I was very concerned about taking decadron for the suppression test, but I figured I needed an answer and in spite of my apprehension I started the doses. By the 7th dose .5 every 6 hours for 48 hours, I was feeling great. No more aches, I felt I could breath better and I had more energy than I have had in a long time. It is now the 2nd day of no dose and I'm starting to get achy, neck and lower back pain, and breathing is OK. Why was I feeling so much better? Is this significant? Should I tell my Doctor?