Cough is a defensive, protective reflex. When a cough persists without an obvious respiratory irritant (eg. chest infection), cough becomes a concern to both patient and physician.
Possible causes:
Rhinitis/rhinosinusitis (post-nasal drip)
Pharyngitis
Tonsillitis
Pneumonia
Bronchitis
Bronchiectasis
Pulmonary TB
Malignant tumour - lung cancer, secondary spread of cancers to lung.
Benign tumour - lipoma, carcinoid.
Asthma
Chronic bronchitis
Bronchiolitis
Interstitial lung disorders
Foreign body inhalation
Drugs - ACE inhibitors
Gastro-oesophageal reflux disease
Congestive heart failure
Functional (psychogenic cough
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