A review of the pathogenesis of adult peritonsillar abscess: time for a re-evaluation.

Objectives: To perform a multifactorial exploration of the aetiology of peritonsillar abscess (PTA) in adults, in order to develop greater clinical understanding of the condition and improve management.

Design: A literature review exploring key pathogens, predisposing host factors and current pathogenic hypotheses.

Methods: A PubMed search for articles published between January 1980 and January 2012 using the terms 'peritonsillar abscess AND microbiology', 'peritonsillar abscess AND pathophysiology' and 'peritonsillar abscess AND etiology'.