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 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. On white skin, the herald patch is usually pink with a red border. On brown or black skin, the herald patch may be darker with a light border. Credit: DR H.C.ROBINSON / SCIENCE PHOTO LIBRARY https://www.sciencephoto.com/media/260599/view Stage 2: widespread rash A widespread rash of small, scaly spots appears about 5 to 15 days after you get the herald patch. Usually you get the rash on your chest and back, but it can appear on the arms or legs. In children, it may appear on the face or scalp. It usually appears in the same place on both sides of the body and may be itchy. On white skin, the spots are pink or red. Credit: ISM/SCIENCE PHOTO LIBRARY https://www.sciencephoto.com/media/694054/view On black or brown skin, the spots can be grey, dark brown or black. Credit: Richard Usatine MD After the rash has gone, you may have some darker or lighter areas of skin. This may be more obvious on brown or black skin. In most people, these should go back to normal within a few months and will not leave permanent scarring.

Pityriasis rosea usually gets better on its own within a few months without any treatment. It might get worse before it goes away completely. If the rash is uncomfortable or itchy, a pharmacist might advise: using an emollient (moisturising treatment for the skin) on the rash taking antihistamine tablets to help with the itching avoiding using soaps and body washes A pharmacist will tell you how often to take or apply any treatments. If these treatments do not work or if you have severe pityriasis rosea, your GP may recommend steroid cream or refer you to a skin specialist (dermatologist).

The exact cause of pityriasis rosea is not known. It may be caused by a virus. Pityriasis rosea cannot spread from person to person.