Chiari

   I need Help!
I started having something, that we believed to be seizures, four and a half years ago.
I have had, MRI's, EEG's, Blood tests... everything comes back normal!
I am in incredible pain all the time. I get really dizzy, especially in the mornings, At night
when I am lying in bed I can't sleep. My back, neck and head hurt so bad I feel Like
screaming. I am exhausted. I am normally a very optamistic person, but I am getting very
down about my whole situation.  
Someone recentlly suggested that I may have Chiari. I have never heard of it before.
Does anyone know anything about this.
Or have any other I deas for me.