10 Flu Symptoms

4 Runny or stuffed nose/ sneezing

In the first days of infection, the nose is often runny. One of the defense mechanisms of the upper respiratory tract is excessive mucus production accompanied by sneezing. This is the body attempting to get rid of the virus from the surface of the epithelium.

As the inflammatory response and virus-induced damage intensify, mucous membranes swell, causing a stuffy nose and breathing difficulties. This symptom is not only unpleasant, but it can cause complications such as sinusitis or middle ear inflammation (due to compromised drainage of the middle ear and sinuses, mucus piles up providing perfect conditions for bacterial infection).

Runny Nose. Photo by Evening Tao

About Dr Alex Grbovic 13 Articles
Dr Aleksandar Grbović is a medical doctor from the Belgrade University, Faculty of Medicine. He is passionate about promoting medicine by bridging the gap between the patient’s and doctor’s point of view. Currently working in the biggest Occupational Medicine Institute in Serbia and attending the Radiology residency program.


The content of this website is not intended to be taken as a replacement for professional medical advice, care, diagnosis or treatment of a doctor, dietician, nutritionist or fitness instructor. If you experience any medical symptoms you should consult your doctor immediately for proper diagnosis and treatment.