my mother had brain surgery in april this year for cerebral aneurysm. now she has a constant fear of head injury. panics at low flying birds or low hanging branches, anything she thinks might hurt her. so you are not alone. and some of the meds made her feel the same way. they have changed some of them and are still weaning her off of others. so i sympithize with your situation, i know it must me scary and unnerving. hope the med changes help you.

best of luck
recluse1