Diseases and Conditions
Priapism
Nonischemic priapism
When to see a doctor
Ischemic priapism
Overview
Symptoms
Causes
Complications
Prevention
Diagnosis
Treatment
Preparing for an appointment
Complications
Ischemic priapism can cause serious complications. The blood trapped in the penis is deprived of oxygen. When an erection lasts for too long — usually more than four hours — this lack of oxygen can begin to damage or destroy tissues in the penis. Untreated priapism can cause erectile dysfunction.