Segment 1. Phenomenology of the Patient. Immediately after awakening with preserved consciousness, the patient developed intermittent abnormal movements consisting of oculogyric crisis; tongue protrusion; blepharospasm; and oro-mandibular dystonia including risus sardonicus, jaw opening, and right torticollis. All abnormal movements occurred spontaneously and involuntarily. Segment 2: Outcome After Treatment. The symptoms were successfully treated with a single 10-mg dose of intravenous diazepam.