Hi Mom0405, my DS4 was recently on a 3 week oral steroid course and during those three weeks his behaviour really changed! He is usually rather quiet and reserved and his teacher described him as very "talkative" and "bouncy" during this time! His steroid (which he had with another medicine) was to treat a stomach problem as he was struggling to absorb his food. I am not sure what steroids you have used, but in our experience they can have massive side effects (but in our case it was worth continuing and was only for a short period).
Also, asthma is something entirely different,and needs to be taken very seriously. Is your family doctor helpful, if so it might be worth going back to them and reviewing all your options?
Sorry I can't be more help.
XX
