Foreskin and Circumcision: Anatomy, Phimosis, and Evidence-Based Management

The foreskin (prepuce) is a double-layered fold of skin and mucosa covering the glans penis. It has finite elasticity; forced retraction causes microtears, scarring, and iatrogenic phimosis.

Normal Development

• Birth: Physiologic phimosis (non-retractile) — normal.
• Childhood: Gradual separation of adhesions; retractability increases with age.
• Adolescence: >90% retractile by age 16–18.

Pathologic Phimosis

Scarring from balanitis xerotica obliterans (BXO), recurrent balanitis, or forced retraction creates a fibrotic ring preventing retraction. Symptoms: ballooning with urination, pain, recurrent infections, urinary retention.

Management Options

• Conservative (first-line): Topical corticosteroids (0.05% clobetasol, 8–12 weeks) + gentle manual stretching — high success rate.
• Preputioplasty: Dorsal slit with transverse closure — preserves foreskin while widening the opening.
• Circumcision: Complete prepuce removal. Indicated for BXO, failed conservative management, parental preference, or religious/cultural reasons.

Circumcision is not required for a long but retractable, asymptomatic foreskin. The decision should be informed, consensual (when possible), and performed with adequate analgesia.