Scrotal rice pimples may be caused by folliculitis, scrotal eczema, warts and other reasons. 1. Folliculitis: there are more hair follicles in the scrotum area, and because the scrotum area is more humid, it is easy to complicate bacterial infection, causing folliculitis, the hair follicles become swollen after inflammation, and you can see scrotal milia pimples in the scrotum. 2. Scrotal eczema: patients due to decreased immunity, scrotal moisture and other reasons easily lead to scrotal eczema, eczema prominent skin manifestations, can be seen in the scrotum as a rice-like pimples. 3. warts: due to unclean sexual intercourse and other reasons lead to human papilloma virus infection caused by warts, warts can be formed in the scrotum area of the small reddish pimples, with the progress of the disease, the pimples can grow to the size of a grain of rice. There may be other reasons for the rice-like pimples on the scrotum, and it is recommended that you actively consult with a professional physician for diagnosis and treatment.