Here's what causes bronchitis, how the illness usually spreads and how you can treat symptoms if it affects you or a loved ...

Short-term exposure to PM2.5 can cause respiratory reactions like coughing, watering eyes, asthma attacks, and chronic ...

Understanding the different types of bronchitis can also be helpful in understanding when the illness is and isn't contagious. Chronic bronchitis caused by environmental irritants, for instance ...