It all started because of a commitment I made when I was too young to understand what I was getting myself into. My mother had headaches. Not "throbbing in the temples" headaches, but gut-wrenching, totally incapacitating, "rip the carpet out with your bare hands" headaches. Migraine, cluster headache, trigeminal neuralgia-whatever the flavor, they were really bad. She saw practically every specialist in the country. They gave her ergotamine injections until her fingers turned blue, narcotics powerful enough to stop a charging elephant, and dozens of other medications, many of which were experimental at the time. Nothing worked.