Can you tell us the name of the heating pad you describe, such as a link to it on Amazon?
I actually have trouble with both heat and cold, so a "normal" heating pad, which touches my feet, wouldn't work. When anything touches my feet, even shoes and socks, the slight pressure is interpreted as burning, rather than pressure. My feet actually can turn red, and feel hot (this is called erythromelagia). Then, when I take off the socks, I go through a short lived comfortable stage, and then into feeling freezing cold (and cold to the touch). Something such as a tepid foot bath would help, but it's very inconvenient.
BTW, I have small fiber idiopathic PN, proven by NCS and skin biopsy.
Anybody else out there have the same problem, and hopefully, suggestions?
Thanks in advance.