An estimated 6 million children in the US have<unk> 
In 2007,<unk>  lead to >700,000 ED visits<unk>  is part of the atopy triad<unk> , allergies, eczema)
A history of eczema or allergies maybe helpful in making a new diagnosis of<unk> 
Wheezing in an infant is more often bronchiolitis than<unk> 
Viral URI associated with copious rhinorrea, allergen exposure, and respiratory irritants (i.e. smoke) are common precipitants for pediatric<unk>  exacerbations
Acute asthma exacerbation 
Upper Airway diseases
COPD exacerbation
Allergic rhinitis and sinusitis
Acute chest syndrome
Large Airway Obstruction
Acute dyspnea
Foreign body aspiration