Inflammation around the teeth next to the lumps may be related to periodontitis, gingivoma, apical inflammatory granuloma and so on. 1. Periodontitis: it is an inflammation of the gums, which can lead to gum recession, loose teeth, and even tooth loss. Early symptoms are similar to gingivitis, and when the condition worsens, a periodontal pocket is formed between the gums and the root of the tooth, and a purulent secretion will appear. In acute attack, the gums are ovoid protruding, red and swollen, with severe pain, manifested as inflammation around the teeth next to the pimples. 2. Gingival tumor: refers to a group of tumors or tumor-like diseases occurring in the gingiva, originating from the periodontium and the connective tissue of the alveolar process of the jawbone. Most of them are limited, reactive proliferations with the appearance and biological behavior of tumors, but not true tumors; a few of them are true tumors. It is often caused by trauma and chronic irritation, especially subgingival plaque and calculus as the most common cause. 3. Apical inflammatory granuloma: due to tooth decay or cryptic fissure trauma, etc., resulting in chronic infection of the pulp, if not treated in time, the infection will spread to the periapical bone tissue, and then spread to the periapical gingiva, resulting in inflammatory granuloma at the gingiva, which is manifested as a pimple next to the inflammation around the tooth. Inflammation around the teeth may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.