Gums and cheeks swollen with a lump may be caused by wisdom teeth pericoronitis, periapical inflammation and other causes. 1. Wisdom tooth pericoronitis: Wisdom tooth pericoronitis refers to the inflammation of the soft tissues around the wisdom tooth, which often manifests itself as severe pain, swollen gums, limited opening of the mouth, fever and other symptoms, and it can be accompanied by cervical lymph node pressure pain, facial swelling and pain symptoms, especially covering the angle of the lower jaw of the cheek tends to be more intense swelling and pain symptoms. 2. Periapical inflammation: Periapical inflammation refers to the inflammation that occurs around the root tip of the tooth, mostly manifested as spontaneous pain, occlusal pain, and sometimes pus may appear on the gums, which can be accompanied by elevated body temperature, fatigue, and may even be accompanied by symptoms such as facial swelling, pain on pressure, and facial changes. Gums and cheeks swollen with a lump may also exist other causes, it is recommended that you should go to the dental specialist in a timely manner, to clarify the cause of the disease, in the doctor’s diagnosis and treatment measures taken accordingly.