Hey there! Sorry your wife is having to deal with this monster! Bracing or immobilizing an area that has CRPS is never a good idea...it can make things worse for her. When I hurt my right hand, the drs misdiagnosed me and braced it several times...I ended up with RSD/CRPS in it. Not saying the braces caused it, but it definitely made things worse. Not sure what she can do to alleviate some of her pain, I had stellate ganglion nerve blocks and then two spinal cord stimulators to help me. Definitely do not use ice as that could cause spread. Ice is bad for RSD/CRPS!

Does she have CRPS in her hand or just her arm? If she doesn't have it in her hand and the pain is radiating, she needs to have other things ruled out like a nerve problem in her cervical spine. If she hasn't done that already.

I am sure some others will chime in soon with some advice. I hope she finds relief soon!

Nanc