CHAPTER XX 

 INFLAMMATION AND PROCESSES OF REPAIR 



INFLAMMATION 



INFLAMMATION is essentially a local tissue degenera- 

 tion combined with exudation from the blood-vessels, 

 caused by some injurious agency, with which is associ- 

 ated, earlier or later, tissue proliferation, leading to 

 regeneration or hypertrophy (Ziegler). 



The four cardinal symptoms of inflammation, as 

 designated by Celsus, are: Color (heat), rubor (redness), 

 tumor (swelling), dolor (pain), to which was added later 

 functio Icesa (altered function). 



Causes of Inflammation. Traumatic, as blows and 

 mechanical injuries. Chemical , as stings of insects, ivy- 

 poisoning, acid injuries, etc. Thermal, as heat and cold. 

 Specific, as bacteria erysipelas, peritonitis, etc. 



CONSIDERATION OF THE PROCESSES OF INFLAMMATION 



Hyperemia. The onset of inflammation is marked by 

 dilation of the blood-vessels and a quickening of the 

 blood-current, which accounts for the heat and redness. 

 This is quickly followed by slowing of the current and 

 exudation. 



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