The symptoms of allergic rash are characterized by the appearance of macules, erythema, papules, papules, blisters, and blisters on the skin surface. And it can cause secondary rashes including vesicles, oozing, scratches, scales, crusts, blood crusts, ulcers such manifestations with some itching or stinging sensation due to scratching. It can also lead to infection, with yellow oozing, yellow vesicles, and yellow crusts. If the infection is severe, it can cause localized redness, swelling, elevated skin temperature and positive pressure pain. The clinical treatment can be anti-allergic treatment, and if there is a corresponding infection, it should be treated with oral amoxicillin capsules anti-infective drugs.