This thing is on my penis from 3 to 4 years, i start noticing it 2 years before and try to peal it, after that it get increase a little in size now if make uncomfortable my wife during sex there no any other mark or spot anywhere near my penis i don't know what it is now a little worry after reading some article on different websites i feel bit shame going to doctor for this and also don't know which type of doctor will treat this type of problem. and some time i fell a little pin felling on it.
I want to mention that there is no discharge from this any fluied and when i tuch it it,s hard skin.
go to a doctor