I don't want to sound like an asshole, but one from the world of chronic headaches, here is what I took away from the doctors in the last five years:

1. the brain is complicated and we don't know much about it 2. anything can trigger migraines 3. sometimes a trigger is not a trigger, but an ailment 4. some things may or may not cure migraines 5. life is full of hardships and hardships are not good for headaches

I have such a wonderful list of diagnosis that if it wouldn't be about the pain, I'd laugh my ass off about it.