With RSD, I've found that the pain comes into my dreams in the form of troublesome sleep or frightening dream experiences. Today, for example, I was being chased. Interestingly, though, the pain doesn't always get a part in my dreams. I remember waking up from my nap wondering why my foot hurt for the first few seconds. Then, my head cleared and I knew. I just thought I should get this down on virtual paper before the memory evades me.