If you have been diagnosed with RSD and did not have an obvious original injury/surgery/wound site, how did the doctor diagnose you (besides physical exam)? Was it through thermography, x-ray?

I have many RSD sx and my lower right back and abdomen has been burning for almost a year. I have/had a physical job so trying to zero in on a particular injury for me/doctor is difficult. Two years ago my right shoulder and hand were very painful but now, not so much in last six months.

I don't know how familiar my neuro is with RSD but I want to 'suggest' he try something if he needs my guidance (ha!).

Thanks for your patience and sorry if I'm beating a dead horse.