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
Asthma
Viral bronchiolitis
Cystic Fibrosis<unk> 
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
Asthma
Viral bronchiolitis
Cystic Fibrosis<unk> 
Congenital heart disease or other cardiac disease
GERD
Anaphylaxis
Airway obstruction
Anaphylaxis
Angioedema
Aspirated foreign body
Asthma exacerbation
Anaphylaxis
Angioedema
Aspirated foreign body
Asthma exacerbation
Structural<unk> 
Choanal atresia
Neoplasm
Subglottic stenosis
Tracheoesophageal fistula
Tracheomalacia
Spontaneous pneumothorax<unk> 
Choanal atresia
Neoplasm
Subglottic stenosis
Tracheoesophageal fistula
Tracheomalacia
Spontaneous pneumothorax
Infectious
Bacterial tracheitis
Bronchiolitis (peds), URI
Croup
Epiglottitis
Pertussis
Pneumonia
Cystic fibrosis exacerbation
Bacterial tracheitis
Bronchiolitis (peds), URI
Croup
Epiglottitis
Pertussis
Pneumonia
Cystic fibrosis exacerbation
Trauma
Rib fractures
Flail chest
Traumatic pneumothorax
Pulmonary contusion
Rib fractures
Flail chest
Traumatic pneumothorax
Pulmonary contusion
Other
Inhalation exposure
Meconium aspiration syndrome
Pulmonary edema
Pulmonary hypertension, cor pulmonale
Respiratory distress syndrome
Inhalation exposure
Meconium aspiration syndrome
Pulmonary edema
Pulmonary hypertension, cor pulmonale
Respiratory distress syndrome
Congenital heart disease
Vascular ring
Cardiac tamponade
Congestive Heart Failure (peds)
Myocarditis (peds)
Normal neonatal periodic breathing (misinterpreted by caregivers as abnormal)
Brief resolved unexplained event
Anemia
Abdominal distension (e.g. SBO, liver failure
Neonatal abstinence syndrome
Decreased perfusion states
Pediatric shock
Sepsis (peds)
Dehydration (peds)
Metabolic acidosis
Diabetic ketoacidosis (peds)
Inborn errors of metabolism
Salicylate toxicity
CO Poisoning
Diaphragm injury
Renal Failure
Electrolyte abnormalities
Organophosphate toxicity
Tick paralysis
Fever (Peds)
Panic attack
Porphyria
Pediatric shock
Sepsis (peds)
Dehydration (peds)
Diabetic ketoacidosis (peds)
Inborn errors of metabolism
Salicylate toxicity
Bronchopulmonary dysplasia
Upper Airway diseases
Tracheomalacia
Allergic rhinitis and sinusitis
Respiratory distress syndrome
Large Airway Obstruction
Transient tachypnea of the newborn
Foreign body aspiration