Why do I have chronic cough even after quitting smoking?

Hello,

Welcome to icliniq.com. There is not much of difference between asthma and COPD (chronic obstructive pulmonary disease). COPD is usually seen in a person who has smoked a lot while asthma is seen from childhood, which is not in your case. Acid reflux can cause prolonged duration cough, but it shall subside very well once treated for acid reflux. But in your case, it has persisted. So it has to be either COPD or infection of the lung. I would have favored COPD if you were investigated for Infection and found nothing. Hence I recommend specific tests for evaluating infection as the cause. Kindly get the following test done and revert with reports. computed tomography (CT) chest, BAL microscopy (bronchoalveolar lavage) and culture, ESR (erythrocyte sedimentation rate), Montoux test. I hope this information was useful for you. Any clarification feel free to ask.