White Membrane and Bumps on the Penis: When to Seek Help - Urology

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Inquiry about the glans and foreskin?


Hello doctor, after masturbating today and taking a shower, I noticed a white membrane on one side of my foreskin that wouldn't wash away even after rinsing with water.
After my shower, I used a disinfected cotton swab with a bit of iodine, but it only removed a little.
I'm concerned about being too forceful and possibly causing a tear.
Is it normal to have that grayish-white membrane? Additionally, while using the iodine, I accidentally discovered a small yellowish bump inside the foreskin that looks like a pimple or sebaceous material.
I would like to know if it's common to have such bumps.
It's very small and I usually don't notice it unless I pull back the foreskin.
Although it doesn't hurt, should I go to the hospital for an examination? However, I couldn't find it again when I looked just now...
but I did see that small bump initially.
I apologize for bothering you and hope you can help me with my questions.

Xiang, 20~29 year old female. Ask Date: 2020/02/05

Dr. Du Mingyi reply Urology


The excessive buildup of smegma, which appears white, may indicate a need for circumcision.

Reply Date: 2020/02/05

More Info


When it comes to concerns about unusual findings on the penis, such as a white membrane and bumps, it's important to approach the situation with a clear understanding of what these symptoms might indicate and when to seek medical help.

Firstly, the presence of a white membrane on the penis, particularly under the foreskin, can be attributed to several benign conditions. One common cause is smegma, which is a combination of dead skin cells, oils, and moisture that can accumulate under the foreskin. Smegma can appear as a whitish substance and is typically harmless. Regular hygiene practices, including gentle cleaning of the area, can help prevent its buildup. However, if the smegma is persistent and does not wash away easily, it may indicate a need for better hygiene or could be a sign of a more serious condition, such as a fungal infection or balanitis (inflammation of the glans).

Regarding the yellow bump you mentioned, it could potentially be a sebaceous cyst, which is a common and harmless condition where a small lump forms due to the blockage of sebaceous glands. These cysts can sometimes appear yellowish and are usually painless. They do not typically require treatment unless they become infected or bothersome.

However, it is crucial to differentiate between benign conditions and those that may require medical attention. Here are some signs that indicate you should seek help from a healthcare provider:
1. Persistent Symptoms: If the white membrane or bump does not improve with proper hygiene or if it worsens over time, it is advisable to consult a doctor.

2. Pain or Discomfort: If you experience pain, itching, or discomfort in the area, this could indicate an infection or another underlying issue that needs to be addressed.

3. Changes in Appearance: If the bump changes in size, color, or texture, or if you notice any discharge, it is important to seek medical evaluation.

4. Associated Symptoms: If you experience other symptoms such as fever, swelling, or systemic symptoms, these could indicate a more serious condition that requires immediate attention.

5. Anxiety and Concern: If you are feeling anxious about the symptoms, it is always better to err on the side of caution and consult a healthcare professional for reassurance and proper evaluation.

In summary, while the findings you described may not be uncommon and could be benign, it is essential to monitor the situation closely. Maintaining good hygiene is key, but if you have any doubts or if symptoms persist, do not hesitate to reach out to a healthcare provider. They can perform a physical examination, provide a proper diagnosis, and recommend appropriate treatment if necessary. Remember, your health and peace of mind are paramount, and seeking help is a proactive step in managing your well-being.

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