Priapism

Overview

Priapism is a prolonged erection that lasts longer than expected and is not related to sexual stimulation, or continues after sexual stimulation has ended. It can be painful or painless, depending on the type. Priapism is a urological condition that requires medical attention because some forms can reduce blood flow and oxygen to the penis, which may lead to tissue damage if not treated promptly.

There are different types of priapism. Ischemic priapism, sometimes called low-flow priapism, is the most common and is usually painful. It happens when blood becomes trapped in the penis and cannot drain normally. Non-ischemic priapism, or high-flow priapism, is less common and often less painful. It may occur after an injury that changes blood flow into the penis. Some people experience recurrent or “stuttering” priapism, where episodes come and go over time.

Symptoms

The main symptom of priapism is an erection that lasts for an unusually long time and is not connected to ongoing sexual arousal. Symptoms can vary depending on the type of priapism.

• An erection lasting several hours or more
• Pain or increasing discomfort in the penis, especially with ischemic priapism
• A rigid shaft of the penis, while the tip may feel softer
• An erection that does not improve after ejaculation or rest
• Repeated episodes of prolonged erections that resolve and return later
• A less painful, partially rigid erection after trauma, which may suggest non-ischemic priapism

An erection lasting four hours or longer should be treated as a medical emergency, even if pain is mild. Early assessment helps doctors identify the type and provide appropriate care.

Causes and Risk Factors

Priapism can occur when normal blood flow in the penis is disrupted. In ischemic priapism, blood is trapped and cannot drain properly. In non-ischemic priapism, an injury may cause too much blood to flow into the penis through an abnormal connection between blood vessels.

Possible causes and risk factors include:

• Blood disorders, including conditions that affect the shape or movement of red blood cells
• Certain neurological conditions affecting nerve signals
• Injury to the penis, pelvis, or area between the genitals and anus
• Some medications or treatments that affect blood flow, erections, or the nervous system
• Use of recreational substances
• Previous episodes of priapism
• Some cancers or conditions affecting the blood, although these are less common causes

In some cases, no clear cause is found. People with known blood disorders or a history of repeated prolonged erections should discuss prevention and emergency planning with a qualified healthcare professional.

Diagnosis

Diagnosis begins with a medical history and physical examination. The doctor may ask when the erection started, whether it is painful, whether there was any injury, and whether similar episodes have happened before. It is important to mention any existing medical conditions, prescribed or non-prescribed substances, and recent treatments, as this information can help guide care.

Tests may be used to determine the type of priapism and assess blood flow. These can include a blood sample taken from the penis to measure oxygen levels, blood tests to look for underlying conditions, and imaging such as ultrasound to evaluate circulation. The goal is to quickly distinguish between ischemic and non-ischemic priapism because they are managed differently.

Prompt diagnosis is especially important when the erection is painful or has lasted for several hours. Delays may increase the risk of complications, including problems with future erections.

Treatment Options

Treatment depends on the type of priapism, how long it has been present, the level of pain, and any underlying cause. Ischemic priapism is usually treated urgently to restore normal blood drainage and reduce the risk of tissue injury.

Possible hospital-based treatments may include:

• Removing trapped blood from the penis using a medical procedure performed by a healthcare professional
• Flushing the affected area with sterile fluid in a controlled setting
• Medicines administered by a clinician to help blood vessels and drainage return toward normal function
• Surgical procedures if less invasive measures are not successful or if the episode has been prolonged
• Treatment of an underlying condition, such as a blood disorder, if identified

Non-ischemic priapism may sometimes be monitored if there is no severe pain and blood oxygen levels are adequate, but this decision must be made by a doctor. In some cases, a procedure to reduce abnormal blood flow may be recommended.

For recurrent priapism, a urologist may suggest a prevention plan based on the person’s medical history and cause. Management may involve coordinated care with other specialists when blood or neurological conditions are involved.

When to See a Doctor

Seek urgent medical care if an erection lasts four hours or longer, if there is significant penile pain, or if priapism occurs after an injury. Do not wait for the condition to resolve on its own when symptoms are prolonged or painful.

Medical evaluation is also important if prolonged erections happen repeatedly, even if they go away without treatment. Recurrent episodes may be a sign of an underlying condition and can become more serious over time.

Priapism can feel embarrassing to discuss, but urologists and emergency clinicians are trained to manage it confidentially and professionally. Prompt care can help reduce the risk of complications and guide appropriate treatment for the individual situation.