hi,

i was in Thailand for a physiotherapy internship.
i learn that to be a PT in Thailand , everybody (even Thai ppl) has to pass an exam (writing, practice ...). This exam is only in Thai.
So if you can speak, read and write Thai, no problem but if you don't there is no chance that u can get a job there!
hope i could help, for more information you could maybe contact the assiociation of physiotherapist in Thailand.