I'm so glad you found here, though I'm terribly sorry for your pain. I've also had the Stallate Ganglion Nerve Block done, with no success.... twice. Does your doctor have any idea what you might have?
You said you've been on all sorts of pain meds. One of the big things is to remember to take your meds consistantly so you maintain a constant level. Have they just tried narcotics, NSAIDs? Have they tried Cymbalta or Lyrica?
You mentioned NeuroStim Therapy. Are you talking the Spinal Cord Stimulator Unit, or SCSU? Or are you refering to something else? If you're refering to the SCSU I know there's alot of scary stories out there, but I'm one of the more positive ones, though I can only vouch for my trial.
You're not alone, that's the big thing to remember. I spent over 2 years going from doctor to doctor trying to find someone who could figure out what was wrong with me. MRI's showed nothing. Xrays showed nothing. They did a Neroulogical test and it showed that everything seemed to be fine. I was sent to one pain doctor through Workman's Comp, and not only did he treat me like an idiot but he said the most insulting thing; "I can't find anything wrong with you, there for you're fine."
I pray your doctor finds an answer for you soon as to what's going on, that they can give you the treatment you need to hopefully make it go away for good.
Originally injured 10/26/2007 - Initial diagnosis; Tendonitis
Spent next year seeing specialist after specialist; Bone, Muscle, Hand, Neurologist, Chriopractor, Physical Therapist...
Went through a battery of tests, multiple MRI's
11/16/09 I was finally diagnosed CRPS - Stage 2
Permanently disabled, on Percoset.
February 2011 successful SCSU trial
No surgeon willing to do my SCSU Implant