Pityriasis rosea is a self-limited condition, meaning that it goes away on its own, typically within 6–8 weeks, without treatment. Becoming overheated by exercising or taking a hot shower may increase itching or make the rash more obvious. Additionally, some people experience itching with pityriasis rosea. Some people report feeling mildly ill (headache, stuffy nose, muscle aches) for 1–2 weeks before the herald patch forms. The second rash forms a “Christmas tree” pattern on the back. The herald patch is followed 1–3 weeks later by the development of a widespread rash, with smaller (0.5–2 cm) oval patches of pink-to-red, scaly skin on the trunk and upper arms. This “herald patch” is usually located on the trunk, neck, or upper arms. Pityriasis rosea usually begins with a single patch of pink-to-red, scaly skin, from 2–5 cm in size. In an uncommon type of pityriasis rosea, the rash may be concentrated in the armpits and groin or on the face, forearms, and shins. Exposing the skin to ultraviolet light in the first week can help lessen symptoms.The most common locations for pityriasis rosea include: It may help the rash go away sooner in some people. It can help relieve severe itching if needed.Īcyclovir. If you have severe symptoms, your healthcare provider may treat you with any of the below: He or she may prescribe a stronger medicine if drugstore medicine isn’t helping you. Ask your healthcare provider about other anti-itch lotion or cream that can help relieve itching. You can put it on the skin as a cream or take it by mouth as a pill. This is a pink, watery lotion that can help stop itching.Īntihistamine. You can apply this medicine to the rash 2 to 3 times a day, for up to 3 weeks.Ĭalamine lotion. You can treat your itching with any of these:Ĭorticosteroid cream or ointment. Once the rash goes away, it doesn’t come back. The rash should go away without treatment, but it can take 4 to 8 weeks or longer. The patches may itch, especially if your skin gets warmer during exercise or a hot shower. The rash can form the shape of a Christmas tree on your back. It can also show up on the neck and face. Smaller patches then show up in 1 to 2 weeks on the chest, back, belly, arms, and legs. It may be purple, brown, or gray if you have darker skin. The patch may be pink or red if you have pale skin. The rash often starts with one large scaly patch in the shape of a circle or oval. In some people, the rash shows up 1 to 2 weeks after symptoms such as headache, sore throat, nausea, stuffy nose, and fever. If you are pregnant, make sure to tell your healthcare provider about your rash. The rash happens most often in people ages 10 to 35, and in pregnant women. The cause is not yet known but experts think it may be from a virus. Pit-er-EYE-ah-sis RO-zee-ah What causes pityriasis rosea?
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