Upper Airway diseases
Allergic rhinitis and sinusitis
Large Airway Obstruction
Foreign body aspiration
Vascular ring or laryngeal webs
Laryngotracheomalacia
Enlarged lymph node or tumor
Vocal cord dysfunction
Small Airway Obstruction<unk> 
Viral bronchiolitis
Cystic Fibrosis
Bronchopulmonary dysplasia
Congenital heart disease or other cardiac disease
Other causes
GERD
Anaphylaxis
Allergic rhinitis and sinusitis
Foreign body aspiration
Vascular ring or laryngeal webs
Laryngotracheomalacia
Enlarged lymph node or tumor
Vocal cord dysfunction<unk> 
Viral bronchiolitis
Cystic Fibrosis
Bronchopulmonary dysplasia
Congenital heart disease or other cardiac disease
GERD
Anaphylaxis
Acute asthma exacerbation 
Upper Airway diseases
COPD exacerbation
Allergic rhinitis and sinusitis
Acute chest syndrome
Large Airway Obstruction
Acute dyspnea
Foreign body aspiration