Pericoronitis is inflammation of the soft tissues surrounding the crown of a partially erupted tooth, including the gingiva and the dental follicle. If left untreated, the infection can spread, irritate the gingiva, and lead to severe infection that can reach the jaw, cheeks, and neck. The infection can be chronic or acute. Alternatively, acute pericoronitis has intensified wide-ranged symptoms which can include swelling, pain, and fever.