I went for the Stellate Ganglion Block which is supposes to stop the sympathetic nervous system (SNS)to stop misfiring (I think). It was used as a diagnostic tool to see if in fact I have RSD. It was done with light sedation. No pain! After the injection, 30 minutes later the color and temp changes were amazing.The reddish was pretty much gone and my fingers and left hand resumed to a natural color and the temperature went from ice cold to average. Amazing! So they feel that I do have RSD. They recommend a series of blocks as there is a cumulative effect. I go back to the pain management dr on Tuesday. I was a bit groggy when I was talking to him so I want more clarification. From what I recall only 1x a month he preforms injections on a Saturday otherwise it is on a Friday. Any one else every have a SGB for RSD or any other nerve pain? Of so, what were your results? How long did it take to see some long term results?