I have Rheumatoid Arthritis and have just started a 5 day course of prednisilone (60mg per day for 5 days). My blood sugar has jumped to 24.5, but my arthritis has improved immediately. I am on Lantus 28units perday, Sitagliptin 1 a day and Metformin 2 grammes per day in 2 doses.I am very...