Leeannea, have you been prescribe the drug because you're in a crisis/flaring situation? If that's the case, the increase in inflamation could be the trigger.
I have a couple of stubborn patches of exzema (so nothing like your condition!), but when I have to use the steroid cream on those for a few days, I sometimes find when they get worse before getting better.
Leeannea, I'm not suggesting you have been inaccurately diagnosed, because I don't know anything about you, but a couple of years into treatment for psoriatic arthritis, including Methotrexate et al, a business colleague of mine was tested for Coeliac Disease, which actually transpired to be the underlying cause of his skin problems.
As I say, I am absolutely not suggesting you are the same, but with another auto-immune condition already in play, I hope you've been tested for Coeliac and the other raft of AI conditions?