Quantcast In the displayed image, the large red circle on the upper chest is the "herald patch" of pityriasis rosea. In pityriasis rosea there are slightly raised pink, scaly lesions. This image displays very fine, scaly, oval, slightly elevated lesions typical of pityriasis rosea. In people with darker skin, the rash of pityriasis rosea can appear as very dark, scaly, slightly elevated lesions. This image displays the round or oval lesions of pityriasis rosea following skin lines like "Christmas tree branches" on the patient's back. This image displays a rash on the patient's trunk typical of pityriasis rosea. In people with darker skin, pityriasis rosea can have a deeper color, as displayed here. This image displays pityriasis rosea on the neck. The dull pink patches of pityriasis rosea typically involve the trunk.
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Pityriasis Rosea:
Information for adults

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Picture of Pityriasis Rosea: In the displayed image, the large red circle on the upper chest is the "herald patch" of pityriasis rosea. Divider line
In the displayed image, the large red circle on the upper chest is the "herald patch" of pityriasis rosea.
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Overview
Pityriasis rosea (PR) is a common non-cancerous (benign) rash that mostly affects the back, chest, and abdomen. It starts fairly quickly, lasts about 6–8 weeks, and is usually not itchy.

The cause of pityriasis rosea is not known, though it may be caused by infection with an unknown virus.
Last Modified: 22 Dec 2008

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