Hi there - I am a fellow 'hot footer'. I've had my condition since being a teenager over about 35 years ago. I do not believe it is insulin-resistance related,I believe I got nerve damage (yes - neuropathy) somehow through something I ate, or chemicals - internally or externally I will never know. I've had my feet looked at by a diabetes nurse and two podiatrists - one in each of my countries, since becoming a diabetic, because it was only then that I realised my hot feet condition is actually nerve damage/neuropathy. My most recent podiatrist said my nerve damage is not peripheral, but deep in the foot, and therefore not diabetes related, but that elevated blood glucose levels would certainly not make it any better. (The more elevated my BG - the worse is what I now realise is pain! Who knew?!) Also it is worse at night, says my latest podiatrist, due to swelling in the feet irritating the damaged nerves and making the pain worse. (That pretty much explains it!)
This condition has certainly been a curse for me, but I am hugely relieved I now know why I have been sticking my feet outside of the covers, and wrapping my feet in ice packs at night sometimes in order to go to sleep (which provides a lot of relief) for most of my life. I have also gotten relief from walking barefoot in the snow and ice! And I cannot imagine how many bottles of skin cream I have rubbed into my over-dry feet. Body Shop does some great foot cooling sprays and creams for sure. I own at least three pairs of massage sandals at any given time and wear them as often as I can. Deep foot massages are also a blessing - but you really need to have someone who takes orders from you, or knows what they are doing for it to be pain relieving. Those things, by the way, are some of the recommendations for dealing with nerve pain/neuropathy of the feet, when the pain is expressed as heat. (not the walking in snow and ice though! Just in case you get frost bite.) The only way of dealing with it is by your own pain relief methods (such as ice packs), which is what I do, or take medication. Better blood glucose control, and not being so body-heavy provides a certain amount of relief as well (less pressure and irritation to the damaged nerves). And for a good diagnosis and discussion about treatment that is right for you - yes - first the doctor, who will refer you to a podiatrist. (And the podiatrist may refer you back to your doctor for the pain relief medication if that is what you would like to try.) Good luck with this!