The term priapism describes erections of >4 hours that arise in the absence of or last well beyond sexual stimulation. Ischaemic priapism is the most common form and treatment success is strongly dependent on the duration of priapism. The aetiology is widely variable as a result of which several specialisms can be confronted with this condition. Over the past few years, urologists increasingly have to deal with patients who do not suffer from erectile dysfunction, but nevertheless use intracavernous injections with priapism as a result. These men are often reluctant to see a doctor due to shame and ignorance, which often leads to delayed treatment. According to current guidelines, early prosthesis implantation is recommended if the priapism lasted >36 hours. Treatment of stuttering priapism should be focused on prevention of subsequent episodes. Non-ischaemic priapism generally follows a mild course and can initially be approached conservatively.