Overview

Pityriasis rosea (say "pit-uh-RY-uh-sus ROH-zee-uh") is a common skin rash. It usually starts as one scaly and pinkish, purple, or red-brown patch on your stomach or back. Days or weeks later, more small patches appear. The rash may itch, but it will not spread to other people.

Experts aren't sure what causes pityriasis rosea. It may be caused by a virus.

Pityriasis rosea is most common in children and young adults. It lasts 1 to 3 months and then goes away on its own. Medicine can help relieve any itching.

How can you care for yourself at home?

• If your doctor prescribed medicine, use it exactly as prescribed. Call your doctor or nurse advice line if you have any problems with your medicine.
• Use a mild soap or a gentle skin cleanser when you wash your skin.
• Add a handful of oatmeal (ground to a powder) to your bath. Or you can try an oatmeal bath product, such as Aveeno. Keep the water warm or lukewarm. A hot bath or shower may make the rash more visible and itchy.
• Try an over-the-counter 1% hydrocortisone cream for small itchy areas. Use the cream very sparingly on the face or genitals. Note: Do not use the cream on children younger than age 2 unless your doctor tells you to. Do not use in the rectal or vaginal area in children younger than age 12 unless your doctor tells you to.