Feet sore and burning-candida related?

I have had burning feet for years now. Suddenly, they have become worse. I have had numerous tests and I am not showing any signs of vitamin defiencies except for Vit. D. I do not have diabetes. I have been to a foot dr. and they will run a nerve conduction test. I wonder if this is candida related though. I have candida lustanae(spell?) as tested from my dr. Could this be metal toxicity? or what? This feels like the skin more than the bones of my feet.I don`t know what to do about it. Anyone please have advice?