A cold is a contagious viral infection that principally involves the upper-respiratory passages, the nose, throat, sinuses, ears, Eustachian tubes, trachea, larynx, and bronchial tubes.
Causes of Cold, Common
Any of the 100 different virus particles spread through the air or from person-to-person contact, especially hand-shaking, can lead to the development of the common cold.
Signs and Symptoms of Cold, Common
Cold symptoms are quite well known. They include runny or stuffy nose, watery to thick yellow nasal discharge, sore throat, hoarseness, cough that produces little or no sputum, low fever, fatigue, watering eyes and appetite loss.
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Medical Content Last Updated on 07/12/2008
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