Well, here is what I think: I have cold RSD, my hands rarely go hot/ swell, they are usually purple and cold. My feet are cold/ purple at times, and you know what makes them go hot?! Getting the blood flowing~ whether it is wearing the compression stockings for a while, soaking them in warm water or walking/ using my feet.
Strange. My conclusion is that I have cold RSD. No doctor has told me what type I have got, but they always write on the records that my RSD skin is cold to the touch (and every time I have gone it has been... strange!), so I guess I'll assume "cold"... not sure if it makes much of a difference? Unless it has something to do with what stage of RSD I am in...