342 



VETERINARY I'ATIIOLOGY. 



Intermittent fever is the name applied to that type in which 

 there are periodic variations, the temperature becoming normal 

 between the fe\-er periods. Intermittent fever is observed in 

 equine pernicious anemia. 



Fever may also be classified as : 1st. Sthenic. 2nd. As- 

 thenic. Sthenic fever is active, vigorous and destructive. As- 

 thenic le^•cr has an insidious onset and is slow in action. 



Fig. i;hi. — l.intiiiiiiius ii-\>v charl sli" 



filiulis, but a (-'uliLJauuus 



Symptoms. — h>\'cr is usuall\- ushered in bv a chill because 

 of the coiisirictii iu nf cutaneous A-essels which tlius diminishes 

 ihe temperature i if the skin and [iroiluces the sensation of chill- 

 ing. There are diminished secretii lus, as jierspiration, saliva and 

 urine. In I'mg cimtimied fe\X'r there is ci insti]iation because of 

 absrirptirm df fluid from the intestines. The ]inlse rate is usualh' 



Fie 



l;il. — Kfinittent fever ehiirt. sliriwin^ variaUtms 

 always above normal. 



ill "\^'hiLli thi.. trmiJoralurc 



increased and its character is changed because of the action of 

 katabolic products on the nerve centers. Respiration is increased 

 probably because of an effort to eliminate large quantities of air 

 and waste material, and thus there is a tendency for the tem- 

 perature to be diminished. The afifected animal is more or less 

 nerviius and restless. 



