Autologous hair transplantation is the first choice. If the scar is small, skin plastic surgery can be considered before hair transplantation to minimize the scar.
If it is seborrheic alopecia, drugs should be used to control oil secretion first, and then autologous hair transplantation should be considered.
neuropathic alopecia
Surgery is not recommended within six months after hair loss, because it can be cured with drugs. If you still can't grow hair after half a year, you can consider autologous hair transplantation.
Disease alopecia
First, treat the primary disease. If the primary disease can't grow hair after half a year of cure, then consider hair transplantation.
Drug alopecia
Generally, hair can grow naturally within 3 ~ 6 months after drug withdrawal, without surgery, but special circumstances are not excluded.
These are some hair loss cases suggested by hair transplant. I hope my suggestion can help you!