28 November 2018, 02:15 PM ... Cough Cough is a means of the human body to get rid of any foreign body (mucus) of the lungs and bronchi. Causes of cough Some of the main causes of short-term (acute) and persistent (chronic)  - Severe inflammation of the bronchial tubes either due to viral infection, or bacterial.  - Sensitivity cases affecting children in certain periods of the classes.  - Asthma.  Smoking is a major cause of cough, which increases at night time due to the secretion of secretions to the pharynx and respiratory tract, causing coughing.