Glucocorticoids reduce inflammation, but they can also cause liver cells to produce extra sugar. this could lead to high blood sugar levels and bring about steroid-produced

This could lead to high blood sugar levels and bring about steroid produced glucose. 
The use of steroids can cause significantly high blood sugar levels. These hormones decrease the effectiveness of insulin and make your liver dump more glucose into the bloodstream. Therefore the insulin amounts will need to be decreased as steroid levels decrease.