Asthma Cough Management

First-Line Treatment Approach

The American College of Chest Physicians recommends initiating combination therapy with inhaled corticosteroids plus inhaled bronchodilators immediately for any patient with chronic cough due to asthma, whether cough is the sole symptom or accompanies other asthma symptoms, with a strong evidence level of 1B 1, 2, 3
The American College of Chest Physicians suggests that beta-agonists should be used in combination with inhaled corticosteroids rather than as monotherapy, as LABA monotherapy increases the risk of serious asthma-related events 1

The American College of Chest Physicians recommends increasing the inhaled corticosteroid dose before adding additional agents, as the first step in sequential escalation for incomplete response to initial therapy 1, 2
The American College of Chest Physicians suggests adding a leukotriene receptor antagonist to the existing inhaled corticosteroid and bronchodilator regimen after reconsidering alternative causes of cough, as the second step in sequential escalation 1, 2, 3
Leukotriene inhibitors have demonstrated efficacy in suppressing cough that was previously resistant to bronchodilators and inhaled steroids, likely by modulating the inflammatory environment around sensory cough receptors, with evidence from studies 3, 4
The American College of Chest Physicians recommends considering a short course of oral corticosteroids only after the above steps fail, followed by transition back to inhaled corticosteroids, with a treatment duration of 1-2 weeks 1, 2, 3, 5

The American College of Chest Physicians recommends performing bronchial challenge testing to confirm airway hyperresponsiveness consistent with asthma when physical examination and spirometry are non-diagnostic, with evidence from studies 1, 2, 6
Non-invasive measurement of airway inflammation has clinical utility, as eosinophilic airway inflammation predicts more favorable response to corticosteroids, with evidence from studies 1, 2

The American College of Chest Physicians advises against using newer non-sedating antihistamines for asthma cough management, as they are completely ineffective and should not be prescribed, with evidence from studies 6
The American College of Chest Physicians recommends not jumping directly to systemic corticosteroids without trying inhaled therapy first, as this exposes patients to unnecessary systemic side effects when inhaled medications are highly effective, with evidence from studies 3, 5

The American Academy of Family Physicians recommends oral corticosteroids, when necessary, should be given for 1-2 weeks, with no tapering required for short courses, with a dosage of 40-60 mg daily in adults and 1-2 mg/kg/day in children for 3-10 days 7
The American College of Chest Physicians recommends monitoring for common inhaled corticosteroid side effects, including oral candidiasis, dysphonia, and potential adrenal suppression with high-dose or prolonged use, although the evidence level for this is not specified 1, 2

Confirming proper inhaler technique is crucial, as incorrect use is a common cause of treatment failure, and adding a spacer device can overcome asthma-related cough, according to the American Academy of Family Physicians 8
Assessing medication adherence is essential, as poor compliance must be excluded before escalation, as recommended by the American College of Chest Physicians 9
Ruling out inhaled steroid-induced cough is necessary, as the ICS itself may be causing or exacerbating cough due to aerosol constituents, and switching from one ICS formulation to another may be considered, as suggested by the American College of Chest Physicians 9, 10
Verifying the patient's smoking status is important, as active smoking reduces corticosteroid responsiveness and must be addressed, according to the American Academy of Family Physicians and the American College of Chest Physicians 11, 12

Increasing the inhaled corticosteroid dose is recommended as the first step in sequential escalation for incomplete response to initial therapy, as suggested by the American College of Chest Physicians 9, 10
Evaluating for alternative/coexisting causes of chronic cough, such as upper airway cough syndrome (UACS) and gastroesophageal reflux disease (GERD), is necessary, and empiric treatment with proton pump inhibitor plus lifestyle modifications is recommended for patients with chronic cough who failed treatment for UACS and asthma, according to the American College of Chest Physicians 11, 13

Prescribing prednisone 40 mg daily for 5-10 days may be considered if cough remains refractory after optimizing ICS dose and addressing alternative causes, as recommended by the American College of Chest Physicians and the American Academy of Family Physicians 13, 8
Complete resolution of asthma-related cough may require up to 8 weeks of treatment, and some patients may require oral steroids when inhaled therapy fails, according to the American College of Chest Physicians 13, 10

Assessing airway inflammation should be performed when available, and the presence of persistent airway eosinophilia on induced sputum or BAL identifies patients who may benefit from more aggressive anti-inflammatory therapy, as suggested by the American College of Chest Physicians 9, 10

Partial improvement may occur within 1 week of optimized therapy, and complete resolution of cough may require up to 8 weeks of treatment with inhaled corticosteroids, according to the American College of Chest Physicians 13, 10
If no improvement after appropriate trials of the above interventions, referral to a cough specialist is indicated, as recommended by the American College of Chest Physicians 11