Any health disorder, be it small or big, should be treated as quickly as possible. Something as small as a cough should not be ignored for a long time. I know, it is a common illness that easily gets cured within a couple of days, but if it is prolonged it can be a sign of some major health issues or an indication of a disease.
A prolonged cough can be a symptom of some various serious diseases such as tuberculosis (TB), Chronic Obstructive Pulmonary Disorder (COPD), sinusitis, pulmonary fibrosis, bronchitis, heart failure, lung cancer, etc.
Experts say a chronic cough should be viewed with greater urgency if it is accompanied by any of the following:
a) You are coughing up blood
b) You are losing weight without trying
c) You have chest pain
d) You have trouble breathing.