The main cause of scrotal sebaceous cysts is that the sebaceous gland ducts in the scrotum are blocked, so the secretions secreted by the sebaceous glands cannot be completely excreted, leading to stagnation and the formation of sebaceous cysts. Sometimes, if you don’t pay attention to hygiene, there is a blockage of dust or bacteria in case of infection, it can cause the sebaceous gland ducts to be inaccessible, and then folliculitis is formed, which is also a symptom of sebaceous cyst. When sebaceous cysts occur, you must maintain hygiene, pay attention to changing underwear regularly, do not wear tight underwear, try to wear cotton underwear, and eat a light diet. You should quit smoking and drinking, and not eat spicy and irritating food, so as to avoid the scrotal sebaceous cysts from getting more and more serious.