DermatologyTier 2Topic overview

Ulcers

Framing

  • Ulceration (a break in epithelial/mucosal continuity extending beyond the superficial layers) occurs across genital, oral, and cutaneous (leg ulcer) sites, each with a distinct differential shaped by the site's characteristic infective, inflammatory, vascular, and malignant causes
  • A unifying principle across all ulcer sites: duration and healing trajectory are central to risk-stratifying between a self-limiting/infective cause and one requiring biopsy to exclude malignancy

What sits under this topic

  • See for the sexually transmitted and inflammatory causes of genital ulceration (HSV, syphilis, Behcet)
  • See for the causes and red flags of oral ulceration (recurrent aphthous stomatitis, malignancy risk beyond 3 weeks, systemic disease associations)
  • See leg/venous ulcer content under vascular and dermatology notes for chronic lower-limb ulceration

2 of 2 sections written · drafted 2026-09-14