Bilateral peritonsillar abscesses: a challenging diagnosis.

Peritonsillar abscess is the most common complication of acute tonsillitis. Bilateral peritonsillar abscesses are much less common, and they may be more difficult to detect on physical examination because the oropharynx often appears to be symmetrical rather than asymmetrical, as is the case in unilateral abscess. Previous steroid treatment may also complicate the diagnosis by masking the signs and symptoms of abscess. We describe the case of a young woman who presented to the emergency department with relatively mild symptoms despite having large bilateral peritonsillar abscesses. We believe that her symptoms had been masked by previous steroid therapy. We also review the treatment and microbiology of peritonsillar abscess.