Redness and swelling of the scrotum in the elderly may be related to scrotitis, orchitis, scrotal eczema and other causes. 1. Scrotal inflammation: the scrotum area of the elderly is infected with bacteria and other pathogens, which can cause inflammatory reaction of the surface skin, and redness and swelling of the skin, pain and other symptoms can occur. 2. Testiculitis: Testiculitis caused by bacterial and viral infections can result in redness and swelling of the scrotal skin. 3. Scrotal eczema: it is an allergic disease caused by the interaction between internal and external factors, which can present symptoms such as skin flushing and swelling. It is recommended that elderly people with red and swollen scrotum go to the hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor so as not to delay the condition.