My adrenal glands are not working

The test results came back today and my Adrenal glands are not working. This does explain the fatigue - or some of the fatigue that I am having. They have put me on Hydrocortisone. This isn't a high dose so I shouldn't have any bad side effects. Unfortunately there is no was to know how long I will have to be on this and if my Adrenal lands will start working again. It was due to the Prednisone that they stopped working.