One or both tonsils become infected. The infection may spread over the roof of the mouth (palate), and to the neck and chest, including the lungs. Swollen tissues may block the airway, which is a life-threatening medical emergency.
Symptoms of peritonsillar abscess include:
An examination of the throat and neck may reveal redness and swelling of one or both tonsils, throat, neck, and chest.
Tests may be done to figure out what type of bacteria is causing the infection. Aspiration of the abscess usually shows fluid containing pus.