Coughs Overview

A cough is an action your body takes to get rid of substances that are irritating to your air passages, which carry the air you breathe in from the nose and mouth to the lungs.

A cough occurs when special cells along the air passages get irritated and trigger a chain of events. The result?

Air in your lungs is forced out under high pressure. You can choose to cough (a voluntary process), or your body may cough on its own (an involuntary process).