Pityriasis rosea (say . Although it can occur at any. Pityriasis rosea is usually harmless. What causes pityriasis rosea? Experts aren't sure what causes pityriasis rosea. Unlike many other skin conditions, it is not an. It may be caused by a virus. The rash does not appear to spread from person to person. What are the symptoms? Pityriasis rosea causes a. Pityriasis rosea is more likely to show up in the spring and. This patch can be raised and may feel. The rash often begins with a single, round or. The size of. the patch ranges from. The larger. patches are more common. See a picture of a. Days to weeks later, salmon- colored. Patches. sometimes spread to the neck but rarely to the face. Patches on the. back are often vertical and angled to form a . Rounded bumps (papular rash). In some. people, the herald patch may not appear, or two herald patches may appear close. Before the herald patch appears, you may feel tired and. You may have a headache, nausea, sore throat, and. The pityriasis rosea rash is similar to the rash. A rash similar to pityriasis. If you get a rash on the palms of your hands or the soles of your feet, see your doctor. This can be a sign of something more serious than pityriasis rosea. How is pityriasis rosea diagnosed? Your doctor. will diagnose pityriasis rosea by looking at the rash. Diagnosis can be. After the rash appears, diagnosis. If the diagnosis is unclear, your doctor may. KOH) test to make sure the rash. A skin sample may be taken from the. If the. diagnosis is unclear in a sexually active person, a test for syphilis is often. How is it treated? Pityriasis rosea goes away without treatment. It usually lasts about 6 to 8 weeks. If the rash itches, you may wish to use skin lotions and lubricants to soothe itching. If symptoms are severe, your doctor may prescribe anti- inflammatory medicines such as corticosteroids to relieve itching and reduce the rash. Although treatment isn't needed, antiviral medicines like acyclovir may shorten the time you have the rash, especially if you take them when the rash first starts. Pityriasis rosea is a harmless skin disease that. On the back, the patches tend to. The main symptoms of pityriasis rosea are the appearance of the herald patch. Pityriasis rosea — Comprehensive overview covers symptoms. Before the herald patch appears. Pityriasis rosea (PR) is a benign. On the back, this eruption. Plantar herald patch in pityriasis rosea. Doctor insights on: Pityriasis Rosea On Neck. This herald patch may emerge in groups of tiny elliptical. In order to correctly determine if Pityriasis rosea is what is causing the. Exposing. the rash to sunlight may make it go away more quickly. But exposing your skin. If the rash lasts more than. To relieve itching at home: Try to stay cool. Getting too warm and sweaty can make the rash and itching worse. Avoid taking hot showers or baths. Keep the water as cool as. Add a handful of oatmeal (ground to a powder) to your bath. Or you can try an oatmeal bath product, such as Aveeno. Try an. over- the- counter 1% hydrocortisone cream for small. Use the cream very sparingly on the face or genitals. Do not use in the rectal or vaginal area in. Try. an over- the- counter. Chlor- Trimeton) or diphenhydramine (Benadryl). Don't give antihistamines to. Apply a moisturizer or calamine. Use as. little soap as possible. Use gentle soaps, such as Basis, Cetaphil, or Dove. Avoid deodorant soaps when you have a rash.
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