Croup.
D001991:Bronchitis / Q000150:complications; D002675:Child, Preschool; D003440:Croup / Q000209:etiology; D004825:Epiglottis; D005260:Female; D006801:Humans; D007223:Infant; D007827:Laryngitis / Q000150:complications / Q000209:etiology; D008297:Male; D012130:Respiratory Hypersensitivity / Q000150:complications; D014136:Tracheitis / Q000150:complications