Could one of the wise souls on this thread clarify for me why I get pins and needles and hot feet only at night? I have a non diabetic sensory PN triggered by long term B12 deificiency due to autoimmune disorder (intrinsic factor). In fact my feet are cold all days and an hour or two after going to sleep, they catch fire. I recently discovered cold socks (gel pad based) which have been a life saver or I will not be sleeping very much. Amazingly, I am fine once I am back on my feet. I have to assume it has something to do with vertical vs. horizonal orientation of the body. Wish I could sleep vertically! help!!!!