Red Foreskin (Balanitis): Causes, Evaluation, and Treatment

Balanitis (inflammation of the glans penis) and balanoposthitis (foreskin + glans) are common causes of foreskin redness.

Etiology

Evaluation

• History: sexual activity, hygiene, products, diabetes, medications.
• Exam: retract foreskin (if possible), note extent, discharge, ulcers, lymph nodes.
• Tests: Glucose/HbA1c, swab culture (bacterial/fungal/viral), STI panel, KOH prep, biopsy if suspicious.

Treatment

• Candida: Topical clotrimazole/miconazole × 1–2 wks ± oral fluconazole; treat partner if symptomatic.
• Bacterial: Topical fusidic acid/mupirocin or oral (flucloxacillin).
• Dermatoses: Low-potency steroid (hydrocortisone 1%) short-term; calcineurin inhibitors (tacrolimus) for maintenance.
• Irritant: Emollients, soap substitute, avoid triggers.
• Phimosis: Topical steroid (betamethasone 0.05% × 4–8 wks) + stretching; preputioplasty or circumcision if failed.
• Paraphimosis: Emergency manual reduction (Dundee technique) or dorsal slit.

Prevention

• Gentle daily retraction + rinse with water (no soap inside).
• Dry thoroughly.
• Manage diabetes.
• Condoms for STI prevention.

Most balanitis is benign and treatable. Persistent or atypical cases need biopsy to exclude malignancy or BXO.

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Category	Causes	Clues
Infectious	Candida (most common), HSV, HPV, syphilis, gonorrhea, chlamydia, streptococci, staphylococci	Satellite pustules (Candida), vesicles (HSV), urethral discharge (STI)
Dermatologic	Psoriasis (inverse), lichen planus, lichen sclerosus (BXO), seborrheic dermatitis, contact dermatitis	Plaques elsewhere, Koebner, Wickham striae, white sclerotic patches (BXO)
Irritant / Allergic	Soaps, lubricants, condoms (latex), laundry detergent, fragrances	History of new product; improves with avoidance
Hygiene-related	Overwashing (soap), underwashing (smegma accumulation)	Retractile foreskin; smegma pearls
Anatomic	Phimosis (non-retractile), paraphimosa (retracted, strangulated — emergency)	Ballooning with voiding, inability to retract
Systemic	Diabetes (↑ Candida risk), reactive arthritis, immunosuppression	Glycemic control, joint/eye symptoms
Malignancy	Penile cancer (rare; erythroplasia of Queyrat, squamous cell)	Persistent lesion, ulcer, induration, inguinal nodes