Preputial Edema: Causes and Concerns in Urology

Preputial edema

Hello, doctor.
In the past two days, I have been trying to retract my foreskin behind the glans, exposing the glans all day.
However, I noticed while showering that the area next to the frenulum of the foreskin is swollen, but it is not painful or itchy.
It looks smooth and shiny, resembling a large blister.
Could this swelling be caused by friction from my underwear, or could there be other factors involved?

Xiao Gao, 10~19 year old female. Ask Date: 2018/06/29

Dr. Sun Hongshun reply Urology

Normally, some individuals may have a foreskin ring (a structure similar to a rubber band).
If the glans is exposed for too long, it can lead to poor blood circulation, which may very likely result in the situation you described.
It is advisable for you to visit a hospital, where you will receive a satisfactory response.

Reply Date: 2018/06/29

More Info

Preputial edema, or swelling of the foreskin, can occur for a variety of reasons, and your recent experience of pushing the foreskin back to expose the glans (the head of the penis) may indeed be a contributing factor. It is essential to understand the potential causes and implications of this condition, especially in the context of urology.

Causes of Preputial Edema
1. Mechanical Irritation: As you mentioned, the friction from your underwear or any movement can lead to irritation and swelling of the foreskin. When the foreskin is retracted, it may cause the skin to stretch and become inflamed, leading to edema. This is particularly true if the foreskin is not accustomed to being retracted for extended periods.

2. Infection: Infections, such as balanitis (inflammation of the glans) or posthitis (inflammation of the foreskin), can also cause swelling. These infections can be due to poor hygiene, irritants, or sexually transmitted infections. Although you mentioned that there is no pain or itching, it is still essential to monitor for any signs of infection, such as redness, discharge, or a foul odor.

3. Allergic Reactions: Sometimes, contact dermatitis from soaps, lotions, or laundry detergents can lead to localized swelling. If you have recently changed any products that come into contact with the genital area, this could be a potential cause.

4. Lymphatic Issues: The lymphatic system plays a crucial role in fluid balance. If there is an obstruction or issue with lymphatic drainage in the area, it could lead to localized swelling. This is less common but worth considering if the swelling persists.

5. Other Medical Conditions: Conditions such as lymphedema, which is the accumulation of lymph fluid due to a blockage in the lymphatic system, can also cause swelling. However, this is typically associated with more systemic issues.

Concerns and Recommendations
- Observation: Since the edema is not accompanied by pain or itching, it may resolve on its own. However, it is crucial to observe the area for any changes, such as the development of pain, increased swelling, or signs of infection.

- Hygiene: Maintaining good hygiene is vital. Gently clean the area with mild soap and water, and ensure that it is dried thoroughly afterward. Avoid using harsh soaps or products that may irritate the skin.

- Avoiding Irritation: If the edema is due to friction, consider wearing looser-fitting underwear or avoiding activities that may exacerbate the irritation until the swelling subsides.

- Consultation: If the swelling persists for more than a few days, worsens, or if you develop any additional symptoms (such as pain, discharge, or fever), it is essential to consult a healthcare professional. A urologist can provide a thorough examination and determine if any underlying conditions need to be addressed.

In summary, while the preputial edema you are experiencing may be due to mechanical irritation from the retraction of the foreskin, it is essential to monitor the situation closely. Maintaining good hygiene, avoiding further irritation, and seeking medical advice if symptoms persist will help ensure that any potential issues are addressed promptly.

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