A peritonsillar abscess is a painful, pus-filled collection of tissue that forms in the back of the throat near one of the tonsils. They require medical treatment. Share on Pinterest Peritonsillar ...

A peritonsillar abscess is a bacterial infection that usually begins as a complication of untreated strep throat or tonsillitis. A pus-filled pocket forms near one of your tonsils. It can cause pain ...