I am guessing its skin fungus but its not itchy and doesnt look like it at all in my opinion. Its not an std im pretty sure, my girlfried doesnt have one, she just had a skin fungus type thing that she caught when she was on a beach about 2 months before we get together, but she treated it and it was gone after weeks. This happened almost a year ago tho. Again im otherwise healthy and this didnt have any symptomps, im just a bit scares and very uncomfortable...