Hi,
I have had both upper and lower body CRPS for over a decade and I had come to the conclusion that by this time my pain would be sympathetically independent pain.It seems I was wrong
Fortunately I have a very pro-active pain management physician who will continue treating symptoms for as long as I have them so I still have Stellate Ganglion and Brachial plexus blocks for my upper body and Lumber Sympathetic Blocks for my lower body.
The results do vary from time to time but I don't believe I have ever had a block which has not given me some pain relief to some extent.
I guess it comes back to expectations as to whether you would be happy for a good but not terrific outcome?