I've had some odd sensations on my face at times, particularly my left cheek feeling hot and sore. My CRPS is predominantly on the left side of my body, so I worried that it was spread, but I've only had it very rarely a few times, and it hasn't progressed to the constant pain of normal CRPS areas, so I've tried to ignore it
I get some odd little nervy sensations in all sorts of places, and they aren't spread. I read that because the CRPS is sending and receiving weird signals throughout your nerves and brain, that those little odd pains or numbness or stabs or whatever are just kind of nerves misfiring rather than true spread. It's only if it becomes regular in one place, and very often, that you should start to suspect a new area of concern...
Good luck and try to smile wherever possible! Hope tomorrow is better than today
Bram.