Yo I had something that looked exactly like that a few years back after going into a Goodwill and getting halooween stuff. It was all over exactly like your pics, so I went to the doctor and he said its's just a skin fungus. I'm almost positive it's the same as yours, and he perscribed me some cream called ketokanazole, (prob spelled it wrong), but it cleared up in like two weeks with no scars or anything. But just go to the doctor and he'll let you know whats up