SECTION II 



DISEASES OF THE UPPER RESPIRATORY 

 PASSAGES 



Simple Nasal Catarrh, Rhinitis, Coryza, Cold in the 



Head 



THIS condition, as the name implies, consists of 

 an inflammation of the nasal mucous (schneid- 

 erian) membrane. However, it sometimes extends 

 to the mucous membrane of the sinuses of the head. 



Cause. — Cold, infection and the inhalation of ir- 

 ritant gases and other substances, for example, 

 chemical fumes, smoke, dust or pollen are frequent 

 causes of this condition. 



Symptoms. — The first symptom noticed is sneez- 

 ing and pruritus of the nose, the animal trying to 

 alleviate the itching by pawing at the nose or trying 

 to rub it against something. The nose is hot and 

 dry and the nasal mucous membrane hyperemic. In 

 from twelve to twenty-four hours exudatiop from 

 the mucous membrane takes place and a thin and 

 watery discharge is established. This later becomes 

 thicker and more tenacious, taking on a purulent 

 character. This discharge must be differentiated 

 from that of canine distemper, which is more sticky 

 and of a greenish-yellow color, besides being nearly 

 always of an offensive odor and often streaked with 

 blood. The duration of an attack of nasal catarrh 

 is usually about one week. 



Treatment. — Nasal catarrh should always receive 

 treatment, since it opens the gates, as it were, to 

 other infectious agents; and, furthermore, the 



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