I also have CRPS that I've had in my right foot for about 6 years now. I have an Abbott DRG implant, along with a NALU stimulator in my leg. Sometimes, nothing seems to work. My doctor recently scheduled me for a Lumbar sympathetic block to see if that might give me relief. I think we are trying to keep from going to a stronger med than the gabapentin and tramadol that I am currently taking (and I think I've developed a tolerance for it). Anyway, I was wondering if the steroid you are referring to is the same as the sympathetic block I am to get? I am hopeful the same thing does not happen to me. BTW, I am enrolled in the 3 weeks Mayo Comprehensive Pain Rehabilitation Center soon......and hoping it works!