Priapism after Long-acting Risperidone Injection (original) (raw)

2006

Abstract

Objective: Priapism is a persistent, painful erection that occurs without sexual stimulation. It has been associated with the use of many antipsychotic agents, including clozapine, olanzapine and risperidone but has not been reported as a side effect of long-acting risperidone injection. Here we report a case of this adverse event in a patient treated with long-acting risperidone. Case report: A 27-yearold man with a 10-year history of paranoid-type schizophrenia developed priapism two weeks after a long-acting risperidone injection. After treatment, he denied any erectile abnormalities and had had no subsequent episodes of priapism during 6 months of follow up. Conclusion: Priapism rarely results from treatment with antipsychotic agents. Clinicians, however, must be aware of the possibility of this complication when prescribing these drugs.

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