Chronic bronchitis on a 1 year old boy?

Unusual: Consult with pulmonologist, about congenital diseases or lungs malformations.

Multiple causes: If your son has had multiple infections of his lungs in the last one year, he requires additional evaluation. Environmental smoke and pollution, the presence of allergies/asthma can be associated w chronic respiratory infections. In addition, reflux and aspiration, retained foreign body and immune defects are other causes to consider. Cystic fibrosis is less common in asia, but possible.