If you are a long-term steroid user, it's important to have your blood sugar (glucose) level checked regularly. Use of high-dose steroids has been associated with the development of glucose intolerance (a precursor to diabetes).
It's estimated that blood glucose increases by 10 to 20 percent in steroid users. In some cases, "steroid diabetes" may develop, but the condition normally disappears when steroids are stopped.
If you already have diabetes, corticosteroids can adversely affect your blood glucose control, and your doctor may need to modify your treatment regimen.