If a man has a pimple on his lower body, if he has unclean sexual intercourse, it may be caused by a local sexually transmitted disease, more common are condyloma acuminata, genital herpes, syphilis or special pathogenic infections. If there is no unclean sexual life, but in the recent lack of attention to hygiene, it is possible that the local production of folliculitis, often acne will be accompanied by local redness, pain and even discharge out, it is recommended that patients promptly to urology or dermatological venereal disease department for local examination to clarify the nature of the specific new organisms. If it is a sexually transmitted disease, symptomatic treatment is needed to prevent the spread of pathogenic bacteria in a timely manner. If it is caused by infectious factors, prompt anti-inflammatory and symptomatic treatment is recommended. Localized skin diseases, such as eczema or immune skin inflammation, should be examined and diagnosed in the dermatology department before targeted treatment can be administered.