Following is/ are the causes of chronic cough with noncontributory chest radiograph?
90% of patients who have chronic cough and a normal or noncontributory chest radiograph belong to one of the following causes:i) Use of an angiotensin-conveing enzyme inhibitorii) Post-nasal drainageiii) Gastroesophageal reflux andiv) Asthma.
Asthma
Post nasal drip
GERD
All the above