1, there are many reasons for hair loss, including heredity, spirit, stimulation, seasonal climate, long-term lack of vitamins in the body, malnutrition, endocrine disorders, work and study pressure, lack of sleep, environment and so on.

2, if there is not much hair, it is purely normal. Everyone loses about 40 hairs every day, just like animals lose their hair. If the number of alopecia exceeds 100, and for how long, check and treat it as soon as possible.

3. Screen out the subcutaneous hair follicles in the hair loss area. If there are subcutaneous hair follicles, drug therapy, laser therapy and mesoderm therapy can be used to improve hair. If the subcutaneous hair follicle is severely atrophied to necrosis, the hair loss area can only be improved by hair transplantation.