I have had a headache for a month straight. I have been to the E.R. more than once. I have had CT scans and M.R.I.s I had a fusion done in my neck 8 years ago and was told that I had Chiari Malformation 1. I was told it us nothing to worry about. With my current headaches I have had more MRIs and CT scans. One hospital said I have a 6mm herniation. They called it Mild Chiari. I next hospital did a Brain MRI and a back MRI and specifically said no Chiari. I am very confused on what to do next..please advice. I live in Michigan