I have not been diagnosed with Chiari, however, I was diagnosed with a Basilar Invagination Oct.2017 and saw a Neurologist Jan 2018. I have had headaches every since I can remember, they just have been getting worse over the years until they finally got to the point I was maxed out on Topamax dosage and still having such severe migraines I couldn’t stand it with neck pain, sharp pains that would feel like someone knocked me upside the back of the head with a 2x4, pressure behind my eyes, blurry vision, pounding pressure in my eyes, back of my head, neck down my back that gets worse if I cough, sneeze, bear down for a bowel movement or lay in certain positions, twitches in my eye and mouth, tremors in my hand and leg at times, numbness and tingling in my legs like pins and needles, my head feeling heavy, but now I had 4 seizures Friday? Can they be related at all?? Also can they diagnose Chiari without a sitting/standing MRI?