Sebaceous cysts. These belong to a type of benign proliferation that forms after local skin inflammation and infection, where sebaceous glands cluster in a localized area. Generally, once a cyst has formed, medications alone cannot completely eliminate it. Only when the inflammatory infection is severe, can anti-inflammatory medications provide temporary symptom relief. The definitive treatment plan involves a minor surgery in a formal hospital's dermatology department to completely remove it. Normally, there is no recurrence as long as the cyst sac is completely cleared. After treatment, it is essential to regulate one's diet and lifestyle habits, avoid spicy and irritating foods, and minimize activities like public baths and swimming to reduce the risk of re-infection due to bacteria on the skin surface.