LittlePaw, it seems like CRPS to me. My leg responds to elevation too, but as soon as I get up and bear weight, the pain/swelling and burning start immediately. I was diagnosed almost six years ago. You definitely have key symptoms of CRPS. The blocks did wonders for me in the beginning with my right arm and hand, but now I don't respond to them. Only my leg responds (CRPS spread in 2014 due to knee surgery), and I'm hoping the ketamine helps too.