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We have had experience in treating tardive Tourette-like syndrome on a chronic schizophrenic patient. The patient was a 38-year-old woman. A diagnosis of schizophrenia was made in 1971 and she received repeated medications for 17 years. In 1989, she began to show vocal tic with coprolalia and motor tic. The medications were haloperidol 18 mg, zotepine 200 mg, levomepromazine 100 mg, biperiden 3 mg and nitrazepam 10 mg at the beginning of Tourette-like syndrome. We have tried to change the medications but this tardive Tourette-like syndrome continued to hang on. However, the symptoms gradually improved after a change in drugs; cessation of biperiden 3 mg and the administration of clonazepam 3 mg. The present case suggested that tardive Tourette-like syndrome might be a subtype of neuroleptic-associated tardive syndromes which might be treated with clonazepam.
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