Bleeding From Penis: Causes And When To See A Doctor

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Medical News TodaySubscribeWhy am I bleeding from the penis?

Medically reviewed by Roger Bielinski, MD FACS — Written by Zawn Villines — Updated on March 31, 2025

Symptoms
Causes
Treatments
Prevention
Seeing a doctor
Summary

Bleeding from the penis may be due to an injury, infection, or other health condition. It may occur on its own or in urine or semen.

In many cases, losing a small amount of blood from the penis is harmless, and the bleeding may stop on its own. However, severe or chronic bleeding from the penis may signal a more serious problem that requires prompt medical treatment.

This article outlines the potential causes of bleeding from the penis. It also lists some potential treatment options and provides advice on when to see a doctor.

Narrowing down the symptoms

a man looking pensive sat on his bed as he may have bleeding from the penis — Several conditions may cause bleeding from the penis.

When a person is bleeding from the penis, some factors can help them identify the cause. These factors include the location of the bleed and the situation in which the bleeding occurs.

The sections below may help someone narrow down the symptoms.

Bleeding on the penis

Blood on the skin of the penis shaft or head may indicate a skin injury. Such injuries may be minor or severe.

Minor injuries may result from accidentally scraping the penis against a clothing seam or zip. Severe injuries may involve deep cuts to the penis.

Rarely, bleeding on the penis may be a symptom of penile cancer. People should see their doctor as soon as possible if they experience any of the following symptoms:

a crusty rash on the penis
an unusual, bloody growth on the penis
a sore that continually bleeds and does not heal

Bleeding during ejaculation

The medical term for blood in the semen is hematospermia.

In many cases, hematospermia occurs for no apparent reason, and it usually resolves independently. Other times, hematospermia may occur as a result of:

long periods of sexual inactivity
a prostate infection
an infection in the urethra
taking anticoagulant medications

Rarely, bleeding during ejaculation may be a symptom of prostate cancer.

Bleeding when urinating

Hematuria is the medical term for blood in the urine. It may signal a urinary tract infection (UTI), but there are many other benign and malignant causes.

People may overlook single cases of blood in the urine, but this is a mistake. All instances warrant medical investigation to ensure that significant problems are not overlooked. For example, bladder cancer is a common cause of hematuria, and with prompt diagnosis, it is very treatable in its early stages.

Bleeding from the urethra when not ejaculating or urinating

The urethra is the tube that drains urine from the bladder. It ends at the urethral opening in the tip of the penis.

Bleeding from the urethra when not urinating or ejaculating could indicate either an injury to the urethra or an injury to one of the veins in the penis. Trauma to the urethra is a common cause of bleeding and is frequently caused by the insertion of foreign bodies into the urethra

Causes

Several conditions can cause bleeding from the penis. The sections below outline some of these in more detail.

Infections

Various infections can cause someone to bleed from the penis or blood to appear in the urine. The most common is a UTI.

Some symptoms of a UTI include:

urine leakage
an urgent and intense need to urinate
a feeling of incomplete bladder emptying
passing only a few drops at a time
painful urination
pain in the bladder or pelvic region

If a person develops symptoms of a UTI, he should see a doctor. Without treatment, a UTI may spread to the kidneys. UTIs are a common cause of sepsis, which can be fatal.

An untreated kidney infection can cause permanent kidney damage and may also spread to the bloodstream, which can have serious consequences.

Prostatitis

Blood in the semen can sometimes signal prostatitis, which is the medical term for inflammation and swelling of the prostate. The prostate is a small, walnut-shaped gland that makes up part of the male reproductive system.

Sometimes, prostatitis is a chronic condition that comes and goes. Symptoms of chronic prostatitis include:

pain when urinating
bladder pain
sexual difficulties, such as difficulty getting or maintaining an erection or difficulty ejaculating
pelvic pain

People may also develop acute prostatitis as a result of an infection. The symptoms typically appear suddenly and may include:

bladder pain
painful ejaculation
nausea
fever

Ruptured blood vessels

Although rare, an injury to a blood vessel within the penis may cause bleeding from the urethra or bleeding beneath the skin. The latter may look like a bruise.

