@ddljohn-- I agree with this.
I had to use cortisone twice in the past because of a herniated disc in my back. There was too much inflammation and pain and I couldn't walk.
The first time I used cortisone, I had high blood sugar constantly for almost three weeks. My blood sugar went back to normal after that. But the second time I had to use cortisone, I only had high blood sugar for 48 hours. So every cortisone out there is not the same. But I agree that cortisone treatment in people with diabetes or diabetes in their family needs to be carried out under close supervision.