An electrodiagnostic examination was performed on 55 patients who fulfilled specific criteria for primary and secondary FS. Of the 41 patients with primary FS, no electrodiagnostic abnormalities involving the peripheral nervous system or musculature were detected.