With the arrival of spring and summer, many people develop itchy skin, which can be caused by mental factors, such as emotional stress, anxiety, agitation, and depression. In addition, systemic diseases such as liver and kidney diseases, blood disorders, endocrine and metabolic diseases, as well as drug side effects and food allergies, can cause pruritus. Prevention of pruritus method; skin stratum corneum under normal conditions, consisting of 5 to 20 layers of flat cells that have died with the metabolism of the epidermis, the uppermost layer of keratinocytes are constantly shed, which is the white fine scales often seen when taking off clothes. After the skin is soaked in water, the water content of the stratum corneum increases and it becomes loose. Hot water immersion and excessive scrubbing lead to excessive shedding of normal keratinocytes and thinning of the sebaceous film, causing the destruction of the skin barrier, which is the most common cause of dry and itchy skin. The correct skin cleansing method should be adjusted at any time according to the seasonal climate and personal skin condition. Such as summer skin metabolism is strong, sebum and sweat secretion more, can be daily bath. The elderly do not have to bathe every day, bath time should not be too long, the water temperature should be kept below 40 ℃. Do not rub the bath hard to prevent the integrity of the skin stratum corneum is artificially destroyed, dry skin. Use neutral or weak acid when bathing, and preferably use medical skin care products. Medical skin care products are sold in pharmacies and are used under the guidance of a doctor to repair damaged skin without affecting its function and help it resist external stimuli. The main difference between medical skin care products and regular skin care products is that the ingredients are clear, safe and more targeted. Heat stimulation can suppress itchiness, so most patients with pruritus like to use high temperature water “scalding”, which will feel comfortable at the time, but “scalding” will seriously damage the sebaceous film on the surface of the skin, making the skin drier and itch more serious, so do not Use salt water or pepper water to scald. In addition, scratching can make the local sensory nerves more excited and sensitive due to repeated stimulation, making itching further aggravated, the more itchy the patient will scratch, the more itchy, forming a vicious circle. You can wear loose cotton intimate clothing, clothes do not remain on the washing liquid and other chemical ingredients; winter indoor heating temperature should not be too high, you can use humidifiers or planting flowers and other methods to maintain the appropriate indoor humidity, in order to reduce the evaporation of skin moisture. If you always wait until you are thirsty to drink water, the human body will be in a state of dehydration, and once the body is dehydrated, it will take water from the skin. People with dry skin can also increase the intake of fat in food appropriately. Tip: If the itching is severe, you must go to the dermatology department of a regular hospital and do the appropriate examination to exclude other lesions in the body. The hospital affiliated to the Armed Forces Medical College is The medical treatment, scientific research and teaching as one. The new self-blood immunotherapy, which is to carry forward the essence of Chinese medicine, for a variety of blood heat blood poison, their own blood out of a few milliliters, injected into specific points, with the Chinese medicine acupuncture points closed, can be said to “fight poison with poison”, so that many stubborn itchy skin diseases such as control.