My moom face has gone down quite a bit (I'm on 12.5 mg right now) but I did gain about 20 lbs on prednisone. (that's after losing about 10 lbs when I first got sick.) Unfortunately, the extra weight is in that lower abdomen area, and it's really hard to lose it there, particularly at my age. What's even more crazy is that prednisone makes me (and others too, I know) so hungry! But, the medication makes a world of different for lots of people with lupus. It's not something anyone wants to be on for very long, but when we need, we really need it. Exercise when you can; watch what you eat and the adverse affects like weight gain may not be so bad. I wish you well!
"If you trust Google more than you trust your doctor than maybe it's time to switch doctors."