2024年7月12日 · Pityriasis rosea is a rash that often begins as an oval spot on the face, chest, abdomen or back. This is called a herald patch and may be up to 4 inches (10 centimeters) across. Then you may get smaller spots that sweep out from the middle of the body in a shape that looks like drooping pine-tree branches.
Pityriasis rosea is a self-limiting rash, which resolves in about 6–10 weeks. It is characterised by a large circular or oval "herald patch", usually found on the chest, abdomen, or back. The herald patch is followed some time later, typically two weeks or so, by the development of smaller scaly oval red patches, resembling a Christmas tree ...
2018年1月1日 · Pityriasis rosea is a common self-limiting rash that usually starts with a herald patch on the trunk and progresses along the Langer lines to a generalized rash over the trunk and limbs. The...
Pityriasis rosea is a common harmless skin rash usually occurring between the ages of 10 and 35 but which may occur at any age. It may occur at any time of the year but is most commonly seen in the spring and fall.
2024年3月1日 · Pityriasis rosea (PR), meaning rose-colored scale, is an acute self-limiting papulosquamous disorder. [1] Also known as pityriasis circinata, roseola annulata, and herpes tonsurans maculosus, PR is often distinguished by the development of a slightly raised, oval, scaly patch called the "herald patch."
The diagnosis of pityriasis rosea is based on clin - ical and physical examination findings. Classic pityriasis rosea starts with a herald patch on the trunk (Figures 1 and 21) in up to 90%...
2022年10月11日 · In most cases, your health care provider can identify pityriasis rosea by looking at the rash. You might need a scraping or possibly a skin biopsy, which involves taking a small piece of the rash for testing. This test can help tell a …