Croup

Choanal atresia

Laryngomalacia

Allergic rhinitis

Nasal polyps

Upper respiratory tract infection

Sinusitis

Laryngitis

Retropharyngeal and peritonsillar abscesses

Bacterial epiglottitis

Nasopharyngeal carcinoma

Tracheoesophageal fistula

Congenital pulmonary airway malformation

Pulmonary hypoplasia

Neonatal respiratory distress syndrome

Transient tachypnea of the newborn

Meconium aspiration syndrome

Apnea of prematurity

Sudden infant death syndrome

Acute respiratory distress syndrome

Pulmonary changes at high altitude and altitude sickness

Decompression sickness

Cyanide poisoning

Methemoglobinemia

Emphysema

Chronic bronchitis

Asthma

Cystic fibrosis

Bronchiectasis

Alpha 1-antitrypsin deficiency

Restrictive lung diseases

Sarcoidosis

Idiopathic pulmonary fibrosis

Hypersensitivity pneumonitis

Pneumonia

Croup