PREVENTION, SYMPTOMS AND TREATMENT 2 Jl 



occasionally in dogs, pigs, cattle and sheep. At times it is apparently 

 a pure neurosis, and at other times symptomatic of cerebral con- 

 gestion from pressure of harness on neck or from too short over- 

 draw check, or from chronic heart or lung disease, especially when 

 the animal is overheated. It may also be a symptom of cerebral 

 anemia (see p. 20) or general anemia. Finally, peripheral irrita- 

 tion originating in strong reflected light upon the eyes, in foreign 

 bodies in the ears, or perhaps in indigestion, may reflexly induce 

 vertigo. It occurs in horses more often during exercise (wherein 

 it differs from epilepsy) and when driven rather than under the 

 saddle. 



Symptoms. — An attack lasts in the horse a minute or two. 

 The animal slows, stops, sways, staggers, shakes and nods the head, 

 sweats and leans against a support and sometimes falls. There are 

 unconsciousness, dilated pupils, rapid pulse and breathing. Re- 

 covery is quick. 



Treatment consists in covering the eyes, removing harness 

 about the neck and walking the animal about. Cold water thrown 

 over the head will also excite consciousness. If any of the causes 

 enumerated can be discovered, their removal should be attempted. 

 Heart disease must be treated. Animals subject to megrims when 

 driven may sometimes be ridden without danger of an attack. 

 Certain blinders appear to favor the disorder. Regular and hard 

 exercise is sometimes remedial. It is well to give an aloes physic 

 ball after a seizure. 



Warbles — Hypodermosis. 



This is a condition very commonly seen in catttle in February 

 and March and consists of a number of roundish swellings, five to 

 twenty in number, appearing upon the back, lumbar region, shoul- 

 ders, ribs and quarters; less often on the chest, belly and thighs. 

 The swellings are frequently about as large as the closed hand and 

 involve the connective tissue under the skin. They are caused by 



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