I just wanted to post this as I think it has worked for me...
I have been on a gluten/wheat free diet for almost 3 weeks. I have seen my headaches all but dissapear! (I was a daily sufferer w/neck pain) I can say my neck pain hasn't really gotten all that better but I am functioning at a whole new level.
It is not really an "allergy" to gluten for me, I think maybe a sensitivity.
Anyway-just thought I would post-maybe it will help someone.