Herald patch in pityriasis rosea

Close-up of a herald patch on the chest

Pityriasis rosea (say "pih-tih-RY-uh-sus ROH-zee-uh") is a common skin problem that causes a rash. The rash often begins with a herald patch—a single, round-to-oval, pink patch that is scaly with a raised border. The size of the patch ranges from 2 cm (0.8 in.) to 10 cm (3.9 in.).

ByHealthwise Staff

Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine

Adam Husney, MD - Family Medicine

Specialist Medical Reviewer Randall D. Burr, MD - Dermatology

Current as ofOctober 12, 2015

Current as of: October 12, 2015

Author: Healthwise Staff

Medical Review: E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Randall D. Burr, MD - Dermatology