210 



Pliarynij'itis. 



arytenoid cartilages. In sueli eases respiration becomes difficult. 

 Deep inspiration after each congii, and later on every inspira- 

 tory etl^'ort, is accompanied by a snorting or whistling sound. 

 The animal has attacks of dyspnea and the latter may become 

 fatal. These respiratory disturbances are particularly well 

 marked and common in the hog. Elevation of the temperature 

 exists in the majority of cases. In pharyngitis following a cold 

 or an infection, fever is usuall}' present from the start and the 

 latter mav precede the other s^anptoms for one to two days 

 (Fig. 32)." 



Pharyngitis from traumatic or chemical causes usually be- 

 gins without an elevation of temperature, and fever only ap- 

 pears later after ulceration or pus formation has occurred. 

 An elevation of temperature recurring during the later course 

 of the disease points to a penetration of the process into the 



32. Fever curve in a case of pliaryngitis in a horse. 



deeper tissues. In these cases the fever then generally per- 

 sists until the shedding of the necrotic tissues or until the spon- 

 taneous or artificial opening of an abscess, when the tempera- 

 ture usually goes down within one to two days. 



The appetite may be permanently retained in those cases 

 which are not accompanied by fever at all or only by a mod- 

 erate elevation of temperature ; but even in these cases the nutri- 

 tion usually suffers in consequence of the difficult deglutition. 



The urine, in insufficient nutrition assumes an acid reaction, 

 even in herbivora, and it may be quite thin for days. In- 

 dican is increased in ichorous necrosis of tissues. Meyer dem- 

 onstrated an increase in the number of leucocytes of the blood 

 in acute pharjmgitis. 



The sjauptoms of chronic pharyngitis are in nature similar 

 to those descril)ed above; they are, however, milder in char- 

 acter. Deglutition is difficult but not impossible; the pharyn- 



