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Case of symptomatic propriospinal myoclonus evolving toward acute “myoclonic status”

Propriospinal myoclonus is a rare motor disorder consisting of involuntary spinal‐generated muscular jerks. Here, we report a severe and uncommon case of propriospinal myoclonus that appeared after a vertebral fracture of T11. In this patient, the polysomnographic investigation showed continuing focal myoclonic activity in axial muscles during stable sleep and an acute progression into a myoclonic “status” associated with respiratory failure and loss of consciousness. It is necessary to consider this severe progression and support it with prompt emergency maneuvers and adequate pharmacotherapy. © 2005 Movement Disorder Society