Moreover, this is a kind of systemic itching, which can happen anywhere in the patient's body. The degree of itching varies from person to person, but most people feel itchy, especially at night, which affects their daily sleep. In real life, many people think it is unsanitary when their skin itches. They often wash every day, and the more they wash, the more they itch and scratch, forming a vicious circle. If this happens, we must pay attention to it, which shows that there is something wrong with our health.
Traditional Chinese medicine has accumulated detailed experience in skin itching. Huangdi Neijing said: "The heat of deficiency and evil is also between the skin, and the gas is itchy, the hair is shaking, and the pneumatic is winding." It is pointed out that exogenous pathogenic feeling is an important cause of skin itching.
However, doctors in past dynasties even said that "strong wind makes it itch, but no wind makes it not itch", and that itching is mostly related to feeling the common cold. Some scholars collected and statistically analyzed the TCM literatures about skin itching from 1988 to 20 19, and found that wind is the most common pathogenic factor of itching.
Traditional Chinese medicine believes that cold is one of the six evils in nature (the other five evils are cold, summer heat, dampness, dryness and heat), and the cold has the characteristics of upward divergence, belonging to yang evil, and the cold causes disease, first of all, it hurts the surface, and then the guest itches on the skin, so the position of itchy skin disease is also on the surface. For example, it is recorded in Neijing: "When a cold is in the tendons, the muscles are weak, the true qi is divergent, and the skin is cold and itchy."
This is a natural common cold that attacks the human body and stays on the surface of the human body, causing itching of the skin, and the common cold is easily mixed with other pathogens. For example, the Clinical Guide to Medical Records says, "Of the six qi, only wind energy has five qi." For example, the pathogenic factors such as cold, dampness and heat caused by wind are complicated and changeable, which is one of the important reasons why many patients are stubborn and difficult to cure itching.
In addition, in the process of occurrence and development of pruritic dermatosis, there are internal wind besides external wind, especially in chronic pruritic dermatosis, which is closely related to internal wind. The internal wind that causes skin itching is usually blood deficiency, blood dryness, blood stasis, blood heat and heat overcoming fire, among which liver blood deficiency is the main one among the elderly.
This point is also recorded in the Complete Book of Surgical Syndrome Differentiation and Treatment: "Itching wind ... liver and blood deficiency, summer wind." Liver blood deficiency in the elderly, first, can not maintain the liver body, leading to internal movement of liver wind; Second, the lack of qi and blood makes blood not nourish the skin. Patients with this syndrome often show dry skin, dandruff, itching all over, unbearable at night, which can cause insomnia and listlessness.
"Conclusion of Pathogenic Qi Depression" says: "Those who suffer from wind itching are physically weak and suffer from wind, which enters the pathogenesis and fights with blood gas, and all communication is between the skin." The relationship between wind and blood was pointed out. Therefore, in the treatment of itching, we should follow the principle of "treating wind first, then treating blood, activating blood and extinguishing wind by itself".
The itching caused by exogenous cold is mainly to dispel wind and relieve itching, and drugs such as Schizonepeta, Saposhnikovia divaricata, Angelica dahurica and cicada slough are commonly used in clinic. For endogenous wind, nourishing blood, calming the liver and calming the wind is the fundamental solution.
Danggui Yinzi is a commonly used prescription to treat pruritus due to blood deficiency and wind dryness. This prescription comes from Re-ordering Yanshi Jisheng Prescription, in which Angelica sinensis is the holy medicine for enriching blood and nourishing blood, and it is the monarch medicine in the prescription. Radix Rehmanniae, Radix Paeoniae Alba and Radix Polygoni Multiflori are integrated, nourishing yin and enriching blood, and Radix Astragali benefiting qi and enriching blood, which helps Chinese angelica to treat blood for ministers. Schizonepeta tenuifolia and Saposhnikovia divaricata are used as adjuvant drugs, Tribulus terrestris is used to dispel wind and relieve itching, and Ligusticum chuanxiong is used to promote qi and blood circulation. Glycyrrhiza uralensis Fisch blends various drugs. Looking at the whole prescription, nourishing blood and nourishing yin without leaving evil, dispelling wind and eliminating evil without hurting healthy qi, tonifying middle warmer and dispelling cold, treating both the symptoms and root causes, is effective in treating itching caused by blood deficiency and wind dryness.
It should be noted that in old age, qi and blood gradually weaken and gastrointestinal function decreases. If there is repeated skin itching, it is not recommended to take medicine by yourself, so as to avoid careless medication, damage the spleen and stomach and affect its transport function. In addition, the key to treatment is to find the cause and remove the inducement. If it is difficult to heal for a long time, further relevant examinations are needed to rule out skin itching caused by diabetes and thyroid diseases.
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