It can occur in all age groups, including newborns. However, it usually affects men between the ages of 5 to 10 years and 20 to 50 years.
There are two categories of priapism:
Low flow:
High flow:
What causes priapism?
Sickle cell anemia:
Medications:
Other causes of priapism include:
Trauma to the spinal cord or to the genital area
Black widow spider bites
Carbon monoxide poisoning
Illicit drug use, such as marijuana and cocaine
In rare cases, priapism may be related to cancers that can affect the penis and prevent the outflow of blood.
How is priapism diagnosed?
If you experience priapism, it is important that you seek medical care immediately. Tell your doctor:
The length of time you have had the erection
How long your erection usually lasts
Any medication or drugs, legal or illegal, which you have used. Be honest with your doctor, illegal drug use is particularly relevant since both marijuana and cocaine have been linked to priapism.
Whether or not priapism followed trauma to that area of the body.
Your doctor will review your medical history and perform a thorough physical examination to determine the cause of priapism. This will include checking the rectum and the abdomen for evidence of unusual growths or abnormalities that may indicate the presence of cancer.
After the physical exam is complete, the doctor will take a blood-gas measurement of the blood from the penis. During this test, a small needle is placed in the penis, some of the blood is drawn and then it is sent to a lab for analysis. This provides a clue as to how long the condition has been present and how much damage has occurred.
How is priapism treated?
The goal of all treatment is to make the erection go away and preserve future erectile function. If a person receives treatment within four to six hours, the erection can almost always be reduced with medication.
Ice packs: Ice applied to the penis and perineum may reduce swelling.
Surgical ligation: Used in cases where an artery has been ruptured, the doctor will ligate (tie off) the artery that is causing the priapism in order to restore normal blood flow.
Intracavernous injection: Used for low-flow priapism, during this treatment drugs known as alpha-agonists are injected into the penis that cause the veins to narrow reducing blood flow to the penis causing the swelling to subside.
Surgical shunt: Also used for low-flow priapism, a shunt is a passageway that is surgically inserted into the penis to divert the blood flow and allow circulation to return to normal.
Aspiration: After numbing the penis, doctors will insert a needle and drain blood from the penis to reduce pressure and swelling.