Many bumps on the scrotal skin are possible causes: 1. scabies nodules, caused by mite infection, manifesting as local itching or nodules raised on the skin surface, which can be seen on closer inspection as mite channels or accompanied by local skin scratches, local pain, etc., requiring mite related testing and treatment; 2. systemic allergies and local allergic reactions, such as contact with allergic medications or foods that cause systemic The nodules are usually windy and can be higher than the skin surface, accompanied by local pain. The surface is accompanied by pain, oozing, bad odor, etc. Local excision pathology and histological examination are needed to confirm the diagnosis.