Subcutaneous Bumps on the Penis: Causes and Concerns - Urology

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A lump has developed under the skin of the penis?


The doctor recently discovered a small, hard lump on the left side of the penis, which is not painful and feels like a nodule about 3 to 4 mm in size.
Could this be due to excessive masturbation or folliculitis? Since it is located underneath the skin rather than on the surface, thank you.

Jp, 30~39 year old female. Ask Date: 2018/06/13

Dr. Du Mingyi reply Urology


Most cases are folliculitis; maintaining cleanliness and dryness is sufficient.

Reply Date: 2018/06/13

More Info


When it comes to subcutaneous bumps on the penis, it's important to approach the situation with a clear understanding of potential causes and concerns. The small, hard bump you described, measuring about 3-4mm and located on the left side of the penis, could be attributed to several factors, and while it may not be painful, it is still advisable to monitor it closely.

One common cause of such bumps is the presence of sebaceous cysts. These are benign lumps that can occur when the sebaceous glands become blocked. They are typically painless and can vary in size. Another possibility is a condition known as pearly penile papules, which are small, harmless bumps that often appear around the corona of the glans and are completely normal anatomical variations.

Another potential cause could be folliculitis, which is the inflammation of hair follicles. This condition can occur due to irritation, infection, or blockage of the follicles, leading to small, red bumps that may or may not be painful. However, since you mentioned that the bump is not painful and feels like a hard nodule, folliculitis may be less likely.

It's also worth considering that the bump could be a result of a benign growth, such as a dermatofibroma or a lipoma, both of which are non-cancerous tumors. These types of growths are generally harmless and do not require treatment unless they cause discomfort or cosmetic concerns.

Regarding your concern about excessive masturbation, it is unlikely that this activity would directly cause a subcutaneous bump. However, if there is any irritation or trauma to the area, it could potentially lead to localized inflammation or the development of a cyst.

While the bump you described does not seem to present immediate cause for concern, it is essential to keep an eye on it. If you notice any changes in size, color, or if it becomes painful, it would be prudent to seek medical evaluation. A healthcare professional can perform a physical examination and may recommend further diagnostic tests if necessary to rule out any underlying conditions.

In summary, subcutaneous bumps on the penis can arise from various benign causes, including sebaceous cysts, pearly penile papules, or other non-cancerous growths. While these bumps are often harmless, monitoring their characteristics and consulting with a healthcare provider if any changes occur is the best course of action. Remember, maintaining good hygiene and being aware of any changes in your body are key to ensuring your overall health.

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