Dermatology – MCQ 22 – Factor worker with itchy, annular plaques

A 36 year old factory worker developed itchy, annular scaly plaques in both groins. Application of a corticosteroid ointment led to temporary relief but the plaques continued to extend at the periphery. The most likely diagnosis is:
A. Erythema annulare centrifugum
B. Granuloma annulare
C. Annular lichen planus
D. Tinea cruris

Correct answer : D. Tinea cruris

Tinea cruris is characterised by itchy, annular scaly plaques in both groins. There is central clearing and advancement at the periphery.

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