Ahh, thank you very much for the link! I wasn't aware of that site.

I received a nasty crack on the head when I was 12 - literally a crack - from an impact right above one of my eyes. Based on what I've read so far on those links it could explain some things for me. Perhaps the reason trying to treat my PTSD has been unsuccessful is because it's totally missing this piece of the puzzle.

I'll need to keep digging around there. Thanks again!