Otitis Media in Children: Acute, Serous and Chronic

Otitis media is the most common childhood infection — 80% of children have at least one acute otitis media (AOM) episode by age 5, and 40% have ≥3. Peak incidence 6-24 months. Why so common at this age? Anatomical and functional reasons.

The Eustachian tube differs in children from adults: shorter (2 cm vs 3.5 cm), wider, more horizontal, weaker tonic muscle support. These features ease passage of nasopharyngeal secretions and infection to the middle ear. Tube maturation continues to ~6-7 years; AOM incidence drops markedly after.

Risk factors: age (6-24 months), male sex (slight), daycare/nursery (increased microbe exposure), passive smoking, bottle-feeding while supine (reflux risk), family history, poor air quality, season (autumn-winter), low birth weight, allergic rhinitis, GERD, adenoid hypertrophy, immune deficiency (IgA, IgG2, IgG4), craniofacial anomaly (cleft palate, Down syndrome).

Pathogenesis: viral URI → nasopharyngeal inflammation → Eustachian obstruction → negative middle ear pressure → fluid transudation (effusion, initially sterile) → bacterial co-infection → AOM. Patients may rest at any stage of this chain.

Pathogens: Streptococcus pneumoniae (most common, 40-50%), Haemophilus influenzae (25-30%, non-typeable), Moraxella catarrhalis (10-15%), Group A Streptococcus (rare). Viral primary or co-pathogen: RSV, rhinovirus, influenza, adenovirus.

Pneumococcal conjugate vaccination (PCV-13) era brought epidemiologic change: resistant pneumococcal serotypes decreased, relative rise of H. influenzae. This affected antibiotic choice.

Turkey: pneumococcal and Hib vaccines are in routine schedule; AOM is relatively reduced but still common. Misattribution to "teething" is frequent — fever + irritability claimed to be from teething is often AOM. Related overview: our otology and hearing centre.

AAP/AAOHNS 2013 diagnostic criteria: 1) middle ear effusion (pneumatic otoscopy with reduced mobility or bulging drum), 2) acute onset symptoms (hours-days) — fever, pain, irritability (in infants — fussiness, feeding refusal, ear tugging), 3) middle ear inflammation — bulging drum, red/yellow drum, perforation with purulent discharge.

Pneumatic otoscopy is the gold standard — using an otoscope with a rubber bulb to create slight positive/negative pressure and observe drum movement. Absent/reduced movement = effusion. Visual otoscopy alone is unreliable (high false positives). Tympanometry helps (type B or C2 curve).

Severity: mild/moderate — moderate pain, fever <39°C, no systemic upset. Severe — severe pain, fever ≥39°C, symptoms >48 hours, unilateral + systemic upset.

Treatment choice (AAP 2013, AAOHNS updates): <6 months — all antibiotic. 6-23 months — bilateral, purulent discharge or severe — antibiotic; unilateral mild-moderate — antibiotic or watchful waiting (shared decision; antibiotic if not improving in 48-72 hours). 2+ years — bilateral, purulent discharge or severe — antibiotic; unilateral mild-moderate — watchful waiting preferred.

Antibiotic choice: amoxicillin 80-90 mg/kg/day in two divided doses, 10 days (≤2 years or severe) or 5-7 days (>2 years, mild-moderate). Beta-lactam allergy: macrolide (azithromycin), cephalosporin (cefdinir, cefuroxime). Treatment failure (no improvement in 48-72 hours): high-dose amoxicillin-clavulanate — for beta-lactamase H. influenzae and M. catarrhalis. Persistent failure — IM ceftriaxone for 3 days, tympanocentesis with culture.

Symptomatic treatment: oral analgesics (paracetamol, ibuprofen) — pain control; topical anaesthetic ear drops (lidocaine — if no perforation, age ≥2); warm compress. Corticosteroids, antihistamines, decongestants: no proven benefit in AOM — not routinely recommended.

