Eczema dermatitis is usually caused by allergic factors, then the patient can be improved by oral antihistamines, glucocorticosteroids or immunosuppressants. The specific oral which drug is recommended to patients according to the severity of the disease under the guidance of the doctor. 1. Antihistamines: Antihistamines usually have anti-inflammatory and desensitizing effects and are suitable for itchy eczema caused by allergies. Commonly used antihistamines include levocetirizine hydrochloride, olopatadine hydrochloride, loratadine and so on. 2. Glucocorticoid drugs: If eczema patients have anaphylaxis, they can take prednisone, cortisone and other glucocorticoid drugs. 3. Immunosuppressants: Immunosuppressants are suitable for patients with severe eczema, such as cyclosporine, methotrexate and so on. When the patient has eczema dermatitis, it is recommended to go to the hospital in time for examination, and under the guidance of the doctor for drug treatment.