Bronchitis is the inflammation of passages in the lungs known as the bronchi. It can either be viral or bacterial in nature. It is classified as either acute or chronic. Acute bronchitis usually lasts one week; however, chronic bronchitis is a long-term ailment that may require significant medical attention. Those who smoke or are exposed to industrial pollutants are more likely to develop chronic bronchitis. Symptoms of bronchitis include coughing, tightness in the chest, breathlessness ...