I'm an athlete, and I've had a small issue lately. A couple days ago, I came back from an hour-long run, and ended up with a decent size friction burn on the head of my penis from rubbing inside of the running shorts. I've never had one before, so I'm not sure about the healing process. The skin was raw at first, but now has a layer of "hard" skin over it, which I'm assuming is a scab. But its not really brown-ish in color like most scabs are--its more like a callous maybe. Is this normal? Is it something to worry about?