How to treat a boil on the mouth
Generally, the development of a boil on the lips may be caused by factors such as dietary irritation, poor oral hygiene, lip folliculitis, infection associated with ectopic sebaceous glands, or low immunity. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve the condition under a doctor's guidance through general care, medication, and other treatments. Specific analyses are as follows:

1. Dietary irritation: Long-term consumption of spicy, fried, or irritating foods can lead to congestion of the lip mucosa, making hair follicles more susceptible to irritation and resulting in boils. Adjust your diet immediately to focus on mild foods, consume more cooling fruits such as pears and watermelon, avoid alcohol and spicy foods, and reduce irritation to the lips.
2. Poor oral hygiene: Food residues left on the lips and between teeth promote bacterial growth, which can invade hair follicles and cause boils. Brush your teeth thoroughly every morning and night, rinse your mouth with warm water after meals, use dental floss to clean food particles between teeth, and maintain clean, dry lips and oral cavity.
3. Lip folliculitis: Hair follicles around the lips become infected with Staphylococcus aureus, leading to red papules that develop into boils. Patients should follow medical advice to apply topical medications such as mupirocin ointment, fusidic acid cream, or compound polymyxin B ointment. Avoid squeezing the boil with hands to prevent the infection from spreading intracranially.
4. Infection secondary to ectopic sebaceous glands: Blockage of sebaceous gland ducts on the lips forms small cysts, which may become secondarily infected and develop into painful, red, swollen boils. During the early stage of infection, follow medical instructions to take antibiotics such as cefaclor capsules, amoxicillin capsules, or roxithromycin dispersible tablets to control inflammation. Monitor changes in the cyst after the inflammation subsides.
5. Low immunity: Chronic sleep deprivation and excessive fatigue can weaken the immune system, making the lips more vulnerable to bacterial invasion and boil formation, with slower healing. Patients should follow medical advice to take immunomodulatory agents such as transfer factor oral solution, thymopeptide enteric-coated tablets, or pidotimod oral solution to enhance immunity.
In daily life, avoid peeling off dead skin on the lips with hands to prevent skin breaks and subsequent infections. Speak and eat gently to minimize friction on the boil. Supplementing vitamin C appropriately can strengthen skin resistance, promote boil resolution, and maintain healthy lip skin.