Priapism is an erection that lasts more than 4 hours without sexual stimulation. It can be very painful. Often the cause of priapism is not known. In adults, some causes include sickle cell disease and side effects from medicine or from drugs. Some prescription medicines and shots (injections) have been linked to priapism. So have alcohol, marijuana, and cocaine.
Children with leukemia can get priapism. This is because blood flow in the penis gets blocked by the large number of white blood cells in the blood.
Priapism is very serious. When erections last over 4 hours, there is less blood flow to the penis. This can cause cell damage from lack of oxygen. The longer you have the erection before treatment, the worse the outcome. Those treated within 4 to 6 hours do best. But up to 50% of all men who get priapism will have some degree of erection problems in the future.
Home care
- Rest and don't have any sexual stimulation as advised by your doctor.
- Stay away from things that may trigger priapism. These may include certain medicines, marijuana, and alcohol.
- Ask your urologist about medicines that can be used at home at the earliest sign of it happening again.
- The medicine hydroxyurea may help prevent priapism in people with sickle cell disease.
Follow-up care
Follow up with your urologist as advised.
Call 911
Call
- Shortness of breath.
- Chest pain.
When to get medical advice
Contact your doctor right away if you have:
- Another prolonged erection that does not go away soon after sexual stimulation stops.
- Bleeding from puncture sites in the penis where blood was drained.
- More pain, redness, or swelling.
- An area of skin that is turning black.
- Trouble passing urine.

