What should I do if my face is red and itchy with allergies?

The common causes of face allergy and red and itchy skin include seborrheic dermatitis, contact dermatitis, solar dermatitis, etc., need to clarify the cause of the disease, choose the appropriate medication, treatment.
1. seborrheic dermatitis: the treatment of this disease, you can use topical antifungal treatment, such as clotrimazole, miconazole, etc.; topical glucocorticoid treatment, such as dieldieldield cream, mometasone furoate ointment, etc.; glucocorticoid treatment is ineffective, you can use topical calcium-modulated phosphatase inhibitors, such as tacrolimus, pimecrolimus, etc.; oral antihistamine treatment, such as chlortalidomide, cetirizine and so on.
2. Contact dermatitis: the treatment of this disease, oral antihistamine therapy, such as cetirizine, loratadine, etc.; topical glucocorticoid therapy, such as dinexed cream, mometasone furoate ointment, etc..
3. solar dermatitis: the treatment of this disease, can be used externally compound indomethacin tincture, reduce symptoms; oral antihistamine treatment, such as Benadryl, Loratadine, etc.; serious condition, can be temporarily used glucocorticosteroid treatment, such as dinexed cream, mometasone furoate ointment.
It is recommended that patients go to a regular hospital, after clarifying the disease, under the guidance of the doctor reasonable use of drugs, not blindly self-medication.