[Psychiatric symptoms following accidental exposure to sarin--a case report].

A middle aged man who inhaled sarin in a train in a subway station in Tokyo in 1995 and showed a variety of symptoms including psychiatric symptoms was reported. He experienced muscle weakness, dyspnea and unconsciousness of sudden onset immediately after exposure to sarin. Marked miosis was observed on admission. Plasma cholinesterase activity was remarkably decreased at that time. He also experienced delirium consisting of visual hallucination, insomnia and irritability at mid-night for more than seven days. These psychiatric symptoms gradually improved without any medication. To date there is no detailed description of such psychiatric symptoms in sarin poisoning.