Bronchitis is an inflammation of the inner mucus lining of the bronchial tubes in the lungs, which is often caused by a respiratory infection. These branch-like passageways, also known as bronchi, ...

Medically reviewed by Susan Russell, MD Key Takeaways Asthmatic bronchitis occurs when someone with asthma develops acute bronchitis, usually due to a viral respiratory infection like a cold or ...

When you first start coughing, feel fatigued, and notice a low-grade fever, it can be hard to determine whether you have the common cold or bronchitis. A cold can potentially turn into bronchitis.