Risperidone-Induced Priapism: A Case Report

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To the Editor: Priapism is a prolonged, painful, and persistentpenile erection usually not associated with sexual stimulation.Priapism results from an obstruction in the venousdrainage of the corpora cavernosa of the penis sparing the glanspenis and corpora spongiosa; thus, only the corpora cavernosaare turgid without affecting the other 2 components. It isthis finding that distinguishes priapism from a normal penileerection.¹