Electroconvulsive Therapy for Long-term Mutism in a Case of Noncatatonic Paranoid Schizophrenia.

We report a rare case of paranoid schizophrenia presenting with continuous mutism for about three years. This 26-year-old woman with multiple Schneiderian first-rank symptoms ['Schneiderian' refers to those symptoms established by the German psychiatrist Kurt Schneider for the diagnosis of schizophrenia] did not have any catatonic features, and she would fluently communicate by gesturing or writing. Since there was serious impairment in biological functions not readily correctable by antipsychotics, she was started on electroconvulsive therapy. She responded well to 14 sessions of electroconvulsive therapy along with oral haloperidol. We also discuss the cultural implications of prolonged mutism. To the best of our knowledge, this is the first case of mutism in noncatatonic paranoid schizophrenia that responded well to electroconvulsive therapy described in the literature.