I am scared to go outside, let alone go food shopping, or anything away from my house (comfort zone). I am trying to manage my anxiety at the same time, but these head pains (pressure in the back of my head) is making it 10 times harder. I am always scared, and fearful of something happening to me in front of other people, and I am scared to drive too now.
I'm sorry that you're having such a hard time. This probably doesn't help you too much, but I have the same fears. I've passed out several times and it seems like I always manage to get hurt when I do it, i.e. hitting my head on something, falling on corners or something sharp, etc... The worse my headaches get, the more afraid I become. I haven't even learned how to drive because I'm terrified that I'll pass out behind the wheel.
You said that you see a chiropractor; have you ever tried massage therapy, accupuncture or accupressure?