Little red pimples on legs

The essence of allergic purpura is a kind of subcutaneous bleeding, clinical visible purple blood stasis, ecchymosis, part of the rash can protrude from the skin surface, rash pressure does not fade, can be accompanied by joint pain, abdominal pain, etc., more than no itching. Eczematous rash is pleomorphic, bilateral symmetrical distribution, common rash has erythema, papules, rash can be fused into a large sheet, accompanied by severe itching. Keratosis pilaris is more common in adolescents, good hair in the upper arm and thigh extension side, also can be seen in the buttocks, affected parts of the skin has a special rough feeling, accompanied by angular plugs follicular papules for the disease's characteristic performance.