Prednisone
"I'm taking Prednisone as follow up to being hospitalized for pneumonia a couple of weeks ago. I was also taking an antibiotic, Clindamycin, when I developed hives. I immediately thought it was the Clindamycin because I'm allergic to Neosporin (Neomycin) & stopped taking it 4 days ago. I waited for the rash to clear, but it hasn't. Then I thought, "why do I have an allergic reaction to something when I'm taking a steroid?" Bingo! Looked up side effects of Prednisone and there is was: rare reaction of hives. Looked it up just right after I took my 2nd half-tablet. No more Prednisone for me!"