Papular erythema may be related to atopic dermatitis, eczema, etc., which can be treated with medicines, such as antihistamines and glucocorticoid drugs. 1. Allergic dermatitis: If the patient’s skin is stimulated by dust or pollen, it may induce allergic dermatitis and the symptoms of papular erythema may appear on the body. For this situation, usually can choose antihistamines for treatment, such as loratadine, cetirizine hydrochloride and so on. 2. Eczema: In addition to the symptoms of papular erythema, eczema is also accompanied by varying degrees of burning sensation and itching. For this situation, usually can choose to use topical glucocorticoid drugs for treatment, such as mometasone furoate ointment, dinexed cream and so on. There are other causes of papular erythema on the body, it is recommended that patients go to the regular hospital in time to find out the cause of the disease, standardized treatment, so as to avoid delaying the disease and causing adverse consequences.