I am down to 3 mg of pred from 50mg, which has taken 2 years 3 months. Is it possible that the Pred is causing my difficulty in keeping a train of thought, and general brain fog at times? I do notice quite a difference from how I used to be. I would have thought the dose is quite low to still be affecting me that way. I am 70 so could it be that? Any help gratefull received.