Bumps in the scrotum may be caused by folliculitis, scrotal eczema, warts and other factors. 1. Folliculitis: due to more follicular pores in the scrotum area, a lot of sweating in the scrotum, and not paying attention to the cleaning of the scrotum area may induce folliculitis, which will make the bumps appear in the scrotum area, and it may be accompanied by redness, swelling and other symptoms. 2. Scrotal eczema: may be related to environmental factors, dietary factors, can lead to the scrotum area appear red pimples, may also be accompanied by intense itching as well as pain. 3. Condyloma acuminatum: a sexually transmitted disease, mostly caused by unclean sex, can lead to the scrotum and the penis localized small pimples, and accompanied by mild itching and tingling, but also has a strong contagious. Pimples in the scrotum may have other causes, the patient needs to consult the examination, early treatment.