I have had a chronic headache for over a year now. Every day, all day, without stopping. I have been to a headache clinic including two hospital stays. I have also been on migraine medications and no change. I have even had three spinal taps. I have officailly been diagnosed with chronic migraines and have even tried botox. Still no change. It did seem to begin from hitting my head on a large wooden beam, but I stayed conscious and got a little dizzy and nauseated. I have brought that up to countless doctors but they all think it is completely unrelated. My question is from this information what do you think is the cause?