Swelling in the face next to the tooth should be checked for wisdom tooth pericoronitis, periapical inflammation or allergy symptoms. Specifically, you need to go to the hospital to confirm the combination of oral and medical history. 1. Wisdom tooth pericoronitis. Wisdom tooth pericoronitis when the tissue around the wisdom tooth is swollen and red, there is abnormal fluid exudation, in severe cases, lymph node enlargement can occur, the infection to the facial muscle space, it will cause interstitial infections, facial swelling needs to be rinsed and then considered for extraction. 2. Periapical inflammation. When apical periodontitis occurs in a tooth, if the inflammation cannot be drained from inside the tooth, it will break through the periosteum to reach the mucous membrane, which will also cause facial swelling, and it is necessary to carry out root canal treatment to establish a drainage channel, and the facial swelling will be eliminated slowly. 3. Allergy symptoms. When the body is exposed to allergens, the mucous membrane in the oral cavity can appear localized swelling, generally no pain and other symptoms, swelling rapidly visible local redness, oral examination can often be found without dental tissue inflammation. Need to immediately find the source of sensitization, stop contact with the medical advice to take anti-allergy drugs loratadine. The face next to the teeth is swollen, it is recommended to go to the hospital in time to check the cause of the targeted treatment, the use of drugs need to follow the doctor’s advice.