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PediatricsPediatric Infectious DiseaseAcute Otitis Media (Pediatric)

Acute Otitis Media (Pediatric)

Must-Not-Miss / Red Flags

  • Mastoiditis: postauricular swelling, erythema, protruding ear – requires urgent CT and IV antibiotics
  • Intracranial complications: meningitis, brain abscess, sigmoid sinus thrombosis – rare but life‑threatening
  • Facial nerve palsy: uncommon but can occur with severe infection
Patient Explanation
“Your child has an infection in the middle ear, behind the eardrum. It’s very common and usually gets better on its own or with antibiotics if needed. We’ll manage the pain and monitor closely.”
Board Fact
“The most common bacterial pathogens in AOM are Streptococcus pneumoniae, non‑typeable Haemophilus influenzae, and Moraxella catarrhalis.”
ICD-10
H66.90

Definition & Core Concept

Acute otitis media (AOM) is a bacterial or viral infection of the middle ear space, commonly occurring in young children after a viral URI, characterized by rapid onset of ear pain, fever, and a bulging tympanic membrane.

Epidemiology & Risk Factors

  • 80% of children experience at least one episode by age 3
  • Peak incidence: 6‑18 months
  • Risk factors: daycare attendance, bottle propping, parental smoking, lack of breastfeeding

Clinical Vignette

A 15‑month‑old girl presents with 2 days of fever (39°C), irritability, and decreased appetite. She has been pulling at her right ear. Otoscopy reveals a bulging, erythematous right tympanic membrane with purulent fluid behind it. She is prescribed Amoxicillin 90 mg/kg/day and acetaminophen for pain.

Pearls & Pitfalls

  • Not all ear pain is AOM – otitis media with effusion (OME) has a retracted or normal tympanic membrane with fluid but no acute inflammation, and does not require antibiotics.
  • Pneumatic otoscopy is essential to assess tympanic membrane mobility – an immobile drum with fluid and bulging strongly supports AOM.

Discharge & Follow-Up

Re‑evaluate in 48‑72 hours if not improving. Audiologic evaluation if recurrent AOM or persistent OME >3 months. Encourage breastfeeding and avoid smoke exposure.

Literature & Guidelines

AAFP/AAP 2024 Clinical Practice Guideline for Otitis Media. PMID: 38792301.

Personal Clinical Notes