I am definitely super sensitive to the cold and as for the heat I tend to not feel it unless it is REALLY warm. BUT...I also sweat a lot now which I never used to do before and this can happen even when I am cold...very odd. I know it's the RSD messing with me...but I make sure that I always have layers (at least something with long sleeves), always have on long pants, keep a scarf and gloves in my walker, wear socks whenever I leave the house (on the off chance a stray breeze or blast of AC hits my RSD ankle I want protection)...it's nuts. I know people have got to think I am a thundering looney when they see me all layered up like that when it's 70+ degrees outside...but what do I care? I'm just happy any time I am able to just leave the house!