I know how you feel Lynn, my legs get more tingling and painfull every day, I have been told I have idiopthic SFPN and I have just got to live with it and all that can be done now for me is treat the pain and treat anything else as it comes. You just have to try and stay positive and take one day at a time. I wish you all the best but you might not ever find a cause they can not tell me what is causing mine so I hope they find a cause for yours. You are at the right place everyone here are very helpful.