I haven't had the RSD in my hands for very long...but I do have a sort of delayed response to heat. I noticed this when I grabbed a plate of hot food and it wasn't until about 30 seconds after I was holding it that I realized it was burning my fingers (which were on the bottom of the plate). I also have a hard time judging temperature. Cold/cool anything I am obviously very sensitive too...but even with heat I just don't seem to feel the heat. My boyfriend brought me a bowl of "hot" water to rinse my hands after I tried cleaning out a pumpkin for halloween (not my smartest move ever btw) and even though I could see the steam coming off the water it felt cool to my hands. Very odd...you would think after how cold my hands were from the pumpkin that that the water would feel that much warmer to me...but it didn't.