Steroid Treatment for Chronic Bronchial Cough

Initial Diagnostic Approach

The American College of Chest Physicians recommends that for chronic cough lasting more than 2 months, steroids should NOT be routinely prescribed unless specific underlying conditions are identified through systematic evaluation, including testing for bronchial hyperresponsiveness and eosinophilic inflammation 1, 2
Before considering steroid therapy, common causes such as upper airway cough syndrome, asthma, and gastroesophageal reflux disease must be evaluated and treated 3, 4
Objective testing, including testing for bronchial hyperresponsiveness and eosinophilic bronchitis, or a therapeutic corticosteroid trial, should be performed to guide diagnosis 1, 2
Chest radiography should be obtained to exclude interstitial lung disease, sarcoidosis, or other structural abnormalities 4, 5

For postinfectious cough, a trial of inhaled ipratropium bromide is recommended as first-line treatment, followed by inhaled corticosteroids if cough persists 3, 6
For severe paroxysms, prednisone 30-40 mg daily may be prescribed for a short, finite period after ruling out upper airway cough syndrome, asthma, and GERD 3, 6
For cough variant asthma, a diagnostic trial of prednisone 30 mg daily for 1-2 weeks may be used to establish diagnosis, and inhaled corticosteroids may be used for long-term management 3
For eosinophilic bronchitis, inhaled corticosteroids are first-line treatment, and oral corticosteroids may be added if symptoms persist despite high-dose inhaled steroids 7
For specific interstitial lung diseases, such as hypersensitivity pneumonitis, sarcoidosis, and toxic/antigenic exposure bronchiolitis, corticosteroids may be used in addition to addressing the underlying cause 3, 4, 5, 6

For unexplained chronic cough, steroids are not recommended if testing for bronchial hyperresponsiveness and eosinophilia is negative, according to a Grade 2B recommendation from the American College of Chest Physicians 1, 2
Alternative treatments, such as multimodality speech pathology therapy or gabapentin, may be considered after discussing risks and benefits 1, 2
For acute bronchitis, systemic corticosteroids are not justified in healthy adults, as the clinical course is self-limited and steroids provide no benefit while exposing patients to unnecessary risks 8

For postinfectious cough, a trial of inhaled ipratropium bromide, followed by inhaled corticosteroids if cough persists, and short-course prednisone for severe paroxysms, is recommended 3, 6
For chronic cough lasting more than 8 weeks, obtaining sputum eosinophils or exhaled nitric oxide and bronchial hyperresponsiveness testing is recommended, and inhaled corticosteroids may be used if eosinophilia is present 1, 2, 7
For suspected cough variant asthma, a diagnostic trial of prednisone 30 mg daily for 1-2 weeks, followed by transition to inhaled corticosteroids if responsive, may be used 3
For interstitial lung disease, addressing the specific etiology and using corticosteroids if physiologic impairment is present is recommended 4, 5

The American Thoracic Society recommends oral prednisone 40 mg daily for 1-2 weeks to treat severe or refractory asthmatic cough, followed by transition to inhaled corticosteroids 9, 10
Complete resolution of cough may require up to 8 weeks of inhaled corticosteroid therapy after the initial oral course 9, 11
In sarcoidosis with cough, oral corticosteroids may lead to symptomatic improvement over 6-24 months, though an individualized risk-benefit analysis is necessary given significant side effects 12, 13, 14
For hypersensitivity pneumonitis with physiologic impairment, systemic corticosteroid therapy is recommended alongside removal of the offending exposure 14

Inhaled corticosteroids may induce or exacerbate cough due to aerosol dispersants, not the steroid molecule itself 9, 11
Beclomethasone dipropionate causes cough more commonly than triamcinolone acetonide due to dispersant components 9, 11
Before escalating therapy, consider inhaled steroid-induced cough, improper inhaler technique, or other contributing conditions like GERD 9, 11

Oral corticosteroids carry significant systemic side effects, including immunosuppression and increased infection risk, hyperglycemia, osteoporosis with prolonged use, and hypothalamic-pituitary-adrenal axis suppression 12, 13