So we're your feet hot to the touch? How they discribed PN, they said a sensation of hot, but I realized later that this is real hot!
I just did a experiment with my Exergen infrared thermometer, my feet are real cold right now, the Ambian temp in the room is about 76 deg. The soles of feet measured 69 degrees, my palms are 84 degrees, and I am running a temperature 99.5 deg. My feet will heat up and get painful, then cool off and be cold to the touch.
My Rheumy thinks it is the micro capilaries misfiring, cutting off the blood flow, then when they heat up it has to much blood flow to the feet, she thinks it is a part of the neurological misfiring from SLE Lupus.
Hope they are helping you out with it!