Craig,

My son had an MRI when he was 6, also due to constant headaches. It was an "open" MRI, and I was allowed to be in the room while he was scanned. He actually fell asleep during the scan! The result: the headaches were due to stress. At 6 years old. Due mostly to his teacher and schoolwork. Hooray for modern education. <img src="/images/graemlins/crazy.gif" alt="" /> The neurologist wanted to put him on beta blockers, but we said no way. He still occasionally gets headaches, maybe once a month or so. He manages his stress by playing sports and pummeling his little brother. <img src="/images/graemlins/wink.gif" alt="" /> Good luck, I'm sure you'll do fine.