Quinsy is an abscess between the back of the tonsil and the wall of the throat. It's also known as a peritonsillar abscess. It happens when infection spreads from a swollen tonsil to the area around it, usually during a severe case of tonsillitis. The symptoms of quinsy are similar to tonsillitis and include: * a worsening sore throat, usually on one side, * fever, * difficulty opening the mouth * difficulty swallowing * drooling rather than swallowing your own saliva and * swelling of the face and neck. Quinsy is now rare because most people get effective treatment for tonsillitis early enough to prevent it. Quincy may be suspected if you have a sore throat that gets a lot worse very quickly, or tonsillitis with more severe symptoms than normal. Quinsy is treated in hospital. The abscess that has formed has to be aspirated (the pus is sucked out) and antibiotics may be needed to prevent the infection spreading. An operation to remove the tonsils (tonsillectomy) may be recommended a few months after quinsy.