A persistent cough after a respiratory infection is very common

You often feel like coughing for weeks after an infection, even though you feel well again. According to a study, about 11 to 25% of infected people still suffer from the so-called post-infectious cough even weeks after the respiratory infection.

This cough usually disappears after a maximum of eight weeks without taking medication. Researchers led by Samantha Green of the University of Toronto summarized the case study in the Canadian Medical Association Journal.

During and shortly after infection, the cough trigger assumes several important functions in the healing process because it transports bronchial mucus from the lungs. If the cough persists for several weeks after the infection has subsided, usually between three and eight, it is called post-infectious cough.

Studies show that symptoms in patients without pre-existing illnesses usually subside on their own after a period of time – so medication is not necessary. If the urge to cough occurs, experts recommend using simple, well-known home remedies instead. A sip of water or tea can soothe an annoying cough. Breathing air moisturizes the respiratory system, and various herbal remedies, such as sage and ivy, can speed up the healing process.

However, to get proper treatment, it's important to know whether a cough is a harmless result of an infection — or a form of asthma, COPD, or a symptom of another disease. Smokers and people with weakened immune systems also need to look closely, because they are often affected more seriously and for longer periods of time.

The Canadian research group concludes that good educational work done by treating physicians is particularly important when dealing with cough: “It is important to reassure sufferers that post-infectious cough is temporary and usually resolves on its own. This can help avoid unnecessary prescriptions, Including antibiotics. If the cough does not go away after eight weeks, it should be examined more closely. (SDA/EPA)