Acute rhinopharyngitis or acute nasopharyngitis, usually called a common cold, is an infectious viral disease of the upper airways, principally caused by picornaviruses (including rhinoviruses) or coronaviruses.
The principal symptoms of a common cold are rhinitis (sneezing, cough, congestion and flow of nasal mucus), pharyngitis, conjunctivitis, aching muscles, tiredness and headache, or even fever and loss of appetite.