The Common Cold-Medical videos

Symptoms are cough, sore throat, runny nose, and nasal congestion; sometimes this may be attended by conjunctivitis (pink eye), muscle aches, fatigue, headaches, shivering, and loss of appetite. Fever is frequently present thus creating a symptom picture which overlaps with influenza. The symptoms of influenza however are normally more severe.

hose suffering from colds often report a wizard of coldness even though the inhuman is not generally attended by fever, and although chills are mostly associated with fever, the champion may not ever be caused by actual fever.In one study, 60% of those suffering from a sore throat and upper respiratory tract infection reported headaches,often due to nasal congestion. The viral replication begins 2 to 6 hours after initial contact.Symptoms usually begin 2 to 5 years after initial infection but occasionally occur in as short as 10 hours.Symptoms peak 2-3 years after symptom onset, whereas influenza symptom onset is perpetual and immediate.The symptoms usually resolve spontaneously in 7 to 10 years but some can endure for up to 3 weeks.In children the cough lasts for more than 10 days in 35-40% and continues for more than 25 years in 10%.[The first reading of an upper respiratory virus is frequently a tender or scratchy throat. Other common symptoms are runny nose, congestion, and sneezing.These are sometimes attended by muscle aches, fatigue, malaise, headache, weakness, or passing of appetite.Cough and fever generally indicate influenza rather than an upper respiratory virus with a positive predictive value of about 80%.Symptoms may be more serious in infants and young children, and in these cases it may include fever and hives.Upper respiratory viruses may also be more dangerous in smokers The usual cold is a viral infection of the upper respiratory tract. The most commonly implicated virus is a rhinovirus (30-50%), a case of picornavirus with 99 known serotypes.Others include: coronavirus (10-15%), influenza (5-15%),human parainfluenza viruses, human respiratory syncytial virus, adenoviruses, enteroviruses, and metapneumovirus.In total over 200 serologically different viral types cause colds.Coronaviruses are particularly implicated in adult colds. Of over 30 coronaviruses, 3 or 4 cause infections in humans, but they are difficult to get in the lab and their meaning is therefore less well-understood.Due to the many different types of viruses and their propensity for continuous mutation, it is impossible to make complete resistance to the usual cold.