Hi Clemens,Welcome to Healing Well! Sorry to hear you're struggling with symptoms. There is no doubt that GERD is made worse by stress. It's pretty commonly accepted as a trigger for GERD.
That said, it sounds as if you're trying to prove that GERD is actually a result of stress, and minus stress you wouldn't have developed the problem in the first place. I'm not sure how that is proven. I did a little looking around the internet, and here's one resource I found:
www.cns.med.ucla.edu/Articles/PatientArticleFl99GERD.htmPerhaps somebody else will have knowledge of this connection. I'm just not sure. I wish you the very best of luck in finding answers and getting your medications covered!
Best wishes,
Denise