A cough is a sudden, often repetitive, spasmodic contraction of the thoracic cavity, resulting in violent release of air from the lungs, and usually accompanied by a distinctive sound. Coughs in children are common, and usually accompany many of the normal childhood illnesses. A cough that continues for several days, or increases in severity, should be immediately checked by a physician to rule out other diseases. It is a symptom of an underlying disease or other medical problem that most peo

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