Priapism is a painful erection of the penis lasting for more than 4h and is independent of sexual stimulation. It represents a urological emergency and necessitates rapid treatment. Etiologically, approximately 20% are caused by drugs, 50% are a combination of hematological diseases (e.g. sickle cell anemia), leukemia, injections in the corpora cavernosa, paraneoplastic processes and neurological or infectious causes. Ultimately, 30% have an idiopathic origin. Priapism as a result of traumatic intracerebral hemorrhage has so far rarely been described. This article presents the case of a 48-year-old male patient who presented to the emergency department with a traumatic subarachnoid hemorrhage. During the hospital stay the patient suffered from low-flow priapism, which was initially punctured and ultimately operatively treated.