I have non-diabetic neuropathy also. My neurologist says it's from long-time alcohol abuse (currently in recovery). There here well could be a vascular/arterial component to it also. Have u have Doppler ultrasounds done on your legs? Worth looking into. I am a nurse and do a lot of research on my own. You have to be your own advocate. Good luck. U shouldn't have to suffer. Referrals to neurologist and/or vascular (vein) specialists may be helpful also.