The main lesions are erythema, maculopapular rash and papules, with thin scales that do not form plaques and less pronounced pruritus. In view of its mild condition, the topical medications used are relatively mild and can be used in the form of weak hormones, such as mometasone furoate cream, fluticasone propionate cream, dinaide cream, etc., vitamin D analogues, including carbotriol ointment, tacalcitol ointment, etc. The course of treatment is shorter than that of plaque psoriasis, and special attention should be paid to the rational selection of drugs. Most patients with this disease are caused by upper respiratory tract infections, and a corresponding treatment should be done for upper respiratory tract infections in order to obtain a better treatment effect.