<s>[INST] Hi. I noticed a small abrasion on tip of my penis the very next morning I had rough sex with my girlfriend and it turned two days later into one single white-headed pimple. I have no pain and there is no discharge of any unusual fluid or any smell. what could it be? how to treat it? Thank You [/INST] It could very well be an abrasion. You dont need to do anything. Just give it rest and keep it clean. It will heal in a weeks time. But try and practice safe methods to avoid such problems in future. Take care. Dr Rishi, New Delhi, India. </s>