An upper respiratory infection is perhaps one of the most common illnesses of all and has been with mankind for as long as we can remember. It is not a dangerous condition in itself but has still claimed many lives of people that were already considerably weakened. This was more of a problem in the past when living standards were lower.
The condition is more commonly known to us as the common cold, although it is a blanket term for a selection of illnesses. It will usually pass within a few days or so, rarely even needing a visit to a doctor.
Nonprescription remedies are available that can help to ease the symptoms. Although not dangerous, people that are very vulnerable to illnesses should be monitored. Below are 10 symptoms of an upper respiratory infection to look out for.
Symptom #1: Runny Nose
Every single day, we are inhaling large volumes of air, mostly through our noses. This provides us with a constant source of fresh oxygen, which we need in order to survive. With so much air passing through our airways each day, it is inevitable that some of it will contain pathogens.
To help protect against airborne pathogens, the lining of our nose has a sticky mucus that we know commonly as snot. This mucus traps these pathogens and makes it easier for us to force them out of the body. In the case of a cold, this mucus can become more liquid than usual, causing it to run out of our nose.