Dermatology · UKMLA & AKT
Sebaceous hyperplasia
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise sebaceous hyperplasia — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- Small (1-5 mm), dome-shaped, soft, yellow/pale yellow-white papule - reflects lipid-rich sebocytes
- Central umbilication (dell) - defining feature; central pore corresponding to dilated follicular infundibulum
- Lobulated surface - multilobulated, cauliflower-like, yellow lobules around the central dell
- Distribution - sun-exposed face: forehead, nose, cheeks, temples
- Asymptomatic - no itch, spontaneous bleeding, or ulceration; if present, reassess
- Multiple lesions - consider ciclosporin therapy or Muir-Torre syndrome
Dermoscopy shows a crown of vessels (hairpin/linear) around a central follicular opening with pale yellow lobules - highly characteristic and helps exclude BCC.
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