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Pityriasis Rosea - Causes, Symptoms and Treatment
Definition Pityriasis rosea (PR) is an acute and characteristic exanthem that has been described for more than 2 centuries. Initially, a primary plaque, called a herald patch, is seen. It is a rash that occurs most commonly in people between the ages of 10 and 35, but may occur at any age. The rash can last from several weeks to several months. Usually there are no permanent marks as a result of this condition, although some darker-skinned persons may develop long-lasting flat brown spots that eventually fade. Sometimes the disease can cause a more severe skin reaction. Some patients with this disease will have some itching that can be severe, especially when the patient becomes overheated. Occasionally there may be other symptoms, including tiredness and aching. The rash usually fades and disappears within six weeks but can sometimes last much longer. These spots may itch badly. If the rash is on your back, it may have the shape of a Christmas tree. Causes
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