Elderly back itching may be caused by dry skin, urticaria, eczema and other factors, can be relieved by changing lifestyle habits, medication and other ways. 1. Dry skin: the elderly sebaceous glands, sweat glands secretion function decreases, resulting in the elderly skin is easy to dry caused by itching, can be used externally with some moisturizing milk, vitamin E milk, etc. to keep the skin moist, reduce the number of baths, avoid scratching the skin and other measures to relieve. 2. Urticaria: It is a skin disease characterized by clamminess and angioedema, mostly accompanied by itchy skin. It can be relieved by oral antihistamine drugs such as cetirizine and loratadine, and topical glycerine lotion to relieve itching. 3. Eczema: a chronic itchy skin disease, can also cause back itching symptoms. It can be treated with some hormonal drugs such as dexamethasone and hydrocortisone. There are many reasons for itchy skin, you need to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor’s medication, avoid unauthorized use of drugs.