Chronic bronchitis in children.

Chronic bronchitis in childhood is a diverse group of illnesses with pathophysiology differing markedly from the adult condition. Airway disease in children is very common and results in significant and increasing morbidity and mortality. Chronic abnormalities in the bronchioles secondary to infection and morbidity of the bronchi secondary to neonatal problems are unique to children. Because more of these children are reaching adult life each day, these conditions are highlighted. Differential diagnosis, clinical evaluation, and recent treatment advances are discussed.