I got a red dot on my face, right under my nose. I thought that it was a zit. But then it got huge and scabbed over. It started to heal and I got another weird zit on my nose and one on my lip, with in a couple of days. I have very sensitive skin, so I thought it was just a reaction to the triple anti biotic I was using and cortizone 10. Now this morning, I woke up with a larger, about the size of a pencil eraser, red dot on my shoulder, and it hurts. I have patches of dry skin on my arms and legs that are about the same size, and am pretty sure that was a patch of dry skin too. What could these be?