respiratory system disease +

actinobacillosis
actinomycosis
asphyxia neonatorum
asthma, nasal polyps, and aspirin intolerance
croup
influenza +
lower respiratory tract disease +
respiratory system benign neoplasm +
respiratory system cancer +

acute laryngopharyngitis
adenoid hypertrophy
adenoiditis
common cold
epiglottitis
laryngeal disease +
laryngotracheitis
mucocutaneous leishmaniasis
nasopharyngeal disease +
nose disease +
pharyngitis
scarlet fever
tonsillitis
tracheal disease +
uvulitis