I have a strange rash on the back of my hand. It's between my fingers and on the side a little bit (like where a golfing glove would be, but I don't golf). It itches and I've tried lots of things around the house to get it to go away. It doesn't have dots or anything. Just dark red, almost purple sometimes. My skin is smoothe where it is, too, which is the oddest thing. Any ideas?