I agree with the weather change. My RSD has been in a "remission" state for a few years now but when the weather changes, either a high pressure or a low pressure, ect. I still feel it! It's just not that constant pain and burning I had before! I still get spotty "burning" sensations that last for a few minutes in my upper body but again not that constant everyday pain and burning I had when it was full~blown in my lower body!