Priapism is a prolonged erection of the penis. The persistent erection continues hours beyond or isn't caused by sexual stimulation. Priapism is usually painful.
Although priapism is an uncommon condition overall, it occurs commonly in certain groups, such as people who have sickle cell anemia. Prompt treatment for priapism is usually needed to prevent tissue damage that could result in the inability to get or maintain an erection (erectile dysfunction).
Priapism is most common in men in their 30s.
Source: http://www.mayoclinic.com
Priapism symptoms vary depending on the type of priapism. The two main types of priapism are ischemic and nonischemic priapism.
Ischemic priapism, also called low-flow priapism, is the result of blood not being able to leave the penis. It's the more common type of priapism. Signs and symptoms include:
Recurrent or stuttering priapism, a form of ischemic priapism, is an uncommon condition. It's more common in males who have an inherited disorder characterized by abnormally shaped red blood cells (sickle cell anemia). Sickle cells can block the blood vessels in the penis. Recurrent priapism describes repetitive episodes of prolonged erections and often includes episodes of ischemic priapism. In some cases, the condition starts off with unwanted and painful erections of short duration and might progress over time to more frequent and more prolonged erections.
Nonischemic priapism, also known as high-flow priapism, occurs when penile blood flow isn't regulated appropriately. Nonischemic priapism is usually painless. Signs and symptoms include:
If you have an erection lasting more than four hours, you need emergency care. The emergency room doctor will determine whether you have ischemic priapism or nonischemic priapism. This is necessary because the treatment for each is different, and treatment for ischemic priapism needs to be done as soon as possible.
If you experience recurrent, persistent, painful erections that resolve on their own, see your doctor. You might need treatment to prevent further episodes.
Source: http://www.mayoclinic.com
An erection normally occurs in response to physical or psychological stimulation. This stimulation causes certain blood vessels and smooth muscles to relax and/or expand, increasing blood flow to spongy tissues in the penis. Consequently, the blood-filled penis becomes erect. After stimulation ends, the blood flows out and the penis returns to its nonrigid (flaccid) state.
Priapism occurs when some part of this system â the blood, blood vessels, smooth muscles or nerves â changes normal blood flow. Subsequently, the erection persists. While the underlying cause of priapism often can't be determined, several conditions are believed to play a role.
Blood-related diseases might contribute to priapism â usually ischemic priapism, when blood isn't able to flow out of the penis. These disorders include:
The most common associated diagnosis in children is sickle cell anemia.
Priapism, usually ischemic priapism, is a possible side effect of a number of drugs, including:
Alcohol, marijuana, cocaine and other illicit drug abuse can cause priapism, particularly ischemic priapism.
A common cause of nonischemic priapism â a persistent erection caused by excessive blood flow into the penis â is trauma or injury to your penis, pelvis or perineum, the region between the base of the penis and the anus.
Other causes of priapism include:
Source: http://www.mayoclinic.com
If you have an erection lasting more than four hours, you need emergency care. The emergency room doctor will determine whether you have ischemic priapism or nonischemic priapism. This is necessary because the treatment for each is different, and treatment for ischemic priapism needs to be done as soon as possible.
To determine what type of priapism you have, your doctor will ask questions and examine your genitals, abdomen, groin and perineum. He or she might be able to determine what type of priapism you have based on whether you're experiencing pain and the rigidity of the penis. This exam might also reveal the presence of a tumor or signs of trauma.
Diagnostic tests might be needed to determine what type of priapism you have. Additional tests might identify the cause of priapism. In an emergency room setting, your treatment will likely begin before all test results are received. Diagnostic tests can include:
Source: http://www.mayoclinic.com
Ischemic priapism can cause serious complications. The blood trapped in the penis is deprived of oxygen. When an erection lasts for too long, this oxygen-poor blood can begin to damage or destroy tissues in the penis. As a result, untreated priapism can cause erectile dysfunction.
Source: http://www.mayoclinic.com
If you have recurrent or stuttering priapism, to prevent future episodes your doctor might recommend:
Source: http://www.mayoclinic.com
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