A wisdom tooth infection, also known as pericoronitis, can occur when bacteria get trapped beneath the gum flap covering a partially erupted wisdom tooth. Some common signs and symptoms of a wisdom tooth infection include: Pain and Discomfort: You may experience pain or tenderness around the affected wisdom tooth, which can radiate to the jaw and ear on the same side. Swelling: Swelling of the gum tissue around the impacted wisdom tooth is common in cases of infection. Redness and Irritation: The gum tissue near the affected area may appear red and inflamed. Bad Taste or Odor: An unpleasant taste or odor in the mouth can occur due to the presence of infection. Difficulty Opening Mouth: In severe cases, pericoronitis can cause difficulty in opening the mouth or discomfort while chewing. If you suspect you have a wisdom tooth infection, it's crucial to seek dental evaluation and treatment promptly. An infected wisdom tooth can lead to complications and should be addressed by a dentist or oral surgeon to prevent further issues.