You can get the virus that causes colds from a sick person’s cough or sneeze. It brings on a runny nose, sneezing, and sometimes fever. It may irritate your lungs and airways and give you a cough, triggering asthma or infections like pneumonia or bronchitis. There’s no cure, so expect to sniffle and sneeze for 7 to 10 days or so. See your doctor if your symptoms worsen, you have a fever for 5 or more days, or you have a severe sore throat.
This means that the tubes that carry air to and from your lungs are inflamed. A cold or the flu, or irritants like pollen or cigarette smoke, can cause it. You may cough up a thick, sometimes colored mucus. See your doctor if it lingers for 3 weeks or more, if you have a fever, or if you have blood in your mucus. You may need medicine. If you have long-term (chronic) bronchitis, breathing exercises may also help.