A contagious viral infection of the upper-respiratory passages including the nose, throat, sinuses, ears, eustachian tubes, trachea, larynx, and bronchial tubes.
Nasal discharge is watery at first, then becomes thick and yellow.
Cough that produces little or no sputum. Children attending school or day care. Household member who has cold. Crowded or unsanitary living conditions. Infection may be facilitated by stress, fatigue or allergic disorders.