Medical Term:

pityriasis rosea

 

Definition: A self-limited eruption of macules or papules involving the trunk and, less frequently, extremities, scalp, and face; the lesions are usually oval and follow the crease lines of the skin; occurs most commonly in children and young adults and is frequently preceded by a single larger scaling lesion known as the herald patch.

Synonym(s): pityriasis circinata, pityriasis maculata

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