Color Changes in the Penis: Causes and Concerns - Urology

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The distal end of the penis is dark brown?


The lower part of my penis has turned light black, which is noticeably different in color from the upper part.
What could be the issue? Thank you.

kkk, 10~19 year old female. Ask Date: 2015/11/29

Dr. Fu Shizhang reply Urology


It could be a bruise or it may be due to pigment deposition.

Reply Date: 2015/11/29

More Info


When it comes to changes in the color of the penis, particularly when you notice a significant difference between the shaft and the tip, there are several potential causes that could explain this phenomenon. It's important to understand that variations in skin color can be influenced by a variety of factors, including natural pigmentation, blood flow, and even external factors like friction or irritation.

Firstly, the penis is made up of different types of skin, and the coloration can vary naturally. The shaft of the penis may appear darker than the glans (tip) due to a higher concentration of melanin, the pigment responsible for skin color. This is a common occurrence and is usually not a cause for concern. However, if the change in color is sudden or accompanied by other symptoms, it may warrant further investigation.

One possible cause of a change in color could be related to increased blood flow or engorgement during arousal, which can temporarily alter the color of the penis. Additionally, conditions such as bruising or trauma can lead to localized discoloration. If you have recently engaged in vigorous sexual activity or experienced any form of injury, this could explain the change.

Another consideration is the presence of skin conditions. For instance, conditions like lichen sclerosus or vitiligo can lead to changes in pigmentation. Lichen sclerosus is a chronic skin condition that can cause white patches and may lead to discomfort. Vitiligo, on the other hand, results in loss of pigmentation and can affect any area of the skin, including the genital region.

Infections or sexually transmitted infections (STIs) can also lead to changes in color. For example, certain STIs may cause inflammation or lesions that can alter the appearance of the skin. If you notice any accompanying symptoms such as itching, burning, discharge, or sores, it is crucial to seek medical attention promptly.

Moreover, factors such as hygiene and skin care products can play a role in skin discoloration. Irritation from soaps, lotions, or other products can lead to inflammation and changes in color. It’s advisable to use gentle, unscented products and to maintain proper hygiene to prevent irritation.

If the color change is persistent, accompanied by discomfort, or if you have any concerns about your sexual health, it is essential to consult a healthcare professional. A urologist or dermatologist can provide a thorough examination and may recommend tests to rule out any underlying conditions.

In summary, while variations in the color of the penis can be normal and often harmless, significant changes, especially if sudden or accompanied by other symptoms, should be evaluated by a medical professional. Maintaining good hygiene, being mindful of any products used on the skin, and monitoring for any additional symptoms are important steps in managing your health. If in doubt, don’t hesitate to reach out to a healthcare provider for personalized advice and reassurance.

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