ALgirl:
Mood swings are a well known and well documented side effect of chronic steroids usage. 'Roid rage is real, sometimes medical specialists see their discipline in exclusion to the whole body without addressing and dealing with the whole body effects.
So suggestions: go to your primary care provider and ask them to look at your complete medication. There might be meds that contribute or add to this problem. Try relaxation techniques that facilitate mind body healing -exercise, theraputic massages, music therapy, calming herbal teas etc. Second opinions can be equally theraputic.