Prednisone can cause awful psychological changes. I've been on 80 for 2 months and am beginning to taper it off by 5 mg every 5 days. It saved my life also (giant cell arteritis) but the side effects can last up to a year after the drug is discontinued.
The after effects are as bad as the disease but I have to believe they will subside or I couldn't keep going. Try to hang in there.
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