Lulu,
Lyn made some excellent suggestions, so I'll address another subject in your post, small fiber peripheral neuropathy. I happen to have that condition myself, so I'm very familiar with it. The neurologists that I've seen, can't figure out why I have it either, and the first one even diagnosed me with Parkinson's disease, because of the peripheral neuropathy and associated balance issues. I have no doubt that my peripheral neuropathy was caused by years of years of gluten damage to my brain and central nervous system. I managed to convince the last neurologist that examined me, that I don't have Parkinson's, but so far, none of the neurologists that I've seen, are even aware of the existence of a gluten connection with neurological issues. Shame on them.
I don't know if this would work for you, or if your doctor would even prescribe it, but I take a product called Metanx, which is a combination of megadoses of vitamins B-12, B-9, and B-6. The peripheral neuropathy was so bad in my lower legs and feet, that not only did I no longer have the ability to properly sense pain, heat, cold, etc., but my reflexes were shot, from my knees on down. After taking Metanx daily, for 8 or 9 months, my reflexes were pretty good again, and I could feel a pinprick almost anywhere. Since then, I haven't made much additional progress, so this may be as good as it will get, but at least it's better than it was. I still have basically the same risk that diabetics face, of not noticing injuries that might be serious enough to end up requiring amputation, but I try to remember to inspect my feet regularly, to make sure that everything seems to be in order. My hands are not perfect, but they're much better off than my feet, though my arms and hands do seem to fall asleep way more often than they should, (IOW, that numb, tingly feeling), but at least they usually "wake up" reasonably soon, if I shift positions. I just wish I had known about Metanx years ago, before the damage became permanent.
Interestingly, my doctor didn't have any qualms about prescribing Metanx, because he has been taking it himself, for years, to improve his memory, cognition, etc. He's well up in his 70s, and still practicing.
In case you're totally unfamiliar with the neurological effects of gluten, the following references describe the basics of the problem.
http://www.ncbi.nlm.nih.gov/pubmed/19845007
http://www.ncbi.nlm.nih.gov/pubmed/18825674
You have to register in order to read the full text of the following article, but it is an excellent reference, written by the leading researcher in this field, Dr. Hadjivassiliou. In case you don't want to register there, the second link below, should allow you to read the abstract, without registering:
http://jnnp.bmj.com/content/72/5/560.full
http://jnnp.bmj.com/content/72/5/560.extract
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