| Acute (<3 weeks) |
| Acute laryngitis or bronchitis |
| Aspiration |
| Bacterial sinusitis |
| Common cold |
| COPD exacerbations |
| Environmental irritant |
| Pertussis |
| Pneumonia |
| Chronic (>3 weeks) |
| ACE inhibitors |
| Bronchiectasis |
| Chronic bronchitis |
| Cough-variant asthma |
| GERD |
| Heart failure |
| Interstitial lung disease |
| Pleural disease |
| PNDS |
| Post-infection cough |
| Smoking |
