I'm new here. I'm so glad to find other people that know what I'm talking about on this site. I try to tell my friends and co-workers that O.N. feels like being shot in the back of the head or else it's electrical zaps zapping all day in my head. And they look at me like I'm crazy. My O.N. was caused when I went on vacation to Yellowstone and I wore a baseball hat really, really, really tight for 10 days straight. I didn't feel like dealing with my thick hair every day, so I would put it up in a ball cap. My neurologist told me that I upset the Occipital nerves by doing this and I've been in pain for the last year. I'm thinking about accupuncture, but need to do more research on it. I'm getting really tired of going to the ER for the pain. The only thing that seems to help is muscle relaxers (Flexiril) and going on 3-4 mile walks in the evening. And I do not wear hats anymore!!!! I can not sleep on my back (with pressure on the back of my head). I can't wear turtle necks, heavy coats, nothing that will put pressure on the base of my skull or my neck.