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The appearance of small white bumps on the foreskin may be related to ectopic sebaceous glands, pearly penile papules, genital warts, fungal infections or allergic reactions. It is recommended to seek medical treatment promptly for a clear diagnosis and avoid self-treatment.

1. Ectopia of sebaceous glands

Ectopia sebaceum is a common cause of small white bumps on the foreskin. It manifests as light yellow or white papules ranging from pintip to millet size, which are painless and itchy. It may be related to changes in hormone levels during puberty and usually does not require treatment. If it affects the appearance or is complicated by infection, you can use erythromycin ointment or mupirocin ointment for local application as directed by your doctor, and use laser treatment if necessary.

2. Pearly penile papules

Pearly penile papules mostly occur on the edge of the coronal sulcus and appear as pearly white or light red translucent papules arranged in rows. It is a benign hyperplasia and is related to poor local hygiene or chronic irritation. Just keep the perineum clean and dry, and generally no medication is needed. If the patient is obviously anxious, he or she can use flufenamic acid butyl ointment to relieve symptoms as directed by the doctor.

3. Genital warts

Genital warts are caused by human papillomavirus infection and appear as cauliflower- or papillary white growths that can be spread through sexual contact. It is necessary to seek medical advice and conduct an acetate white test to confirm the diagnosis, and follow the doctor's advice to use imiquimod cream or podophyllotoxin tincture for local treatment. In severe cases, freezing or laser surgery is required to remove the warts.

4. Fungal infection

Candida albicans infection may cause a white membrane with small bumps on the foreskin, accompanied by itching and redness. It is mostly related to diabetes, low immunity or poor hygiene habits. After diagnosis, you need to use clotrimazole cream or miconazole nitrate powder for topical antifungal treatment as directed by your doctor, while keeping the affected area ventilated and dry.

5. Allergic reaction

Contact with detergents, condoms or medications may trigger allergic dermatitis, which appears as white papules with significant itching. It is necessary to immediately stop using the suspected allergen, wash the affected area with warm water, and follow the doctor's instructions to take oral loratadine tablets or topical hydrocortisone cream to relieve symptoms. The author recommends allergen testing for recurrent relapses.

Pay attention to the cleanliness of the perineum on a daily basis, choose cotton breathable underwear, and avoid excessive cleaning or use of irritating lotions. People with underlying diseases such as diabetes should actively control blood sugar. If the white pimple continues to enlarge, rupture, or is accompanied by secretions, you must immediately seek medical attention from a dermatology or urology department. Do not squeeze or apply medication on your own. Sexually transmitted disease-related lesions require screening and treatment by partners.