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[Rhythm of paradoxical sleep in an adult].

Adults rarely present with rhythmic movement disorders in the Sleep Laboratory. We report the case of a 34 year-old woman, in good health, with a complaint of chronic body rolling during sleep and fatigue. Polysomnographic and video recordings showed head and body rhythmic movements, mainly during REM sleep. The contribution of severe psychopathology or neurological disorder was ruled out with personality testing, structured psychiatric interview and neurological examination with EEG, cerebral CT, MRI, and PET scans.