Sleep and posttraumatic rheumatic pain modulation disorder (fibrositis syndrome).

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Abstract
The clinical features and sleep physiology of 11 female patients with “fibrositis syndrome” or rheumatic pain modulation disorder (RPMD) were compared with 11 female postaccident pain (PAP) patients who complained of widespread musculoskeletal pain, fatigue, and nonrestorative sleep following a nonphysically injurious motor vehicle or work-related accident. Both groups had similar musculoskeletal pain, fatigue, sleepiness and an alpha (7.5–11 Hz) EEG non-rapid eye movement (NREM) sleep anomaly. A psychophysiologic arousal mechanism during NREM sleep induced by the emotional stress of the accident may mediate the subsequent nonrestorative sleep, musculoskeletal pain, and fatigue symptoms in the posttraumatic pain disorder.