iam in the same boat as you......i have dizzyness all the time....been tested alot....heart etc.....everything comes back ok.....endoscope shows hiatus hernia....iam pretty sure its that that causing me constant problems.....it allows acid to travel to your nerves....the vagus nerve i heard could be the cause....i get so scared because it been a year now....iam been on prolsec....helped at first.....then nexuim...helped a bit...now previcid....helps a bit.....iam always thinking its a brain tumor or cancer of pancreas etc....i never got a head scan so maybe i should get that.....i barely make it throgh my days sometimes....and iam not enjoying my life.....cant go on a vacation cause i fell so crappy......i need help