URI (rhinitis, sinusitis, pertussis)
LRI<unk> , pneumonia)
Influenza
Allergy
Asthma
Environmental irritants
Transient airway hyperresponsiveness
Foreign body
SARS
Postinfectious; pertussis
Smoking and/or chronic<unk> 
Postnasal discharge
Asthma
GERD
ACEI/ARB
CHF
Lung cancer or intrathoracic mass
Emphysema
Interstitial lung disease
Psychiatric
Acute bronchitis
URI 
Atypical pneumonia
LRI 
Croup
Influenza
Bronchiectasis
Allergy