Allergic dermatitis on the face may be caused by contact dermatitis, eczema, drug rash, urticaria and other diseases, and will be treated by general treatment and medication. 1. Contact dermatitis: allergic dermatitis on the face is considered to be contact dermatitis, patients should actively search for the causative factors to avoid re-exposure. You can follow the doctor’s instructions for topical dexamethasone, halometasone and other glucocorticoid drugs, with anti-inflammatory, anti-itching, anti-allergic effect. 2. Eczema: atopic dermatitis on the face may be caused by eczema, patients should avoid scratching, excessive cleaning of the affected area. You can follow the doctor’s instructions to use glucocorticoid drugs to play an anti-inflammatory, anti-allergic effect, the common drugs are hydrocortisone, trimethoprim and so on. 3. Drug rash: If the drug rash caused by allergic dermatitis on the face, the patient should avoid taking allergy-inducing drugs again, and at the same time to keep the skin clean and dry. You can also follow the doctor’s instructions oral antihistamine drugs, such as loratadine, avastin, etc., to play an anti-inflammatory, anti-allergic effect. 4. Urticaria: Urticaria can also cause allergic dermatitis on the face, patients should keep indoor ventilation, dry bedding. During the period can follow the doctor’s instructions to take antihistamines, such as ebastine, cetirizine, etc., with anti-itching, anti-allergic effect. The causes of atopic dermatitis on the face are many, it is recommended to go to the regular hospital for examination, to clarify the cause of the disease, with the doctor standardized treatment.