When I was diagnosed, I was throwing up all the time and had lost 30 pounds. My initial dose of Cortef was 60mg. I stayed on that for several weeks and then slowly weaned down to 30 (I am on 17.5 now). The doctor should up the Cortef now as your son is obviously having an Addison's crisis. He could be dead if everyone waits for all the tests to come in! I was started on the 60mg Cortef right away. When I was stable, they did the pituitary scan. The bottom line was that I had panhypopituitarism, but no tumors. Make sure they check your son's thyroid and growth hormone levels as well. The important thing now is to get him stabilized and stop the vomiting. If your endo won't listen to you, find one who will. (Obviously, I'm not a doctor. This is just my opinion.)