SECTION III. 



CLASSIFICATION OF DISEASES. 



How are diseases classified ? 



They are classified into General Diseases and Local Dis- 

 eases. 



How are general diseases subdivided ? 



They are subdivided into I. Fevee; II. Blood Diseases; 

 III. Infectious Diseases ; IV. Constitutional Diseases. 



What are included under the head of local diseases ? 



The diseases of the various organs or systems which are not 

 included under the head of general diseases. 



I. GENERAL DISEASES. 



FEVEK. 

 Define fever. 



Fever may be defined to be an altered condition of the body 

 heat, or a combination of disturbances in the physiological pro- 

 cesses of the body, whose most frequent and outward sign is the 

 rise in temperature. 



How is the heat of the body maintained ? 



First, Heat must be produced or introduced into the body; 

 secondly, it must be discharged from the system; and, thirdly, a 

 balancing process is required to regulate the same, which is the 

 nervous system. 



How are fevers characterized ? 



1. By the temperature being elevated. 



2. By an increase in the circulation. 



3. By a change in the secretions of the body. 



4. By a wasting of the tissues of the body. 



What kinds of fevers are there ? 



There may be said to be two kinds — essential fever and symp- 

 tomatic fever. 



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