Hair transplantation is a minimally invasive operation on epidermis. But it is very different from the known routine surgery.
The operation will only go 2-3 mm below the scalp surface, and will not involve important blood vessels and nerves, and will not have any impact on the brain.
Moreover, most hair transplants now use seamless technology, and the process of hair transplantation is very easy. Leave immediately without surgery, without hospitalization, and you can go to work normally the next day after hair transplantation.