I don't know why Neuro's as so arrogant but it's hard to find one who's not a butt heard.

In my opinion your overall health needs addressing if your not taking care of yourself. Unless it's something like b12 deficiency and shot's take care of it but it's not that easy for most. I hope it's an obvious one. The possibles are in the stickies. Some might be deficiencies like B12, alcohol, diabetic, cemicals, etc. But do yourself a favor if your not in tip top shape and eating correctly, getting enough sleep, keeping stress to a minimum, etc. do it these will help hopefully along with knowledge about PN and what to look for (causes). Good luck.