The causes of chronic cough are very varied and are related to different systems.

In this article, we explain what respiratory infections are.

Because the respiratory infections trigger cough?

respiratory infections They encompass a large number of illnesses with a range of severity from a simple cold to severe pneumonia. They are caused by viruses, bacteria, and fungi and are transmitted from person to person through the droplets of saliva we expel when we cough, sneeze, or talk. They can also be transmitted through direct contact with contaminated surfaces.

Infections can cause coughing for several reasons:

• Microorganisms inflame and irritate the airways, triggering the cough reflex.
• To protect the airways from infection and as a result of inflammation, the body produces more mucus and phlegm than usual, which can clog the bronchial tubes and make it difficult for air to pass through. To eliminate this excess mucus, the cough reflex is activated.

To help clear the airways, they have ciliated cells (hair-like cells) that act like a "conveyor belt," pulling mucus along to facilitate its removal and renewal. However, if the amount is excessive, this "belt" doesn't function properly.

After the acute period of infection, the cough and inflammation may persist, causing phlegm to continue to accumulate, making the airways more sensitive and reactive. Therefore, the cough reflex is activated by minimal stimuli, in addition to the need to eliminate accumulated secretions.

Respiratory infections are one of the possible causes of cough. If it persists for more than 8 weeks, we are dealing with a case of chronic cough.

Author: Eva Maroto

References:

1. Molero, JM. Cough associated with infections. SemFYC (Comprehensive approach to cough in primary care: an informative document from the SEMFYC)