Laura,
Good and interesting information. Though fainting seems scary. I also suspect something wrong in that area when I hit my head. My Neurologist also thinks occipital Neuralgia or something in those nerves. I will be going after all kinds of fun shots for the neck

and see if anything works. Right now cervical collar (prescribed by doctor) seems to be helping and after 3 years I have some hope now? Wait to be seen......
Cheers!