Why do we have headaches and migraines?

     Headaches are probably the number one most frustrating illness there is. I myself have spent countless hours with doctors and specialist, not to mention thousands of dollars. I have been scanned head to toe and yet when I ask the one question that everyone ask's, I get a blank look like deer in the headlights.

 So what is the one question that doctors can never answer? What is causing the headache and how can I cure it? What I usually get is," We really don't know, but we can try this or that." Like I or anyone else want to be guinea pigs for their pharmaceutical. Are they afraid that if they told me the cause, that I might go out and find my own cure?