Hello, the common causes of gum swelling and pain are gingival abscess, periodontal abscess, pericoronitis of wisdom teeth or periapical periodontitis. Patients often have chronic inflammation. When the body's resistance drops, the weather is dry, people eat spicy food or suffer from diabetes and other diseases, the original chronic inflammation suddenly attacks and the symptoms of gum swelling and pain appear, so corresponding oral treatment is needed. Suggestion: Tooth swelling and pain depends on what causes it. If it is common gum inflammation, take some common anti-inflammatory drugs, such as metronidazole tablets and tinidazole tablets. If it is caused by tooth decay, you should go to the hospital.