The skin is red and itchy, urticaria, eczema or contact dermatitis and other skin diseases may occur, can be relieved by local medication or systemic drug therapy. 1. Urticaria: local medication can be chosen to stop itching liquid or glycerite lotion, winter can choose Benadryl cream; systemic application of drugs can choose the second generation of H1 receptor antagonists such as loratadine treatment, but also the use of vitamin C synergistic effect. 2. Eczema: acute lesions can be treated with glucocorticoid creams such as hydrocortisone cream if the exudate is less, and boric acid solution can be used for anti-inflammatory and astringent cold wet compresses when the exudate is more, and then glucocorticoid creams are used; antihistamines such as chlortetracycline can be used to treat those whose itching seriously affects sleep. 3. Contact dermatitis: should actively search for the cause of the disease, away from the contact material, depending on the degree of the disease, choose to take antihistamines such as chlortetracycline or glucocorticoids; topical glucocorticosteroid treatment is also effective for the disease. Large areas of red, itchy skin, it is recommended to consult a doctor, under the guidance of the doctor to use medication.