Pityriasis rosea - DermNet
The herald patch is a single patch that appears before the generalised rash of pityriasis rosea. It is a slightly raised, oval, salmon-pink or red plaque 2–5 cm in diameter, with a peripheral scale trailing just inside the edge of the lesion , like a collaret.
Pityriasis rosea - Symptoms & causes - Mayo Clinic
2024年7月12日 · Pityriasis rosea typically begins with an oval, slightly raised, scaly patch — called the herald patch — on the face, back, chest or abdomen. Before the herald patch appears, some people have headache, fatigue, fever or sore throat.
Pityriasis Rosea: Diagnosis and Treatment - AAFP
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: Signs and symptoms - American Academy of Dermatology
2024年3月1日 · Herald patch grows. For a few days to 2 weeks, the herald patch may be the only sign of pityriasis rosea on your skin. During this time, the patch grows, often to about an inch in diameter (A), but some can reach 4 inches in diameter. While rare, some people develop 2 or more herald patches (B).
Pityriasis Rosea: Stages, Photos, Treatments - Verywell Health
2023年3月7日 · Pityriasis rosea is an itchy rash that begins with a herald patch. This is a single round or oval-shaped lesion that is 2 to 10 centimeters (cm) in diameter. It looks like ringworm and usually appears on the torso.
Pityriasis rosea - Wikipedia
In most cases, a single, 2 to 10 cm (1" to 4") oval red "herald" patch appears, classically on the trunk or neck, having an appearance similar to ringworm. [9] Occasionally, the herald patch may occur in a hidden position (in the armpit, for example) and not be noticed immediately.
Pityriasis Rosea: Symptoms, Causes, and Treatment - WebMD
2023年10月24日 · That’s called the “herald patch” or “mother patch.” It’s usually oval-shaped and about 2-10 centimeters (a little less than an inch to almost 4 inches) in diameter. You may find it slightly...
Pityriasis Rosea (Christmas Tree Rash): Causes & Treatment
The symptoms of pityriasis rosea usually develop in stages: You may initially develop a fever, headache or upper respiratory infection. You may develop a raised, discolored, circular or oval-shaped patch that ranges from 1 to 6 centimeters (cm). This patch is …
Pityriasis rosea - NHS
The first stage of the rash is a single, scaly patch called a herald patch. The herald patch is usually oval or round, slightly raised and about 2cm to 5cm across. It usually appears on the chest, thigh, upper arm or neck, but you can get it anywhere on the body.
Pityriasis rosea - The Primary Care Dermatology Society
2022年5月28日 · Pityriasis rosea is an acute self-limiting rash of unknown cause. A herald patch precedes the main rash by a few days, it is larger than subsequent lesions, usually 2-5 cm in diameter, bright-red with fine scale and a sharply demarcated border.