I am trying to gather information on Arnold Chiari. I am 35 years and had an MRI and the doctor had said that I had Arnold Chiari. I am assuming type 1. Then, a few days later, he said that based on my age group, the criteria is slightly different and the syndrome no longer applies. I am having the MRI because of a constant headache I have had since Feb 2007. It feels like pressure in my whole head - the pain does not originate from the back of my head area.
I could not find any info on the web on Arnold Chiari and specific age groups. Does anyone have any info on this? Or any advice for tracking down the cause of my headache.