Wow! That is definitely similar to my story. Mine started with a tingle in my left calf. It stayed that way for a few months and then I noticed I had the same sensation in my right calf. That's when I went to the doctor and they ran my blood tests and such. Everything came back "normal". I have copies of all my labs and they do fall in the normal range, however I have researched those results individually and come up with different thoughts on that. The only one that really stood out to my was that my thyroid is a little high. I am also anemic but she said that wouldn't cause these symptoms. So they sent me to a neurologist and he did all the normal testing in the office including MRI of brain and such. All normal. I have an appointment with him in 11 days to see what's new. Over the past summer 2012 the tingling had spread and I felt it in both legs from ankle to knee and sometimes in my hands. Just these last few months it has become so uncomfortable for me to be on my feet. This used to just mainly bother me at rest or at night when trying to fall asleep. Now it hurts to stand for more than a few minutes and the feeling I get of numbness and burn makes me feel like I will lose my balance...does this sound familiar? I also have other symptoms like sensitivity to light, brain fog, muscle twitches, tremors on occassion. I really appreciate you responding to my questions. Have you notice that your PN is getting worse still or did it kind of level off at some point? I'm at the point now that it is causing me so much stress and anxiety that I don't even want to leave my house or do anything. It's terrible.