Hi and welcome to the Chiari forum.
Well once u have chiari u will always have it, surgery is not a cure, but a means to slow progression and restore CSF flow.
It is possible that u have scar tissue or another issue going on, when was ur last MRI and neuro exam?
"selma"
You arent crazy. I am 4 months post op and most of my symptoms are still here. Actually my headaches are just as bad and seem to be more frequent than before. I guess we will never know how chiari works?