Hair loss is very common in daily life, normal people can have different degrees and different amounts of hair loss every day, this normal hair loss is not a disease, only when a person sheds more than 100 hairs per day, or there is significant loss in a certain area, then it can be called pathological hair loss. Morbid hair loss is clinically known as alopecia, and there are many types and complex causes. In recent years, due to changes in climate, environment, diet and other factors and pollution, coupled with increased pressure on people’s lives and work, there is a clear trend of growth in alopecia areata. The most common occupations are drivers, clerks in foreign companies and other professions with high concentration or stress, irregular life and chaotic work and rest time. Among the types of hair loss, androgenic alopecia, seborrheic alopecia and baldness are more common in men, while hair loss caused by hormonal disorders after childbirth is more common in women. So, what causes hair loss and how to prevent the occurrence of alopecia areata? To prevent the occurrence of hair loss, first of all, we must find the cause of hair loss, clinically there are many causes of hair loss, there are infections, scalp or internal diseases, food drug or chemical poisoning, neurological disorders, malnutrition, anemia and other factors, from the perspective of traditional Chinese medicine, hair loss is also related to the function of the liver, kidneys, lungs and other internal organs, Chinese medicine has said, “the lungs are the main skin and hair “, “hair is the residue of blood”, “the kidney collects essence and its flower is in the hair”, etc., generations of Chinese medical doctors believe that the pathogenesis of hair loss are: Qi and blood deficiency, liver and kidney deficiency, liver depression and blood deficiency, damp heat erosion, etc., comprehensive above, it can be seen that the hair loss The causes of hair loss are very complex, therefore, the prevention of hair loss should also be carried out dialectically, and measures should be taken after the causes are clear in order to achieve satisfactory results. For example, for seborrheic alopecia in men, you can use drugs that regulate sebum secretion, such as vitamin A and B vitamins, as well as Chinese herbal medicine that strengthens the spleen and resolves dampness, and your daily diet should be based on light and coarse grains, with less stimulating food and cold drinks, and appropriate activities to maintain a regular life and sufficient rest time. The Chinese herbal medicine Yunling powder can be taken with milk. In recent years, many people think that hair loss is caused by kidney deficiency, which is obviously very one-sided and a misunderstanding, although kidney deficiency can cause hair loss, but not very common, so kidney supplementation can not cure all hair loss, blind kidney supplementation may also cause all kinds of adverse reactions, because kidney deficiency is a Chinese medicine, divided into kidney Yang deficiency and kidney Yin deficiency, Yin and Yang is a completely different concept, if kidney Yang deficiency taking If kidney yin deficiency medicine, or both kidney yin deficiency taking kidney yang deficiency medicine, both may aggravate the condition. In addition, if the hair loss is caused by blood deficiency, blood stasis, liver depression, phlegm and damp yin, the treatment with medicine is completely different. In short, hair loss is a group of complex diseases, for the treatment of hair loss, according to the different conditions to choose different treatment methods, in addition to the dialectical selection of Chinese and Western drugs, but also according to the situation of different patients, the choice of local injection, plum blossom needle, phototherapy, Chinese medicine fumigation, acupuncture, bloodletting, acupuncture point injection, with external washing, external application and other methods, generally can achieve very satisfactory results.