I have weird neuropathy that is triggered by meds. I too was given Flagyl for DV but I had such a severe neuropathy flare up I refused to continue taking it. I think I just took the Cipro or was given it instead but my DV was probably not as bad as yours. I am not sure but I suspect my neuropathy was initially caused by taking a calcium channel blocker for blood pressure and eating a bunch grapefruit along with it, grapefruit inhibits a liver enzyme that metabolizes meds and that is when it started and was the worst. Several meds trigger mine, notably inhalers, but for some reason I have gotten a lot less sensitive over the past couple of years. I hope that happens to you too.