Good question! Hopefully, as more people become aware of this new forum, you'll get good feedback. In the meantime, do as much research as you can and be sure to ask the doc regarding the possibility of RSD spreading.
It's a good sign that you responded to the nerve blocks, even if it was shortlived.
Check out the threads Jo*Mar posted above.
You are very smart to go for a second opinion.
I'm anxious to see what your doc has to say. Keep us informed k
Rae