It was just brought to my attention that one of our members with extensive CRPS/RSD has been in touch with a neurosurgeon at Columbia University, who investigated using MCS but reported back that "MCS works best with unilateral pain," and declined to proceed. (I gather there are as of yet unpublished reports of poor results in patients with generalized CRPS/RSD.)

On hearing this, I double checked Motor cortex electrical stimulation applied to patients with complex regional pain syndrome, Velasco F, et al, Pain 2009, and yes, although not specifically commented on by the authors, when you go through the individual case histories of the study participants, their CRPS was indeed confined to a single upper-extremity: possibly including including the shoulder.

I apologize for not catching this, as well for raising hopes that do not appear to be supported by all of the evidence, even if some of it is not yet published.

Hopefully, there will be better results with tDCS for patients with generalized CRPS, but what little I've heard so far on that score isn't all that promising.

Mike