Patient :I have a small white and yellow bump on the shaft of my penis. It is a little red around it. I've had this once before and it went away on its own in a couple of days. It doesn't hurt at all unless i put pressure on it. I do not think it is a STD or STI because i have only had one sexual partner and they are tested and have no STD's or STI's. I'm just trying to figure out how to stop it from coming back and what it is.
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