Hi, I have a young boy that is turning 12 years old this year. Twice over the last 4 months he has complained to me about a sore penis and both times there has been a small bruise on the head of his penis.  This time he was put on antibiotics and the doctor seemed like he had a knee jerk reaction to the situation thinking that he could of been sexually abused.  I can say for certain that this is not happening but I am thinking that his recent interest in girls this year could be leading to him masturbating himself. My question is can a masturbation cause a 12 year old male to have a bruise or could it be another medical issue that needs to be observed.  He is a typical boy and recently he and his friends went over bmx jumps and the bar on his bike hit his testicles and injured him.  The boys took video footage of this and they all thought it was funny.
Hi, The majority of genital infections I see are from the germs you get anywhere else. Staph, boils, yeast, sometimes strep. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Matt Wachsman, Addiction Medicine Specialist