My exclusive friend has had a pus filled sore on his penis. we have both gone to dr for full v.d. screens. all my tests are negative. he said the sore is still there ,although drying up, and he is having a lot of pain in penis and groin area. p.s. he was going to the tob and not always showering. then he admitted that he never washes his bathing suit, just hangs to dry.
Thanks for asking in Chat Doctor forum Boils are very common in groin area if not kept clean/ Chat Doctor.  So, it is always better to trim the pubic hair with keeping clean and