- Shortness of breath
- Swelling or inflammation of the bronchi
- Fever and chills
- Runny nose
- Production of mucus
Bronchitis is very common in winter months and is commonly caused by a virus. It is contagious, spreading when an infected person coughs, sneezes or even talks. The acute version can also be caused by exposure to smoke, chemicals or air pollution. Cigarette smokers often suffer from chronic bronchitis.