Can corticosteroids produce the effect of 'roid rage'?

My child is currently taking a steroid based inhaler as well as steroid from the singulair. She is asthmatic. She takes two 'puffs' of the inhaler (advair) in the morning and again at night. Also at night she takes one chewable singulair tablet. It has been about 4 or 5 weeks since we've started this regimen. I have noticed that she went from being a mild mannered little angel to a screaming demon. She is more aggressive, in as much as hitting, pushing, and yelling at her sister and even myself. The difference in her behavior is completely obvious. She went from being a fairly easy going child to being a high strung and aggressive child. Could this be caused by this medicine? She literally will 'attack' you if you don't comply with her requests, she's NEVER done things like that. I am unsure what to do. I think maybe she's OVER medicated and it agitates her. Can anybody tell me what may cause this Jeckyl and Hyde behavior?