DISEASES OF RESPIRATORY TRACT 



ACUTE CATARRH (C CLT) IN HEAD, ACUTE CORYZA) 



Definition. — Acute fatiinh, or cold in the head, is a condition 

 due to inflammation of thi'3 lining membrane of the nose and the 

 accessory cavities cu:mect«|'d with the nose. 



Causes. — Cold in the head is seen most frequently in the winter 

 and spring seasons. It is most commonly due to exposure to wet 

 and cold. This is especially likely to cause cold in the head if the 

 animal be overheated at f he time. For instance, in animals that 

 are allowed to burrow under straw-stacks or manure piles, or are 

 kept in sheds which are co'vered over with a straw-stack or manure 

 pile, catarrh of the head iw ver\' common. The hogs, when allowed 

 to sleep in such q uarters as these, come out in the morning with 

 bodies overheated, and a?^ soon as the chill winter air strikes them 

 they begin to shiver and fthake. In a few hours an acute catarrh of 

 the head has developed. Another cause for cold in the head is the 

 inhalation of irritating vapors. This very commonly occurs when 

 animals are allowed to sleep under a manure pile. The ammoniacal 

 odor that is formed by the rotting manure is very irritating to the 

 nose and will set up a severe inflammation. Foreign bodies in the 

 nose are another frequent cause of catarrh. Animals that are 

 kept in overcrowded and poorh ventilated sheds are also com- 

 monly subject to attacks of catarrh during the winter season. The 

 overheating, together with the exposure to draft, is bound to de- 

 velop a severe cold. 



Symptoms. — The first symptom of the onset of a cold in the 

 head is repeated sneezing. Fc flowing this the animal will be noted 

 to be a little dull and somewhat inactive. At this time there will 

 be found a slight rise in the temperature, which in severe cases may 

 amount to two or three degrees. The eyes are red and inflamed, 

 and at this time the lining memb-'ane of the nose is also red and 

 swollen. 



