A cough is how your child's body responds to something that bothers the throat or airways. Many things can cause a cough. Your child might cough because of a cold or the flu, bronchitis, or asthma. Cigarette smoke, postnasal drip, allergies, and stomach acid that backs up into the throat also can cause coughs.
A cough is a symptom, not a disease. Most coughs stop when the cause, such as a cold, goes away. You can do some things at home to help your child cough less and feel better.