SECTION IX. 

 DISEASES OF THE NERVOUS SYSTEM. 



What is delirium ? 



The term delirium is difficult to define, on account of its being 

 so variously applied; in veterinary practice it is usually considered 

 to be incoherent acts of an animal. 



Define hyperesthesia. 



This is a condition characterized by an exalted excitability in 

 the various parts of the sensory apparatus, that is, increased 

 sensation. 



What is hyperalgesia? 



It is a condition characterized by that form of pain of a part 

 designated as tenderness. 



What is meant by paresthesia ? 



By this is meant those sensations which arise centrally in the- 

 nerve-fibres or centres, and are sent outward toward the surface or 

 periphery and recognized by consciousness; examples are pain,, 

 coldness, heat, constriction, distention, malposition, etc. 



Define anaesthesia. 



This is an interruption in the conducting power of sensory 

 nerves characterized by a partial or complete loss of sensibility in 

 areas of the skin. 



COMA. 

 Define coma. 



Coma is a functional condition characterized by a state of un- 

 consciousness from which the patient cannot be aroused, or is 

 aroused with some difficulty. 



What is meant by carus? 



Cams signifies that state from which the patient cannot be 

 aroused, and is called profound coma. 



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