Cough

Coughing is a natural reflex that helps clear the airways of mucus, irritants, and other foreign substances. It is the body's way of cleaning out the respiratory system. Coughing can be caused by a variety of conditions, including allergies, asthma, colds, and other infections. It can also be triggered by irritants in the environment, such as smoke or dust. Coughing can be productive or non-productive. Productive coughing produces mucus (phlegm) or other secretions from the lungs. Non-productive coughing does not produce any mucus or other secretions. It can be a sign of a more serious condition, such as bronchitis or pneumonia.