Elderly itchy body may be dry skin, do not pay attention to personal hygiene and other physiological factors and allergic diseases, eczema and other pathologic factors, it is recommended to exclude physiological factors in time to consult a doctor to clarify the cause of the disease after targeted treatment. 1. Physiological factors: the air is too dry, drink less water, excessive cleaning of the skin, often eat spicy and stimulating food, etc. will lead to the elderly skin dry, so that the symptoms of itching skin. In addition, the elderly do not pay attention to personal hygiene can also lead to itchy skin. 2. Allergic diseases: such as insect bite dermatitis, contact dermatitis, etc., there will be itching symptoms, usually accompanied by redness, swelling, stinging and other symptoms. 3. Eczema: Eczema is an inflammation of the superficial dermis and epidermis caused by a variety of internal and external factors, which can occur in all parts of the body and can lead to itchy skin and symptoms of lesions such as papules and pimples. There are many possible causes of itchy body in the elderly, and patients are advised to seek timely medical attention for a clear diagnosis.