I ask this because I had a tumor growing from my left adrenal gland for many, many years which did affect my stress responses but, although I was a student nurse/Nurse during this time I didn’t experience panic attacks or hyteria, in fact I would say at times I failed to experience any stress in sittuations where I should have. I had assumed that panic attacks and hysteria were adrenaline driven and so therefore I should have been experiencing these things.