Men with acne on top of their genitals can consider folliculitis, prepuce glans and sexually transmitted diseases such as genital herpes, and it is recommended to go to the hospital for further examination. 1. Folliculitis: because of the dense distribution of hair follicles and sweat glands in the penile skin, if you don’t pay attention to personal hygiene and don’t do a good job of local cleaning, it may cause folliculitis and sebaceous cysts. 2. Circumcision and glansitis: for those who are circumcised or circumcised, if the cleaning is not timely and thorough, it may lead to the accumulation of foreskin scale, and long-term stimulation will trigger circumcision and glansitis, and small pimples may appear. 3. Sexually transmitted diseases: If there is a history of unclean sex, you may be infected with warts and genital herpes and other sexually transmitted diseases, but also in the early symptoms of pimples. Pimples on top of a man’s sexual organs may also be caused by other factors, so it is recommended to go to a regular hospital to seek further examination and treatment by a doctor.