Facial skin allergy itchy rash may be related to hives, contact dermatitis and drug rash and other diseases, you can choose the appropriate treatment according to the different diseases to solve. 1. Urticaria: The common causes of urticaria are food, drugs, dust mites and so on. It is recommended that patients identify and stay away from sensitizers and take oral antihistamine drugs such as loratadine. 2. Contact dermatitis: contact dermatitis is an inflammatory reaction at the contact site of the skin after direct contact with an allergic substance. Patients should stop contact with the allergic substances, can be prescribed topical glucocorticoid ointment such as Dinocap and oral antihistamine drugs such as loratadine. 3. Drug rash: drug rash may also lead to facial skin allergies and itchy rash, patients should first stop using all suspected allergy-causing drugs. Patients with mild symptoms can take oral glucocorticosteroids such as prednisone or antihistamines such as loratadine as prescribed by the doctor. All of the above drugs should be taken under medical supervision. There are many other causes of facial skin allergies and itchy rashes, and it is recommended that patients seek timely medical examination to clarify the cause of the disease and cooperate with the doctor for standardized treatment.