<s>[INST] I am 19 and i have not been sexual active for about half a year, i took a shower this morning but didnt notice anything. Tonight at about 11:30 i went tot he bathroom. After i cleaned myself up i noticed a pimple like thing on my white testicle, as i had cleaned my self i accidentally rubbed it with the paper. Then puss came out, it increased in size a little and has blood coming out but not very much.Its the same color as the rest of my skin, but it is a little shiny, with a hole on the top, the skin on the growth area is very taunt or stretched out. Is it something to be worried about? [/INST] No nothing to worry about. It is a sebaceous cyst. Do not puncture it in future otherwise it can get infected. If it becomes red or painful, it will require a course of antibiotics, otherwise it will not trouble you. If you think it is unsightly or want it to be removed then you will have to undergo a small surgery for its removal. Feel free if you have any other query by contacting me through our Fix an appointment tool. Take care. </s>