Posted 7/21/2013 11:38 AM (GMT -6)
UC Guy, this is a type of urticarial, or hives. An immune system response (big surprise, I know!)
When I was on Pred/Entocort, I could put my arm on a table, and it the edge of the table happened to press my arm a bit I'd have a big red bruise. If I scratched myself, I'd get blood blisters. So that also could be part of it.