High flow priapism is a persistent erection caused by an excessive arterial flow between a branch of the internal pudendal artery and the lacunary spaces of the cavernous bodies. It is rare, not painful and usually due to perineal trauma. Management is usually conservative; however, when it persists it can be managed with supraselective embolization of the fistula. The aim of this paper is to present a case of this infrequent pathology and a review of the state of the art of supraselective embolization of the fistula.