When I had RSD I had really awful bone pain--I think that deep, cold bone ache was about the worst sensation I had. I remember that heat seemed to help for me--either heating pads or submersing in a nice warm bath with Epsom salt. I don't really remember any meds that worked extremely well for that type of pain but biofeedback may have helped a little, as well as the TENS unit. When I would get really awful pain I would also try to concentrate more on the limb that didn't hurt instead, or another part of my body that felt "normal." I'm sorry you're feeling that kind of pain.