When there are red dots on the face patients apply oral and topical drugs for treatment according to the disease, as follows: 1, pressure purpura: can be treated with oral vitamin C capsules, rutin tablets, compound glycyrrhizin capsules, this disease may be caused by increased local pressure after crying or vomiting, increased permeability of small arteries, small fine veins, capillaries, and extravasation of red blood cells; 2, allergic dermatitis: can be treated with oral Benzosuberastine tablets or fexofenadine hydrochloride tablets and combined with compound glycyrrhizin capsules, and can also be treated with topical zinc oxide oil mixed with black bean distillate, 2 times / day application. The disease can appear as red dots and also as a polymorphic rash such as erythema and papules.