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Pityriasis rosea is the name given to a type of rash that can appear on the skin. It will usually last for 6 to 8 weeks and then disapper on its own. Anyone can get it including a 4 year old.

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11y ago

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Pityriasis rosea?

DefinitionPityriasis rosea is a common type of skin rash seen in young adults.Causes, incidence, and risk factorsPityriasis rosea is believed to be caused by a virus. It occurs most often in the fall and spring. Although pityriasis rosea may occur in more than one person in a household at a time, it is not thought to be highly contagious.Attacks generally last 4 - 8 weeks. Symptoms may disappear by 3 weeks or last as long as 12 weeks. There is generally a single large patch (herald patch) followed several days later by a rash.SymptomsItching of the lesions (mild to severe)Skin lesion or rashCenters have wrinkled (cigarette paper) appearanceLesions appears like a scale that is attached at the edges and loose at the centerMay follow cleavage lines or appear in a "Christmas tree" patternMay spreadOval plaque, papule, or maculeSharp border (edge)Starts with a single (herald) lesion followed several days later by more lesionsSkin redness or inflammationSigns and testsYour health care provider can usually diagnose pityriasis rosea by the way the rash looks. A blood test may be needed to rule out a form of syphilis, which can cause a similar rash. Occasionally, a skin biopsy may be needed to confirm the diagnosis.TreatmentIf symptoms are mild, no treatment may be needed.Gentle bathing, mild lubricants or creams, or mild hydrocortisone creams may be used to soothe inflammation. Antihistamines, taken by mouth, may be used to reduce itching.Moderate sun exposure or ultraviolet light treatment may help make the lesions go away more quickly. However, care must be taken to avoid sunburn.Expectations (prognosis)Pityriasis rosea usually goes away within 6 - 12 weeks. It doesn't usually come back.Calling your health care providerCall for an appointment with your health care provider if you have symptoms of pityriasis rosea.ReferencesHabif TP. Psoriasis and other papulosquamous diseases. In: Habif TP, ed. Clinical Dermatology. 4th ed. Philadelphia, Pa: Mosby Elsevier; 2004: chap 8.Lim HW. Eczemas, photodermatoses, papulosquamous (including fungal) diseases, and figurate erythemas. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 464.


White spots on chest resembling ringworm?

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