11. Persistent cough

It is not normal to have a persistent cough, as it should go away within a few days with the correct treatment when it doesn’t imply a more serious health issue. 

However, if you experience a persistent cough, you may be presenting symptoms of respiratory infections, allergies, asthma, and lung diseases. 

Especially when accompanied by other symptoms like shortness of breath, blood in the sputum, or unexplained weight loss, you should seek professional help to address the causes.