Symptoms of pityriasis rosea

Pityriasis rosea is a kind of rose-colored rash rich in chaff scales. Maculopapules are typical inflammatory self-limiting papules and scaly skin diseases with unknown causes. It is currently believed to be related to viral infection. Cellular immune response may also participate in this disease. When resistance is reduced and pressure is too high, it is more likely to occur. Pityriasis rosea mostly affects young and middle-aged people and occurs frequently in spring and autumn. The initial symptoms are isolated rose-colored reddish lesions, oval or circular lesions, which can rapidly expand to two to three centimeters in diameter, clearly defined, covered with fine dander, we call the mother spot, often occurs on the trunk or proximal limbs. After one to two weeks, the lesions will gradually increase, expanding the shape is similar to the mother spot, and the diameter is smaller. Often oval in shape, with no free margin of this fine scale, the long axis of distribution parallel to the texture of the skin, accompanied by varying degrees of itching.