My son has been in the mid 300`s-500`s since New Year weekend from his asthma meds (got a cold and had to start the inhaled steroid- ventalin wasn`t cutting it) I correct and he`s fine for a while, then it goes back up. I feel so bad for him walking around so high, and getting shots in the middle of the night. But it looks like he`ll be on the Flovent for at least another 2wks.
This is a well-known effect. You have to up the basal insulin until you're not having to correct all the time.
My daughter is on flovent 2x daily, but we don't see any increase in her sugars. When she had bronchitis over Thanksgiving and Christmas, her inhaler made her sugars go up and stay up, just like your son's. We had to increase basals by 150%, until it cleared up.
On the CWD parents list, one parent ups the basal to 275% of the normal for her child on predisone. Steriods make the body really resisitent to insulin.
That really is a double whammy. One med perpetuates the other disease. I am sorry you have to deal with both. That is hard.