Pityriasis Rosea

Pityriasis rosea is a common skin rash. It usually begins as a large circular or oval spot on the abdomen, back or chest, though it can appear anywhere.

The cause of pityriasis rosea is unknown, but it’s likely a virus. Some evidence suggests it may be brought on by one of two common types of herpes virus (not the strains that cause cold sores). It’s not thought to be contagious.

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