Wisdom tooth pericoronitis can present with symptoms such as redness and swelling of the gums or fever. Wisdom tooth pericoronitis is an inflammation of the blind pocket of the far middle gum due to the inability of the wisdom tooth to fully erupt. In the early stages of wisdom tooth pericoronitis, there is only slight swelling and pain around the crown, and there may be painful eating, redness of the gums, or food debris or soft scale around the gums. If left untreated, further aggregation of inflammation will result in increased biting pain, as well as significant percussion pain, sometimes resulting in toothache, red and swollen gums, pressure on the gums with pus overflow, or white erosion, sometimes with significant throbbing pain, and further development of inflammation invading the masticatory muscles, resulting in restricted mouth opening. Wisdom tooth pericoronitis can also appear systemic symptoms, local symptoms are not treated in time, inflammation further into the maxillofacial space, causing multiple interstitial infection of the maxillofacial area, this situation needs to be distinguished from the dental nerve septic necrosis caused by tooth decay interstitial infection, there will also be varying degrees of fever, chills or headache, inflammation can cause sepsis, and even life-threatening. Therefore, pericoronitis of wisdom tooth can show local symptoms such as swelling and pain, restricted mouth opening, etc. If left untreated, it can also show serious symptoms such as interstitial infection or sepsis.