I know alot of us have SFN and many of the posts are about diabetes or pre-diabetes . Supposedly mine is post infectious after viral infection. But I never get any response about any of my issues. People will ask vit. levels but when I mentioned about elevated WBC in crebral spinal fluid after the first year of being sick, no in put. Sorry I sound so mean and angry, but I guess I am, as there has not been any relief from this hell I live for the past 10 yrs. Cbar