I have a blue scab thing on my back?
So after I got out of the shower I noticed this thing on my lower back. Slightly smaller than a penny. It's just like a little chunk of skin gone, not really like a scab I guess because it isn't flaky. I have no idea when or how I got it, but part of it looks BLUE?! I'm concerned I have a weird rare flesh eating virus but maybe I've just been watching too much Grey's Anatomy. It hurts a little like any cut would but not horribly. I tried rubbing the blue off like maybe it was marker or fuzz from a shirt but nope. It's my skin. And it looks nasty.