Consider allergic dermatitis or urticaria, both are allergic diseases, anti-allergy treatment can be, the specific program varies depending on the disease. The rash of urticaria is not fixed in location and may fade on its own, with no trace of fading, and behaves like a mosquito bite bump, medically known as a wind cluster. The location of allergic dermatitis is relatively fixed, and the rash may worsen with rising temperature, bathing, emotional excitement, stimulating diet, etc., but generally does not subside to no trace. The treatment of both is based on oral anti-allergy medication (cetirizine tablets, ebastine tablets, etc.) and topical application of glyburide lotion and Eudragit ointment, supplemented with compound glycyrrhizin tablets and anti-wind and anti-itch granules. Urticaria is more focused on oral anti-allergy drugs, and atopic dermatitis is more focused on topical drugs. Oral medications for hives cannot be stopped suddenly, while atopic dermatitis can be used only when the rash is extensive or when itching significantly affects sleep. Regardless of the disease, you should pay attention to avoid eating, do not eat irritating food, such as alcohol seafood beef and mutton, do not scalding, do not use soap bathing milk to stimulate the skin, more rest, appropriate exercise, improve resistance, such as recurrent attacks, you can improve the allergen test.