Risperidone-induced Priapism: A Rare Case Report

REPORTwithout any stimulation and again landed up into psychiatry OPD in AGMC and GBP Hospital.Diagnosis was made as drug (risperidone)-induced priapism.Subsequently, the patient was referred to the urology OPD for confirmation and to rule out other possible causes.After being referred to the urologist, 10 mg of etilefrine was injected intracavernously.However, it was not successful.Next, the patient was taken to the operating room and a cavernous puncture was carried out.There was spontaneous resolution of the priapism.He had abnormal findings neither on hematology tests nor biochemistry tests.A magnetic resolution imaging (MRI) was performed 7 days after the priapism episode to evaluate the possible sequelae and no significant abnormality was detected.Antipsychotic medication was stopped.Benzodiazepines only were prescribed for 10 days.Considering aggressive behaviors of the patient due to delusions and bizarre behavior which was difficult to manage at home, antipsychotic medication was again started.Considering the fact of least likely to cause priapism, olanzapine was chosen. 3,5Starting at 2.5 mg per day and gradually increasing by 2.5 mg every 4th day, 15 mg per day was reached along with trihexyphenidyl 2 mg once daily.On an as needed basis, diazepam was used.This treatment regimen was well tolerated by the patient.He responded to the medication.The patient was maintained well with this regimen without any sign of priapism.