Hi,
I hope that my experience may help someone looking for answers about this. Three years ago I developed what my doc called idiopathic (translates to "I have no idea") peripheral neuropathy when I described that when I got in bed at night, my lower legs itched wildly and felt like pins and needles when they heated up under the covers. The itch was UNDER the skin, there was no surface irritiation. My doc offered no help except to say that a lot of people have that and no one knows why. She offered me meds for Restless Leg Syndrome, which I declined. My sister is a nurse and when I mentioned it to her she told me that a patient of hers had been given folic acid for a lung issue, and it had also ended their itchy leg problem. I started taking folic acid and it REALLY helped. I could feel the itch start to subside about an hour after taking a 200 mg dose of folic acid.
That's not the end of my story. About 2 months ago I found out I have autoimmune thyroiditis (Hashimoto's - very common these days). When I found out I had an autoimmune disorder I wondered if something in my diet or environment was setting it off. I went on an exclusion diet for 5 weeks - no milk products, no eggs, meat, no wheat or grains at all. Basically I just ate fruits and vegetables. I felt completely different immediately. I was way less tired, the stiffness and joint aches after a hard bike ride went away completely (I though I was just getting old - not so!), my stomach didn't feel achy and overfull after I ate, and the itchy legs STOPPED! After 5 weeks I started testing adding foods back into my diet. When I got to wheat I got a big surprise. All those symptoms came back after just eating a couple of whole wheat rolls for dinner. Nothing else I added back had any perceivable effect. I have now been gluten-free for 2 months, and the itchy leg thing is COMPLETELY GONE.
I have no history of any kind of allergy, not even hay fever. If you are searching this forum for answers to a problem like mine, I urge you to test out the gluten thing.
I did not have chronic diahrrea or any other extreme symptoms of celiac, just the ones I described above. I have since read that antibodies to gluten often cause folic acid and B6 deficiency, which may be why the folic acid helped. Also autoimmune reaction sometimes attacks the peripheral nerves in the extremities and damages them. Good luck and I hope maybe I have helped you!