Pityriasis rosea - Symptoms & causes - Mayo Clinic
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 Rash: Symptoms, Causes, & Treatment - WebMD
2023年10月24日 · What Is Pityriasis Rosea? Pityriasis rosea, a rash that usually appears on the torso, upper arms, thighs, or neck, may sound worse than it really is. The condition has a name that’s hard...
Pityriasis Rosea (Christmas Tree Rash): Causes & Treatment
2022年6月17日 · Pityriasis rosea (pih-tuh-RY-uh-sis ROH-zee-uh) is a common skin condition that causes patches of your skin to develop raised, scaly rashes. It may appear on any part of your body, but it usually appears on the trunk (torso), arms and legs.
Pityriasis rosea - DermNet
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: Signs and symptoms - American Academy of Dermatology
2024年3月1日 · Pityriasis rosea is a common condition, which causes a harmless rash on the skin. The rash usually lasts 6 to 8 weeks before disappearing, but it can last longer. Where does pityriasis rosea appear on the body? The rash can develop anywhere on the skin or scalp. However, it usually begins on the chest, abdomen, or back and spreads.
Pityriasis rosea - Diagnosis & treatment - Mayo Clinic
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.
Pityriasis Rosea - Johns Hopkins Medicine
Pityriasis rosea is a type of skin rash. It is also called Christmas tree rash. It starts with 1 large, scaly patch. It may be round or oval. This is called the herald patch. It then causes many more small patches. The rash most often appears on the chest, back, and belly. It can take 1 to 3 months to go away.
Pityriasis rosea - Wikipedia
After the herald patch appears, usually some days or weeks later, a rash of many small (5–10 mm; 1⁄4 " to 1⁄2 ") pink or red, flaky, oval or round spots appear. They are mostly situated on the trunk and upper limbs. They follow the skin's cleavage lines, which on the upper chest and back produce a characteristic "christmas-tree" distribution. [9]
Pityriasis rosea - NHS
Check if you have pityriasis rosea. The main symptom of pityriasis rosea is a rash. Some people get flu-like symptoms a few days before the rash appears, including: tiredness; a sore throat; a high temperature; a headache; The rash appears in 2 stages. Stage 1: single, round patch. The first stage of the rash is a single, scaly patch called a ...
Pityriasis rosea: FAQs - American Academy of Dermatology
2024年3月1日 · What is pityriasis rosea? It’s a common condition that causes a rash on the skin. This rash is harmless and usually lasts 6 to 8 weeks before disappearing. While harmless, getting a diagnosis can be important. This rash may look like ringworm, psoriasis, or eczema, which often require treatment.