NYM,

Geez, let's hope if it's something more rare it at least has a more definitive treatment. I'm not arguing with your doctor of course but there are movement disorders associated with CRPS. We actually have a member whose primary symptoms are motor related.

Movement disorders in complex regional pain syndrome. - PubMed - NCBI

That said, you know I am a huge fan of an adequate workup. It is always good to have information. I don't know/remember how you ended up with CRPS or what was done to rule out other problems. Nerve conduction studies and imaging can be quite helpful. A fresh set of eyes on your case from a new perspective could make a difference for you.

I'm with Sophie on the ketamine cream. My topical has it and it's less than $200.

I hope that taking this new direction gives you information that is helpful. Turning over a few more stones is not such a bad idea. Please let us know what happens. It would be wonderful if this opens another door to healing.