Based on your post I think you know the answer to your own question and it is the same as I would do: you need to find another doctor. A doctor who is not well informed about RSD, doesn't believe it exists, and isn't willing to listen to their patient about their needs and limitations is NOT a good doctor. Plain and simple and I wouldn't trust my care to them and I don't think that you should either. Find another doctor. Take care and good luck.