Following is/ are the causes of chronic cough with noncontributory chest radiograph?: (A) Asthma, (B) Post nasal drip, (C) GERD, (D) All the above
Answer is D. 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.