Airway obstruction
Rupture<unk>  with aspiration of contents
Hemorrhage due to erosion of carotid sheath
Retropharyngeal<unk> 
Mediastinitis
Recurrence occurs in 10-15% of patients
Lemierre's syndrome
Iatrogenic laceration of carotid artery
Carotid artery is 2.5 cm posterior and lateral to tonsil
Should limit depth of needle insertion to <10mm during aspiration
Carotid artery is 2.5 cm posterior and lateral to tonsil
Should limit depth of needle insertion to <10mm during aspiration
Airway obstruction
Recurrent severe pharyngitis or<unk> 
Failure of<unk>  resolution with drainage
Peritonsillar abscess
Streptococcal pharyngitis 
Peritonsillar cellulitis
Neisseria gonorrhoeae
Retropharyngeal abscess
Diphtheria 
Epiglottitis
Bacterial Tracheitis