Your bronchial tubes, which carry air to your lungs, can get infected and swollen. When that happens, it’s called bronchitis. Symptoms of this condition include a nagging cough, and you might hack up mucus that’s yellow or green.
There are actually two types of bronchitis:
Acute bronchitis: This is the more common type. Symptoms last for a few weeks, but it doesn’t usually cause any problems past that.
Chronic bronchitis: This keeps coming back or doesn’t go away at all. It’s...