[Case of obsessive-compulsive disorder associated with neuroleptics-induced deficit syndrome (NIDS): successfully treated by discontinuation of neuroleptics followed by SSRI].

A 59-year-old man, who was being trieated for schizophrenia, exhibited a concurrence of obsessive compulsive (OC) symptoms and neuroleptics-induced deficit syndrome (NIDS). His symptoms were remarkably improved by the discontinuation of neuroleptics followed by the introduction of fluvoxamine. He was originally a prudent, suspicious and unsociable person, the character of which corresponds to a schizotypal personality disorder. From his early twenties OC-symptoms appeared along the theme of cleanliness, health, and ethics. After the first half of his forties OC-symptoms worsened with the emergence of a depressive state. He consulted a psychiatric unit at the age of 49 for the first time and was diagnosed as having schizophrenia of a negative symptoms-dominant type associated with obsessive-compulsive disorder. He was started on haloperidol but the condition did not improved at all so that the dose was gradually increased. When he finally moved to our hospital at the age of 57, serious NIDS such as slow thinking, difficulty in concentration, decrease in emotional reaction, and dysphoria was recognized, in addition to parkinsonism. In order to improve the NIDS, we gradually decreased the dose and reduced the variety of neuroleptics and substituted them for risperidone alone. During these periods, no emergence of psychotic symptoms or worsening of OC-symptoms was realized. Accordingly he was admitted to our hospital and started on fluvoxamine, and the NIDS and OC-symptoms were markedly improved. In conclusion the use of neuroleptics specifically for OC-symptoms should be done very carefully in consideration of the possibility of provoking NIDS.