I've never had nerve blocks done, and just stuck to medication and classical treatment for RSD in Belgium (calcitonin, bisphosphonates). As far as the blocks are concerned, none of the pain management doctors I went too wanted to give me a guarantee that the blocks would make me better. And I certainly didn't want to get worse. Blocks are INVASIVE procedures! I had read Dr. Hooshmand's take on the nerve blocks, if they work, then they work, if they don't, they'll make it worse. I didn't want to get worse and there was no guarantee. I wasn't about to become a guinea pig! No way.