Note: Pityriasis rosea is commonly called "Christmas tree rash" because of its characteristic tree-like pattern: one large oval patch that branches out into smaller pink or dark patches.

have similar characteristics, though pityriasis rosea often branches out on the skin with a distinctive evergreen tree pattern. The two rashes have different causes and treatments. Ringworm is a ...

The plaques usually spare the face, scalp and distal extremities. The rash of pityriasis rosea typically lasts approximately 5 weeks, and resolves by 8 weeks in more than 80% of patients.

Pityriasis rosea (PR) is an acute inflammatory skin disorder ... of cleavage on the trunk in a characteristic Christmas tree-like pattern. Body surfaces with significant sun exposure are usually ...