Dermatology – MCQ 18 – 16 year-old boy with multiple, erythematous, annular lesions

A 16 year-old boy presented with asymptomatic, multiple, erythematous, annular lesions with a collarette of scales at the periphery of the lesions present on the trunk. The most likely diagnosis is:
A. Pityriasis versicolor
B. Pityriasis alba
C. Pityriasis rosea
D. Pityriasis rubra pilaris

Correct answer : C. Pityriasis rosea

The classical lesions of pityriasis rosea are described in the question.