Perineal Swelling: Is It Normal? - Urology

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Perineal protrusion


Hello, doctor.
When I touch the perineal area from the direction of my buttocks, I notice a slight protrusion (similar to a line).
It doesn't hurt when I press on it, and I can't feel any foreign object, but it becomes more swollen during an erection.
Is this normal? Thank you.

Nìmíng, 30~39 year old female. Ask Date: 2022/01/01

Dr. Li Minghui reply Urology


Hello: If there is no redness, swelling, heat, or pain, there should be no inflammation issues.
If urination is also normal, it is likely not related to the urinary system.
There may be a possibility of an anal issue.
It is recommended to first consult a urologist, and if there are no problems, then see a colorectal specialist.
Wishing you good health.

Reply Date: 2022/01/01

More Info


Understanding perineal swelling can be a concern for many individuals, and it’s important to approach this topic with both sensitivity and a solid understanding of human anatomy and physiology. The perineum is the area between the anus and the genitals, and it plays a significant role in various bodily functions, including sexual activity and childbirth.

From your description, it seems that you are noticing a slight protrusion in the perineal area that becomes more pronounced during an erection. This could be attributed to several factors, and while it may be normal for some individuals, it’s essential to consider the context and any accompanying symptoms.

1. Anatomical Considerations: The perineum contains several structures, including muscles, connective tissue, and blood vessels. During an erection, increased blood flow to the genital area can cause swelling and engorgement of the tissues, which might explain the increased prominence you are observing. This is a normal physiological response.

2. Muscle Tone and Fat Distribution: Variations in muscle tone and fat distribution in the perineal area can also lead to noticeable differences in appearance. Some individuals may have more pronounced muscle or fat in this region, which can create a visible line or bulge.

3. Potential Conditions: While your description does not indicate pain or the presence of a foreign object, it’s still wise to be aware of conditions that could cause swelling or changes in the perineal area. For instance, conditions like varicoceles (enlarged veins in the scrotum) or other vascular issues can lead to swelling. However, these typically present with additional symptoms, such as discomfort or a noticeable mass.

4. When to Seek Medical Advice: If the swelling is accompanied by pain, changes in urination, or any unusual discharge, it would be prudent to consult a healthcare professional. Additionally, if you notice any changes in the size or shape of the swelling, or if it becomes persistent, seeking medical advice would be advisable.

5. Self-Examination and Awareness: Regular self-examination of the genital and perineal areas can help you become more familiar with your body. This awareness can assist in identifying any changes that may require medical attention.
In conclusion, while the swelling you describe may be normal, especially given the physiological changes that occur during an erection, it’s essential to remain vigilant about your body. If you have any concerns or if the situation changes, do not hesitate to reach out to a healthcare provider for a thorough evaluation. They can provide personalized insights based on a physical examination and any necessary diagnostic tests. Remember, maintaining open communication with your healthcare provider is key to ensuring your overall health and well-being.

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