First, the skin characteristics of the elderly: 1, skin aging, epidermal thinning, dermal atrophy, where the elastic fiber changes, so the elasticity is very poor. Such as the face appears obvious wrinkles. 2, the elderly skin often appear dry, luster disappears, pigment deepening, relaxation, wrinkles more. Sometimes cracking occurs, or bran-like flaking appears on the surface. The pores on the skin also become open, especially the exposed parts are especially obvious. 3.The skin color deepens due to pigmentation in the elderly. 4, skin blood vessels decrease with age, capillary walls become thinner and more brittle, therefore, capillary dilation, purpura and capillary hemangioma and other lesions may appear in different degrees. Geriatric pruritus is a common skin disease in the elderly. Modern medical research shows that senile pruritus is mostly due to a physiological decline in hormone levels, skin aging and atrophy, sebaceous glands and sweat glands secretion function decreases the water content of the skin, lack of sebum moisturizing, easily triggered by the stimulation of surrounding environmental factors. Second, the performance of pruritus in the elderly: senile pruritus is mostly seen in older people over 60 years old, the incidence of men is higher than that of women, and the itching is more serious in the evening than during the day. Mainly manifested as dry and thinning skin, the surface of the chaff-like flaking, long-term scratching, the skin will appear many scratches, blood scabs, pigmentation, moss-like changes, heavy skin infections can occur. Third, the causes of itching in the elderly: people to the elderly, often due to mood swings, temperature changes and other induced pruritus, this disease is often seen as “chicken and garlic” and ignored. But because of the prolonged and sometimes light, over time will affect the mood of the elderly, resulting in insomnia, and even become irritable, irritable and restless, have to draw the attention of the elderly. Fourth, the pathogenesis of pruritus in the elderly: the occurrence of pruritus in old age is closely related to the physiological changes in the elderly. From the skin, it is mostly due to degenerative atrophy of skin gland function, and thus many wrinkles, brittle skin, decreased resistance; from the visceral system, mostly related to endocrine changes, allergic factors, arteriosclerosis, diabetes, anemia, habitual constipation and liver disease, or sometimes the signal of certain malignant diseases. In the face of the complicated manifestations of persistent pruritus, it is important to be vigilant and self-identify first in order to exclude pruritus triggered by various diseases. Anyone suffering from persistent, recurrent and persistent pruritus that cannot be diagnosed quickly should consider the possibility of all the above-mentioned diseases. See a physician if necessary to find the root cause of the itching and to treat the cause. Five, how to reduce itching to a minimum: 1, keep a happy mood: shift the attention to the “itch” to prevent mental factors aggravate the whole body itching. Try to avoid scratching to prevent complications of infection. 2, skin care: elderly skin because of physiological degeneration, skin performance lack of adequate sebum protection, dry skin dehydration, too diligent bathing will make the skin more and more dry, such as bath water too hot, alkaline soap or rubbing, will aggravate the state of dry skin itching. In addition, due to the lower temperature in winter, sweating less, the number of baths should be reduced, the way the bath to shower is better, the water temperature to avoid too high, do not rubbing, the conditions of the body with a bathtub soak the best, after the bath in the whole body or often itchy parts of the body to apply a bit of emollient containing more oil to keep the skin moisturized. 3, the choice of clothing: or blended towels, socks, underwear or rough texture of underwear, skin irritation, thermal underwear has become very popular in recent years, but some thermal underwear is made of a variety of composite sandwich material, two layers of ordinary cotton fabric in the middle of the sandwich layer of fluffy chemical fibers, as a way to prevent the human skin and the outside world for gas and heat exchange, so as to achieve the purpose of warmth. But this kind of clothing containing chemical fiber components to wear on the human body is easy to generate static electricity, these static electricity around the human body can produce a large number of cations, it can make the human skin moisture reduction, increased dander. At the same time, some poor quality clothing now contains too much formaldehyde, formaldehyde can also lead to a number of skin diseases, causing itchy skin. Therefore, the elderly should try to choose cotton clothing, should also be dressed loosely. 4, diet: diet should be light, avoid smoking, alcohol, strong tea and coffee, less spicy and stimulating food, avoid eating food that is easy to cause allergies. Research shows that too much too diligently addicted to tobacco, alcohol, strong tea, coffee or spicy food, the skin is also a stimulus, the skin will be stimulated by the itchy feeling. Therefore, appropriate to quit bad habits for the prevention and treatment of itchy skin in the elderly is very important. At the same time, eat more milk, eggs, lean meat, soy products and fresh vegetables and fruits, but also an appropriate amount of vitamin C, vitamin B and for vitamin E, etc., but also drink an appropriate amount of water to replenish body moisture. 5, medication to be careful: inappropriate topical drugs often stimulate the skin, exacerbating itching. Available stove glycolic lotion, anti-itch water and hormone ointment.