The main reason is that after age, the sebaceous gland secretion metabolism is very low, sebaceous glands can not play a role in nutrition and moisturizing the skin, and another reason is that in winter the skin itself is dry, the climate is cold, resulting in dry skin, the combination of the two reasons, easy to produce senile itchy skin. In addition, the elderly have some other factors, such as bathing, the elderly bathing more diligent, or bathing with very hot water to wash; the elderly to the winter more afraid of cold, using electric blankets and so on, or the room temperature is relatively high, open air conditioning for too long, these situations and other reasons will lead to more dry skin, prone to itchy skin. This is a problem that the elderly must pay attention to after entering the winter, doctors recommend that into the fall, the elderly do a good job of protective measures, apply moisturizing cream, do daily moisturizing, to prevent and control the elderly dry, elderly skin itching is very helpful. Be careful, the bath water can not be too hot, the bath time, the number of baths can not be too much, too often, try to use less electric blankets, the house temperature to maintain a moderate, not always in dry, high temperature conditions.