Pityriasis rosea

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Pityriasis rosea: This common skin disease causes patches on the skin. Your dermatologist may call the large patch a mother patch. The smaller patches are daughter patches.

Pityriasis rosea: Overview

Pityriasis rosea: This common skin disease causes patches on the skin. Your dermatologist may call the large patch a mother patch. The smaller patches are daughter patches.

Pityriasis rosea (pit-uh-rahy-uh-sis row-zee-ah) is a common skin disease that causes a rash. This rash usually disappears on its own without treatment. You can expect to see the rash for about 6 to 8 weeks. Sometimes the rash lasts much longer.

Some people who develop this rash see a dermatologist to get treatment for the itch.

If this rash appears during pregnancy, a woman should tell her doctor.

Image used with permission of the American Academy of Dermatology National Library of Dermatologic Teaching Slides


© American Academy of Dermatology. All rights reserved. Reproduction or republication strictly prohibited without prior written permission. Use of these materials is subject to the legal notice and terms of use located at https://www.aad.org/about/legal


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