We Cushies have to go to the emergency room when we face adrenal insufficiency and adrenal crisis. I'll post some additional links (here), (here), and (here).
Tip #1: Stay focused on what you need
Dehydration, infections, and the inability to keep down oral cortisol replacement cause Cushies to take the dreaded drive to an emergency room. So before you get there, psyche yourself up on the ride over. You better mean business, or you won't get the help you need if you don't push for it.