Its definitely a corticosteroid you're talking about. Essentially, its an analog of the hormone 'Cortisol'... which is the enemy of bodybuilders. Getting it by a patch should save you from some of the sides you'd get if you were taking the medication orally: bloat, mood-swings, depressed immune system, muscle catabolism, etc.
I'm currently on 15mg of Prednisone ED to resolve a pulmonary embolism(blood clot)that developed in my Lung following a Kidney biopsy I had in early February. Prednisone is a nasty(oral)corticosteroid... just knowing the potential side effects, I can't wait to bin it. I'll probably be able to go off of it this weekend. At 15mg ED, I've been fortunate enough and suffered FEW sides: mood swings is about it. My physique is nice and hard... no bloat to report yet. I've also noticed an increase in energy while on it.