What is the recommended assessment and management of cough in children?

Assessment and Management of Cough in Children

Cough in children must be managed differently than in adults, with treatment based on identifying the underlying etiology rather than providing symptomatic relief—avoid over-the-counter cough medications, as they lack evidence for efficacy and carry risks of serious adverse events including death in young children. 1

Defining Chronic vs. Acute Cough

• Chronic cough: Daily cough lasting > 4 weeks in children ≤ 14 years 1, 2
• Acute cough: Duration < 4 weeks, typically self-limiting viral illness
• The 4-week threshold is critical because 18-30% of children with cough persisting beyond 4 weeks have serious underlying conditions (bronchiectasis, foreign body aspiration, cystic fibrosis, chronic pneumonia) 1

Initial Assessment Approach

For Chronic Cough (> 4 weeks)

Use a pediatric-specific algorithmic approach based on cough characteristics and clinical history (Grade 1A recommendation) 2:

1. Classify the cough type:

   • Specific cough: Associated with identifiable disease features (wet/productive cough, hemoptysis, digital clubbing, failure to thrive, dyspnea at rest)
   • Non-specific cough: Dry cough without other respiratory or systemic signs

2. Mandatory initial investigations (Grade 1B) 2:

   • Chest radiograph for all children
   • Spirometry (pre- and post-β2 agonist) when age-appropriate (typically ≥ 6 years)

3. Do NOT routinely perform (Grade 1B) 2:

   • Skin prick testing
   • Mantoux testing (unless TB exposure suspected)
   • Bronchoscopy
   • Chest CT
   • These should only be done based on specific clinical indicators

Key Clinical Pointers to Identify

Look for these specific features during history and examination:

• Wet/productive cough: Suggests protracted bacterial bronchitis, bronchiectasis, or suppurative lung disease
• Paroxysmal cough with inspiratory whoop: Consider pertussis 2
• Snoring, mouth breathing, nasal symptoms: Upper airway pathology
• Cough with feeding or choking: Aspiration risk
• Exercise-induced symptoms: Possible asthma
• Environmental exposures: Tobacco smoke, allergens
• Impact on quality of life: Assess effect on child and family 2

Management Principles

What NOT to Do

Avoid empirical treatment approaches (Grade 1A) 2:

• Do NOT empirically treat for upper airway cough syndrome, GERD, or asthma unless specific features of these conditions are present
• Do NOT use over-the-counter cough and cold medications—they provide no benefit and risk serious adverse events 1
• Do NOT use codeine-containing medications due to risk of respiratory distress 1
• Do NOT use antihistamines for cough relief in children—minimal to no efficacy 1

What TO Do

Treat based on identified etiology 1:

1. If empirical treatment is attempted based on clinical features:

   • Use a defined, limited duration trial to confirm or refute the diagnosis 2
   • Follow up to assess response within expected timeframe
   • Stop medications if no effect 1

2. For acute cough:

   • "Wait, watch, review" approach
   • Honey may provide more relief than no treatment or diphenhydramine (but not better than dextromethorphan) 1
   • Educate parents about expected illness duration and risks of OTC medications

3. Address environmental factors in all cases:

   • Tobacco smoke exposure
   • Allergen exposure
   • Air quality issues

Common Pitfalls to Avoid

• Assuming adult causes apply to children: Common etiologies differ significantly between adults and children; age and clinical setting must guide evaluation (Grade 1B) 1
• Dismissing persistent cough as "post-viral": Up to 30.8% have serious underlying disease 1
• Using medications without defined endpoints: Always establish expected timeframe for response and reassess 1
• Ordering extensive testing routinely: Individualize additional tests based on clinical presentation, not as a screening battery 2

Special Considerations

• Children > 6 years with suspected asthma: Consider testing for airway hyperresponsiveness (Grade 2C) 2
• Pertussis suspected clinically: Undertake specific testing for Bordetella pertussis 2
• Resource-limited settings: Consider region-specific etiologies (TB, parasitic diseases) 1

Quality of Life Impact

Cough negatively impacts both child and family quality of life 1. Assessment of this impact should be part of every consultation, and parent education regarding expectations and fears is valuable in management 1.

The evidence strongly supports using systematic, pediatric-specific protocols rather than adult-based approaches or symptomatic treatment strategies, as this improves clinical outcomes and reduces unnecessary medication exposure (Grade 1B) 2.