Silver Old Penis What Is This And Is It Dangerous Or Not?

What is this and is it dangerous or not? - silver old penis

OK if it sounds confusing, but I'm worried, I'm sorry. and I'm 17 years old and seems to have a place 1 inch on my penis, which have a white powder, not the rind or skin or something a little white and coming and going to be. and I think it increases with cold weather, even went to the doctor, but was not as clear then as I said it's nothing that I do not think that's exactly what I want to know what it is and it is dangerous or not. is determined by the way your money is not as soft, white powder. So please give me some advice, if you have any.