What is the disease caused by blisters on the foreskin?

Blisters on the foreskin may be related to genital herpes, balanitis, contact dermatitis, fixed drug eruption, herpes zoster and other diseases. It is recommended to seek medical treatment promptly for a clear diagnosis and carry out targeted treatment under the guidance of a doctor.

1. Genital herpes

Genital herpes is mainly caused by herpes simplex virus type 2 infection and is a sexually transmitted disease. The blisters are mostly distributed in clusters, accompanied by burning pain or itching, and form erosion after ulceration. Antiviral drugs such as acyclovir cream and penciclovir cream can be used as directed by the doctor. In severe cases, oral administration of valacyclovir hydrochloride tablets is required. Patients should avoid sexual intercourse until recovery.

2. Balanitis

Balanitis is often caused by bacterial or fungal infection and manifests as redness, swelling, blisters or pustules on the foreskin. White discharge can be seen in Candida albicans infection. Clotrimazole cream or compound ketoconazole cream can be used externally, and mupirocin ointment can be used in case of bacterial infection. Keep the area clean and dry on a daily basis and avoid using irritating lotions.

3. Contact dermatitis

Contact with allergens such as condoms, detergents, etc. may cause allergic blisters with significant itching. Suspicious items need to be stopped immediately, rinsed with water and then applied with hydrocortisone butyrate cream. People with recurring attacks should undergo allergen testing.

4. Fixed drug eruption

After taking certain drugs such as sulfonamides and antipyretics and analgesics, dark red blisters with clear boundaries may appear at the junction of skin and mucous membranes such as the foreskin. After diagnosis, allergenic drugs should be stopped and oral loratadine tablets combined with mometasone furoate cream should be used externally.

5. Herpes zoster

When the varicella-zoster virus recurs, clusters of blisters may appear along the nerve distribution, accompanied by severe neuralgia. Famciclovir capsules combined with methylcobalamin tablets need to be used early to nourish the nerves, and pregabalin capsules can be added to those with severe pain.

During the period of foreskin blisters, you should wear loose cotton underwear and avoid scratching or popping the blisters yourself. Wash with warm water every day and keep dry. Suspend sexual life and strenuous exercise. The diet should be light and spicy foods should be avoided. If the blisters enlarge, become suppurative, or are accompanied by fever and other symptoms, you must seek immediate medical attention from a dermatologist or urologist.