My neuro ran a blood test for gluten sensitivity because I brought in an article by a GI that told what the test was. It came back negative but she only ran part of the tests. I'm going to talk to a GI this week about it just to rule it out. My wife has a friend who had PN symptoms for 8 years even spent a week at the Mayo clinic but they couldn't figure out what was wrong. Turns out she is gluten intolerant. All symptoms went away after about 4 weeks gluten free. I don't think that is my problem but I'll go talk to the GI just to make sure.