Common cold Common cold is the most common ailment seen in people. Almost all of us have common cold multiple times in a year.   Let us learn more about this common ailment that affects our daily routine leaving us sick and irritated.   Common cold or flu is caused by viral infection.  Fever, Sneezing, runny nose, sore throat, headache, body ache, fatigue and burning nasal membranes are the symptoms of common cold. Image source: Creative Commons Common cold is one of the major symptom seen in almost all the respiratory tract infections caused by viruses. Sometimes it differs from flu which has distinct difference and severity from a common cold. Generally, common cold is a self-limited disease which goes away on its own without any medications. Using over-the-counter drugs can relieve the symptoms of common cold and relax a person. Causes of common cold: Common cold is mostly caused by viruses. There are many viruses that cause common cold in humans but the rh...