Alopecia areata is usually caused by qi and blood deficiency, liver and kidney deficiency, local allergy, autoimmune and other reasons, and long-term alopecia will form alopecia areata. A small number of patients are caused by heredity, because alopecia areata is hereditary.

1, deficiency of both qi and blood

If the patient is deficient in qi and blood, it will easily lead to alopecia areata, and most patients with deficiency of qi and blood are weak and sick. This will lead to the patient's weak body resistance, more prone to various diseases, especially hair loss will be more serious. If qi and blood are seriously damaged, it may also affect scalp health, thus forming alopecia areata.

2. heredity

Alopecia areata is hereditary. If the patient's parents have alopecia areata, there is a great possibility of alopecia areata.

3. Deficiency of liver and kidney

Alopecia areata is usually caused by lack of nutrition in hair, which leads to hair loss. Lack of nutrition in hair is caused by deficiency of liver and kidney. The liver controls blood and the kidney controls essence. If the liver and kidney are deficient, it will lead to the deficiency of essence and blood, which will make the hair lack nutrition, and in the long run it will form alopecia areata.