acute otitis media
Bacterial or viral infection of the middle ear space, common cause of fever and irritability in young children.
Full Definition
Acute otitis media (AOM) is one of the most common pediatric infections, involving inflammation and infection of the middle ear space behind the tympanic membrane. It typically affects children under 3 years due to immature eustachian tube anatomy and function. The condition is characterized by rapid onset of symptoms including otalgia, fever, and irritability. Diagnosis requires visualization of a bulging, erythematous tympanic membrane with purulent effusion.
Usage
Usage note: Distinguish from 'otitis media with effusion' (OME) which lacks acute infectious signs.
In Context
- "Acute otitis media was diagnosed based on the bulging, erythematous right tympanic membrane." — Pediatric clinic note
- "Current guidelines recommend watchful waiting for uncomplicated acute otitis media in children over 2 years." — Treatment protocol