True vertigo (not dizziness) is an inner ear disorder that sometimes resolves on its own , but can be persistent. I have had it so bad I could not walk ( mine was totally unrelated to CRPS). In the US some docs and some physical therapists are trained in a maneuver ( don't remember what its called) to reset the little crystals of the inner ear. It is a simple movement of your head in a purposeful way that can correct the vertigo in minutes. For bad cases. Meclizine can be prescribed by a doc or nurse practitioner. Hope you feel better sooon!