''Capillaria aerophila'' is associated with [[Respiratory Parasitic Infections - Pathology#Capillaria aerophila|respiratory disease]] of cats and dogs. The worm can be found in the [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|nasal passages]], [[Paranasal Sinuses Inflammatory - Pathology#Infectious causes of sinusitis|sinuses]], [[Trachea Inflammatory - Pathology#Infectious causes of traacheitis|trachea]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchi]]. The presence of the worms causes a mild catarrhal inflammation and can cause coughing in dogs but not in all cases. In heavy infestation may cause obstruction of the lumen of airways and may develop into secondary [[Lungs Inflammatory - Pathology#Bronchopneumonia|bronchopneumonia]] | ''Capillaria aerophila'' is associated with [[Respiratory Parasitic Infections - Pathology#Capillaria aerophila|respiratory disease]] of cats and dogs. The worm can be found in the [[Nasal Cavity Inflammatory - Pathology#Infectious causes of rhinitis|nasal passages]], [[Paranasal Sinuses Inflammatory - Pathology#Infectious causes of sinusitis|sinuses]], [[Trachea Inflammatory - Pathology#Infectious causes of traacheitis|trachea]] and [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchi]]. The presence of the worms causes a mild catarrhal inflammation and can cause coughing in dogs but not in all cases. In heavy infestation may cause obstruction of the lumen of airways and may develop into secondary [[Lungs Inflammatory - Pathology#Bronchopneumonia|bronchopneumonia]] |