I had migraines in high school and a bit of college; I noticed a pattern when I was stressed, as soon as a test, or other thing I was freaking out about was over, my headaches would go away. Stress seems a huge player with migraines; mine were certainly not the worse I've heard of but I did spend many afternoons in bed with pillow over my head and lights out trying not to hurl.
Basically outgrew them, though not sure how that worked, perhaps my epiphany about stress helps me cut them off at the pass a lot more often.
