Originally Posted by mrsD

Have your doctor order a HbA1C ...this will show long term trends in blood sugar levels, and is more predictive of long term elevations than single readings.

If the A1C is normal for your age, I wouldn't worry yet.

All corticosteroids raise blood sugar to some extent. So do infection and stress. Typically treatment is not ordered for temporary steroid blood sugar increase.
You can moderate your diet some to account for this. Avoid sweets, and eat modest portions, including good amounts of protein and veggies during this time.

If your HbA1C starts to rise, then that would be more problematic.