Do we really need skin?
I am allergic to sulfa drugs. How do I know this you might ask? I am covered in the worst rash I have ever had in my life. I itch so bad, that I have to wear socks on my hands at night so I don't scratch in my sleep. It's even on the bottoms of my feet! I knew there was a chance that I could have a reaction, but I hadn't had any problems up until now, so I thought I'd escaped it. Sigh.