Help please am confused maybe because I'm clocking on. Am thinking applying for DTV on medical grounds. I have been told I need letter from thai doctor after appointment, does that mean I fly from UK get letter then fly back to apply? I have heart disease and have evidence letter from my UK consultant. As I'm a widower my plan was to visit various hospitals and enter a treatment plan based on cost. I would be flying home after stays and coming back. Sorry if I'm boring you but not sure what do or apply for.