I haven't had CRPS for long but my pain definitely fluctuations both in type and intensity. The primary types of pain I experience are burning, crushing and stabbing. I experience all of these types in varying combinations and with varying intensity throughout each day.

I do have a consistent sort of baseline of pain which lies underneath any other symptoms I experience. I'm not sure how to describe this pain. Throbbing, achy soreness...but that doesn't really capture it. The point is, that pain is the only pain which is consistent; all the other types of pain I experience fluctuate greatly.