Woman with symptoms of the<unk>  The typical symptoms of a<unk>  include cough, runny nose, sneezing, nasal congestion, and a sore throat, sometimes accompanied by muscle ache, fatigue, headache, and loss of appetite. A sore throat is present in about 40% of cases, a cough in about 50%, and muscle ache likewise in about 50%. In adults, a fever is generally not present but it is<unk>  in infants and young children. The cough is usually mild compared to that accompanying influenza. While a cough and a fever indicate a higher likelihood of influenza in adults, a great deal of similarity exists between these two conditions. A number of the viruses that cause the<unk>  may also result in asymptomatic infections. The color of the mucus or nasal secretion may vary from clear to yellow to green and does not indicate the class of agent causing the infection. Progression A<unk>  usually begins with fatigue, a feeling of being chilled, sneezing, and a headache, followed in a couple of days by a runny nose and cough. Symptoms may begin within sixteen hours of exposure and typically peak two to four days after onset. They usually resolve in seven to ten days, but some can last for up to three weeks. The average duration of cough is eighteen days and in some cases people develop a post-viral cough which can linger after the infection is gone. In children, the cough lasts for more than ten days in 35–40% of cases and continues for more than 25 days in 10%.
Common cold
Whooping cough
Pontiac fever
Allergic rhinitis
Polymer fume fever
Sinusitis
Plague 
Bronchitis