Pityriasis Rosea

pityriasis rosea TAS

Pityriasis rosea is a common skin rash most often occurring in people during the spring and fall seasons and usually goes away on its own within 6-8 weeks. The condition usually affects children and young adults and is rare in older individuals.

Physical exam

This skin rash begins with a large, mildly raised, scaly patch called the herald patch that occurs on the back, chest, or abdomen. A few days to weeks after the herald patch forms, smaller round, pink, scaly lesions are seen on the trunk in a pine-tree pattern. The skin area may be itchy.


The lesions and rash will resolve without medical treatment usually within 6-12 weeks. Treatment may include:

  • Henry Ford Phototherapy
  • Antihistamines to treat the itch
  • Moisturizers to help reduce the scaliness of the skin
  • Topical corticosteroids to help with the itching and to decrease the redness
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