Otitis Media - Acute Disease Summary

Last updated: 23 April 2026

Overview

Acute otitis media (AOM) is an acute suppurative infection marked by the presence of fluid in and inflammation of the middle ear, as stated in the Introduction section.  

Otitis media can occur at any age but is most commonly seen in children between the ages of 6 and 24 months. A detailed discussion about the prevalence of acute otitis media is in the Epidemiology section.  

Streptococcus pneumoniae and Haemophilus influenzae are the most common causes, while Moraxella catarrhalis is the third most common cause of otitis media. Discussions on these pathogens are in the Etiology section.  

The Pathophysiology section states that otitis media usually begins after a viral upper respiratory infection causing inflammation of the nose, nasopharynx, middle ear, and Eustachian tube. The developmental process of acute otitis media in affected patients is in this section.



Otitis Media - Acute_Disease SummaryOtitis Media - Acute_Disease Summary

History and Physical Examination

The Clinical Presentation section describes the clinical features suggestive of acute otitis media.

The History section and the Physical Examination section explain the importance of noting the history of acute onset of signs and symptoms and physical examination findings of middle ear inflammation and middle ear effusion through otoscopy.

Diagnosis

Other tests that may be considered in the evaluation of acute otitis media are in the Laboratory Tests and Ancillaries section. 

The Imaging section discusses the indications for further diagnostic studies if intratemporal or intracranial complications of otitis media are suspected.  

Other conditions that are needed to be ruled out in the diagnosis of acute otitis media are listed in the Differential Diagnosis section.

Management

Indications for specialist referral are listed in the Evaluation section.

The Pharmacological Therapy section discusses symptomatic therapy and antibiotic therapy as well as the duration of the therapy and topical therapy in the treatment of acute otitis media.

The Nonpharmacological section includes things to educate the patient about the use of analgesics and antibiotics and the management of patients diagnosed with acute otitis media.

The Monitoring section identifies indications for follow-up of patients treated with acute otitis media.