Pred definitely makes for short-tempers. Also rapidly changing moods--snap at someone, then cry, then depression, then more anger. Short-term memory loss is also a famous side effect of pred. It also happens with chronic illness.
A neuropsychiatrist at JHU once explained to me how the brain chemicals get depleted with chronic illness. At the time I was experiencing cognitive issues (eg memory loss, difficulty finding words) and thought I had a brain disorder. It was "just" Wegs, depression and the residual effects of pred.
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