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Lichen Planopilaris — SCE Dermatology MCQ

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HardHair DisordersLichen PlanopilarisSCE Dermatology

A woman has multifocal scarring alopecia with perifollicular erythema and keratotic casts. Biopsy shows a lichenoid lymphocytic infiltrate centred on the follicular infundibulum and isthmus. She also has classical wrist lichen planus. What is the diagnosis?

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Correct answer: D — Lichen planopilaris

Lichen planopilaris is a lymphocytic cicatricial alopecia targeting the upper follicle, with perifollicular erythema, scale or casts and permanent loss of follicular openings. Coexisting cutaneous lichen planus strengthens the clinicopathological diagnosis.

Reference: https://academic.oup.com/bjd/pages/bad-guidelines