Severe hair loss should be alerted to the occurrence of some diseases, such as androgenetic alopecia, patchy baldness, postpartum alopecia, etc. The causes of different treatments are different, and they should be consulted in time, and the doctor should give appropriate treatment. Common treatments include medication and surgery. 1. Androgenetic alopecia: male patients can take oral finasteride for treatment, while women mainly choose spironolactone and other drugs, and at the same time, topical minoxidil tincture and other drugs. When the effect of medication is unsatisfactory, it can be treated by hair transplantation surgery. 2. Patchy baldness: usually related to endocrine, genetic, autoimmune and so on. It can be treated with topical minoxidil tincture, glucocorticoid such as compound betamethasone injection intradermal injection, oral compound glycyrrhizin and other drugs. 3. Postpartum hair loss: related to the sharp decline in estrogen levels after childbirth, usually about 6 months to return to normal, without special treatment. In addition, hypothyroidism and fungal infections can lead to severe hair loss, and severe hair loss should be treated with medication as prescribed by the doctor.