A cough is your body’s pretentiousness of responding in the space of something irritates your throat or airways. An irritant stimulates nerves that send a freshen to your brain. The brain well ahead tells muscles in your chest and abdomen to p.s. ventilate out of your lungs to force out the irritant. Cough and Cold in Pallikaranai, Medavakkam, Mambakkam

An occasional cough is sufficient and healthy. A cough that persists for several weeks or one that brings happening discolored or bloody mucus may indicate a condition that needs medical attention.