Pityriasis rosea - Symptoms & causes - Mayo Clinic
网页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 - DermNet
网页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 ...
Pityriasis rosea - Diagnosis & treatment - Mayo Clinic
网页2022年10月11日 — Diagnosis. 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 pityriasis rosea rash from other, similar rashes.
Pityriasis Rosea - Johns Hopkins Medicine
网页What is pityriasis rosea? Pityriasis rosea is a mild, but common, skin condition. Characterized by scaly, pink, inflamed skin, the condition can last from 1 to 3 months and usually leaves no lasting marks. What causes pityriasis rosea? The cause of pityriasis rosea is not known, but it is commonly believed to be caused by a virus or bacteria.
Pityriasis rosea: Signs and symptoms - American Academy of Dermatology
网页Although signs and symptoms can vary, the following explains what generally happens when someone gets pityriasis rosea. Before you see signs on your skin: Many people remember feeling sick for a day or two before a large patch or rash appears on their skin.
Pityriasis rosea - UpToDate
网页2023年3月9日 — Pityriasis rosea (PR) is an acute, self-limited, exanthematous skin disease characterized by the appearance of slightly inflammatory, oval, papulosquamous lesions on the trunk and proximal areas of the extremities (picture 1A-E). The diagnosis and management of this disorder are reviewed here.
Pityriasis rosea: Diagnosis and treatment - American Academy of Dermatology
网页If you have pityriasis rosea, the rash with go away without treatment. Some people see the rash disappear within 6 to 8 weeks, but it can take 5 months or longer for the skin to clear. While you don’t need to treat the rash, some patients ask for …
Pityriasis rosea: Overview - American Academy of Dermatology
网页What is pityriasis rosea? This condition causes a rash that will clear on its own. The first sign of this rash is often a large oval patch on the skin, which is followed by many smaller patches or tiny bumps.
Pityriasis rosea - Symptoms, diagnosis and treatment - BMJ Best …
网页2022年8月16日 — Pityriasis rosea (PR) is an inflammatory skin condition of uncertain aetiology, although an unknown infectious agent has been suggested. PR manifests as an acute, self-limiting, inflammatory eruption characterised in the majority of patients by a single larger lesion, the herald patch, followed by eruption of smaller papulosquamous oval lesions.
Pityriasis Rosea: An Updated Review - PubMed
网页Pityriasis rosea is a common, acute, self-limiting exanthematous skin disease that primarily affects children and young adults. The condition is characterized by a "herald patch" after which oval erythematous squamous lesions appear along Langer's lines of cleavage on the trunk and proximal extremit ….