So, I'm 6 weeks post op and having first Chiari headaches since surgery , I've had 3 ..today's is a really bad one. I've put in a call to my NS. I started PT this week. It's very intricate PT, Only moving my head about an inch in different directions, at first I thought this was the cause of the headaches, now I'm not so sure, as I was fine yesterday and now I'm hit again with a whopper. I also had an arachnoid cyst drained..which causes me to worry, if the cyst refills, Dr. K will want to put in a shunt. Does anyone have any opinion on these issues? Thanks..Michele