My RSD leg gets very cold. When I am in the worse pain I get cold chills. I wear a blanket in the living room all year long for heat and to keep the animals from loving on my leg. I have to remind them they forget. If I can't handle it anymore I go to bed and wrap the comforter around me. I can't wear socks as it increases my pain level. But it works with the comforter wrap. I usually fall asleep and wake up better. I too have the hot and cold going on. So the comforter is on and off as I adjust to the tenperartures. The leg is always cold.