A ruptured blood vessel in the penis is not life threatening. However, immediate treatment will be necessary to stop the pain and prevent further damage to the penis.

Injuries

According to the American Urological Association, the penis is one of the least injured organs of the human body. Nonetheless, urethral and penile trauma can occur due to unsafe activities and accidents.

scratches or cuts
bruises
a fracture
friction burns

Minor injuries to the skin of the penis are no more dangerous than those on other parts of the body. However, if the urethra becomes injured, this may increase the risk of certain infections.

Any injury that is very painful or causes significant bleeding warrants a visit to the doctor. Penile fractures require immediate medical attention and usually surgical repair.

Cancer

Although rare, cancerous growths or lesions can develop on the penis. Unlike benign growths, they may not heal.

Cancerous growths or lesions may grow, change shape, or crack open and bleed. If there is bleeding, a person may notice the blood in their urine or semen.

In its early stages, penile cancer is highly treatable. Because of this, those with unusual growths or other symptoms should seek prompt medical attention.

Another source of bleeding from the urethra is a primary urethral tumor, though these are very rare.

Idiopathic

Doctors use the term idiopathic to describe conditions that have no identifiable cause.

In most cases, idiopathic bleeding resolves on its own and does not come back. However, a person should return to their doctor if they experience any new symptoms or their existing symptoms worsen.

Treatments

Not all cases of bleeding from the penis require treatment. Sometimes, there may be only minor bleeding from a small injury or only a few drops of blood in the ejaculate on a single occasion. In either case, the symptoms usually resolve on their own.

In other cases, however, treatment may be necessary. The type of treatment a person receives will depend on the cause of the bleeding.

Treatment options may include:

Antibiotics: If a person has sustained a serious injury to their penis, a doctor may prescribe a course of antibiotics to prevent infection. They may also prescribe antibiotics to help treat UTIs and prostatitis.
Wound care: Injuries to the skin of the penis may require regular cleaning to prevent infection. Deep cuts may require stitches.
Surgery: Severe penile injuries will likely require surgical repair. Ruptured veins in the penis may also require surgery, especially if the rupture is severe.
Cancer treatment: The type of cancer treatment a person receives will depend on the type of cancer they have and its location in the body. Some potential treatment options include:
- radiation therapy
- chemotherapy
- surgery
- drainage or removal of the lymph nodes in the groin

Prevention

It is not always possible to prevent certain causes of bleeding from the penis. However, the following self-care measures can help reduce the risk of experiencing penile injury or bleeding:

wearing protective gear when playing sports
urinating as soon as the urge arises
drinking plenty of water, which will reduce the risk of UTIs
using barrier methods such as condoms when having sex, which can prevent some infectious causes of prostatitis
talking to a doctor about chronic pain in the penis or rectum

When to see a doctor

Bleeding from the penis is not usually an emergency. However, a person should go to the emergency room immediately if they experience any of the following:

an inability to stop the blood loss
intense and unbearable pain
nausea and a high fever

They should call their doctor within 24 hours if they experience any of the following:

blood in the urine
a cut that begins to look infected
symptoms of prostatitis or a UTI
sores on the penis that bleed

A person who experiences a one-off episode of a small amount of blood in the semen may choose to wait a few days to see if the symptom reoccurs. If it does, they should schedule an appointment with their doctor.

Summary

Bleeding from the penis can be worrying, but it is not usually an emergency.

Even when the cause of the bleeding is serious, seeking prompt and appropriate treatment can often cure the underlying problem.

Anyone concerned about the health of their penis should see a doctor, who will work to diagnose the problem and provide appropriate treatments.

Men's Health
Infectious Diseases / Bacteria / Viruses
Urology / Nephrology

How we reviewed this article:

SourcesMedical News Today has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

Mathers MJ, et al. (2017). Hematospermia—A symptom with many possible causes.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5387851/
Overview: Kidney infection. (2025).https://www.nhs.uk/conditions/kidney-infection/
What is hematuria? (n.d.).https://www.urologyhealth.org/urology-a-z/h/hematuria

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Medically reviewed by Roger Bielinski, MD FACS — Written by Zawn Villines — Updated on March 31, 2025

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