My experience was both...one moment I was cold and stinging pain and in a blink of an eye it would be so hot I had to peel off clothing...people said oh it's hot flashes...no. I have not heard of hot flashes having a turnic feeling with it.
Since being on LDN, I mostly get cold CRPS. The hot is lurking but don't as consistantly. Hope this helps and hope you find help soon.