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Dermatology · Inflammatory dermatoses
Sample itemWhat finding is characteristic of lichen planus?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Pruritic purple polygonal planar papules
Lichen planus classically causes pruritic purple polygonal flat-topped papules, sometimes with fine white Wickham striae.
Option by option
A. Honey-coloured crusts
Honey crusts indicate impetigo.
B. Pruritic purple polygonal planar papules (correct)
Correct: the six-P morphology is classic for lichen planus.
C. Target lesions after herpes infection
Target lesions suggest erythema multiforme.
D. Greasy scalp scale only
Greasy scale suggests seborrhoeic dermatitis.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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