David, I was going to say diabetes like mentioned, which I have, and have the same numb cold feeling in the legs you describe, like having frostbite. I also have anemia, which makes you feel cold too.
Ken, after holding off so long...3 years almost, I'm finally going to see a pain specialist tomorrow that I was referred to see by my RO team. Will probably prescribe Neurontin, and see what is new with treatments.