There are food triggers too.

Gluten--going gluten free may help

Nightshade family (potatoes/tomatoes/peppers)
http://www.deliciousorganics.com/Con...nightshade.htm
I get burning feet from potatoes. I can eat fresh tomatoes but some sauces set me off.

Monosodium glutamate is a neuro excitatory chemical. It stimulates NMDA pain receptors. It is very common and in many processed foods.

Histamine releasing foods:
This is one list...if you Google it there are others:
http://www.urticaria.thunderworksinc...whistamine.htm

If you have genetic errors in metabolism... B12, folic acid may be not activated for use in your body. There are DNA tests now for this.
Or if you are low in thiamine, take drugs that deplete it or have errors in dehydrogenase enzymes, then taking extra or the new version benfotiamine may help. (Doctors don't know this as a rule).

If you took drugs (statins and some antibiotics) in the past, you may have damaged mitochondria, leading to damaged nerves.
Supplements for this are acetyl carnitine, CoQ-10, biotin, and r-lipoic acid. Doctors don't know this commonly either, but it is in the research.

The research into mitochondrial failure is just beginning. It is here many people are found with chronic illness. We will see much more of this in the near future.
http://neurotalk.psychcentral.com/sh...t=mitochondria