Hi Yellow,
I understand exactly how you feel. I recently saw an RSD specialist and he confirmed that my RSD has spread to the entire left side. The combination of Lyrica and Cymbalta is managing the burning well. I still am aware of it but it's doable. But now I have this cold and crushing feeling like my leg and arm are in a vise being squeezed.
RSD is awful enough in a localized area but spreading to other areas really sucks.
So sorry you're going through this. I wish I could wave a magic wand and make all our suffering disappear...