--we have discussed the newly emerging research that impaired glucose tolerance or pre-diabetes can result in neuropathy, especially painful small-fiber kinds, well before frank diabetes would be diagnosed by blood sugar results, and that a lot of doctors still don't know this and think neuropathy only results from well-established diabetes.
Here's one such thread (take a look at the references):
http://neurotalk.psychcentral.com/sh...1828#post21828