Hair loss treatment might work. I recently had hair surgery in Chiang Mai and it is a one year program of hair treatment. The plan includes the surgery, PRP injections, red lighting therapy, hair spa (hair washing), and medications. A doctor at a hair clinic should be able to design and write up a long term treatment plan. Of course, there are no guarantees that immigration would accept it, but it’s worth a shot.
I’m on DTV soft power for physical therapy. I was approved with a 10 session (5 week) treatment plan.