Dealing,
I also just developed RSD in my back after having a SCS revision surgery about six weeks ago. My physical therapist suggested I ask my doc for a Rx for the moist heating pads, as the big ones can be expensive. Many people are able to get it paid for through their insurance companies. Please let me know if you find anything that works for you, as I am snuggled with heating pads all day long.
Wishing you the best!