COPD
COPD, also known as Chronic Obstructive Pulmonary Disease, is a chronic inflammatory lung disease which is the reason for obstructed airflow in the lungs. A few common symptoms of this condition are mucus production, breathing difficulty and wheezing. It is caused when your lungs are exposed to a particular matter or any irritating gases. Mostly, it happens due to cigarette smoke as per the best doctor in lucknow.