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.
The ask:thailand community, consisting of multiple Q/A groups with over 100,000 members, powers this platform. It is not an official government resource. Our members actively contribute to this resource, and while we strive for accuracy, we cannot guarantee its complete reliability. Assistance to travelers is provided as a community service.