Total hair loss may be a normal physiological phenomenon, or it may be due to bad habits, androgen secretion abnormalities and other factors, you need to clarify the cause of the symptoms of the treatment, the common treatment modalities are medication, surgery and so on. 1. Physiological alopecia: hair growth is cyclical, including the growth period, regression and resting period, under normal circumstances, the amount of hair loss in the daily amount of 50 ~ 100, no obvious pain, while there will be an equal amount of hair newborn hair, the amount of hair to maintain the dynamic balance of the hair, the hair loss is a normal phenomenon, do not need to be treated. 2. Bad habits: frequent perming and dyeing of hair may damage the hair follicles, resulting in hair loss, it is recommended to reduce the number of perming and dyeing, use mild and non-stimulating shampoo, shampooing water temperature should not be too high, combing the hair to be gentle, and do not often tie the braid is too tight and so on. 3. Androgenetic alopecia: usually develops at puberty, mainly affecting the center of the head, oral finasteride tablets, minoxidil, in order to slow down the rate of hair loss, hair transplantation and other surgical treatments if necessary. 4. microbial infection: syphilis, tuberculosis bacillus, human immunodeficiency virus (HIV) and other germs of infection may lead to engage in causing severe hair loss, need to clarify the cause of the disease, antibacterial, antiviral treatment. There are many reasons for total hair loss, and complex, it is recommended to exclude physiological hair loss, correct bad habits, and still do not see an improvement in time to seek medical attention, under the guidance of the doctor for relevant examinations, in order to clarify the cause of the disease, targeted treatment, to avoid self-medication, so as to avoid delays in the condition.