When I acquired PN from a car accident (car landed on roof-top) I got a constant headache for 7 months, but I realized it was more like a Pressure rather than a headache, since I have also had headaches for most of my life. It was different, and it was driving me crazy. My neuro surgeon asked what I would like to have fixed first, my feet or my head. Well I choose my feet, but of course no one can have that fixed.
I did however start going to FIRST GENERATION WELLNESS CHIROPRACTOR, they are different than a regular chiropractor. After 2-months (3 times a week) he has almost eliminated that terrible "pressure" headache. I don't know if it's the adjustments, the herbals he has me on, or having him take me off meds. Living with PN and no meds is very hard, but he says it will take alot of time, since I was basically untreated for months.
IF you can find a first generation wellness chiropractor, it's worth the time and money.