"It's all right during the day. It's the worst at night. I'm like an ant crawling all over. I can't stand it." "Back itching, chest itching, arm itching, leg itching, soaking in a hot bath is even more itchy!" After winter, many people suffer from rough skin and itching. Li Shenqiu, chief physician of Dermatology Department of Tongji Hospital of Huazhong University of science and technology, said that it is convenient to take a bath in winter, and the situation of skin itching has increased significantly. Skin itching is not necessarily caused by dryness. Some diseases can also cause skin itching, so we can't be careless. Li Shenqiu explained that the skin, like the city wall, is a barrier to the body. Our body will produce emulsion membrane, also known as sebum membrane. Sebaceous glands secrete sebum fusion sweat, forming a natural protective film on the skin surface to help lock in skin moisture. At the same time, sebum metabolism produces fatty acids and effectively inhibit the growth of bacteria and microorganisms. Once the sebum membrane is destroyed, some stimulating elements will enter the epidermal layer, stimulate the nerves in the dermis and cause itching. Scratching may also cause infection or other complications after skin lesions. Skin pruritus may also be an early warning signal of some diseases, such as decreased sebaceous gland function, hyperglycemia, nephropathy, hepatobiliary diseases, tumors, etc. If you find that skin itching is very stubborn, you should be vigilant. You must find a specialist to see a doctor and find the cause in time. Li Shenqiu reminded that for ordinary people, the cleaning frequency should be controlled in winter. It is appropriate to take a bath 1-2 times a week. The water temperature should not be too hot and should not be rubbed vigorously; At the same time, appropriate use of moisturizing cream for moisturizing, especially for infants and the elderly; Choose cotton underwear to avoid static electricity, skin irritation and allergic reaction; The elderly should properly eat fat rich food to protect their skin. (outlook new era)