Complications (rare): mastoiditis (post-auricular tender swelling, fever), labyrinthitis (vertigo, sensorineural loss), facial palsy, intracranial spread (meningitis, brain abscess, lateral sinus thrombosis). Common pre-antibiotic era; now rare but life-threatening if missed.

OME: middle ear effusion without acute inflammation — no pain, no fever. The child is usually asymptomatic or has mild hearing difficulty (problems with teacher, loud TV, "doesn't hear what I say"). Hence "silent" — can continue undetected.

Incidence and natural history: in some infants under 1 year, peak 1-3 years. After AOM, 50-70% have residual OME (median 1 month); 50% resolve in 3 months, 75% in 6, >90% in 1 year. Remainder persists.

Diagnosis: pneumatic otoscopy (no drum movement, no bulge but opaque/translucent, air-fluid level, bubbles), tympanometry (type B — flat; C2 — peak shifted with negative pressure), audiometry if needed (age-appropriate VRA, play, pure tone; conductive loss 25-40 dB).

Risk assessment: language development delay (especially 18 months-3 years), learning difficulty (preschool), attention problems, behavioural change (irritability, social withdrawal), comorbid hearing impairment (genetic, past otitis), low socio-economic (limited language exposure), risk groups (Down, cleft palate).

Management: watchful waiting up to 3 months (majority resolve). After 3 months persistent + hearing loss (>25 dB bilateral or >40 dB unilateral): 1) ENT review, 2) ventilation tube (tympanostomy, "grommet") suggested.

Ventilation tube procedure: outpatient, usually general anaesthesia, 10-15 minutes; myringotomy (small incision) + tube placement. Tube stays 6-18 months, falls out on its own (often 9-12). Effect: middle ear ventilation, immediate hearing normalisation, decreased persistent OME and recurrent AOM.

Outcomes and follow-up: hearing improves dramatically; language catches up. Complications: persistent perforation (2-5%), tubotitis (discharge, 15-30%), myringosclerosis (drum plaques). Mostly mild. Water exposure occasionally a problem — some doctors restrict swimming/water; modern evidence is more permissive.

Adenoidectomy for OME: useful with recurrent OME or AOM and adenoid hypertrophy. Particularly valuable in children ≥4 years. Combined with tubes reduces need for repeat tympanostomy. More detail: hearing loss page.

Chronic suppurative otitis media (CSOM): >3 months persistent ear discharge + persistent tympanic membrane perforation. CSOM follows undertreated AOM/OME, immune deficiency, anatomic anomaly, chronic mucositis.

Classical findings: chronic foul-smelling discharge, conductive hearing loss, dry-tap variant (no discharge but persistent perforation).

Medical: topical antibiotic drops (ciprofloxacin, ofloxacin — safe in middle ear, avoid aminoglycosides; longer topical antibiotic courses as needed; alkaline or alcohol-acetic acid drops), keep dry (water exposure prevention), cotton or earplug protection.

Cholesteatoma suspicion: foul discharge + perforation + keratin/granulation behind drum → cholesteatoma. CT and surgery (mastoidectomy) mandatory.

Tympanoplasty: considered after 6-12 months of dry perforation. Autologous material (temporalis fascia or conchal cartilage) for drum reconstruction. Success 85-95% (dry intact drum). Hearing usually improves.

Tube complications: persistent perforation (drum does not close after tube exit — 2-5%), blockage (drying), early extrusion (3-6 months; reinsertion needed), reactive granulation, chronic discharge.

Consequences of bilateral persistent hearing loss: language delay (≥6 months impact), academic falling behind, social interaction difficulty, behavioural issues. Hence persistent OME warrants early action — particularly during 6 months-3 years critical window.

Risk reduction: vaccination (PCV-13, Hib, influenza, COVID-19 in risk groups), breastfeeding (at least 6 months), reduce smoke exposure, avoid bottle in bed, early cleft palate surgery + monitoring, daycare hygiene, indoor air quality. Related reading: our patient testimonials.