124 DISEASES OF 



In this place it will probably be a convenience to the 

 stock-owner if I say a few words on 



POLYUREA PROFUSE STALING OR PROFUSE 

 URINATION. Although not strictly due to disease of 

 the kidneys, the most prominent symptom that of pas- 

 sing a large quantity of urine will lead the horse own- 

 er to look for a description of this disease under the 

 heading of "Diseases of the Urinary Organs." 



Causes. The real cause or causes of the disordered 

 condition of the system in this disease is not well under- 

 stood. A functional derangement of the nervous sys- 

 tem, or a part of it, seems in some cases to be the lead- 

 ing cause of excessive urination. The condition of the 

 blood is frequently abnormal. In other cases we cer- 

 tainly have functional derangement of the digestive 

 system. It is sometimes present as a complication of 

 pneumonia or other lung disease. It is much more com- 

 mon in some localities and in some seasons than in others, 

 which would seem to show that either local climatic or 

 food influences have a great deal to do with its causa- 

 tion. It is said that improperly cured, or musty hay 

 and grain are active causes; we know that several cases 

 will sometimes occur on the same farm. 



Symptoms. The one prominent symptom of course 

 is that the animal passes an excessive quantity of urine 

 and has consequently excessive thirst. This is often pre- 

 ceeded by a dull feeling. The animal doesn't drive up 

 as well as usual; there may or may not be a loss of ap- 

 petite, but it will lose flesh rapidly, and in a day or two 

 will appear to be unusually weak; when in this condi- 

 tion it is peculiarly susceptible to colds, and lung fever 

 is very easily developed. The urine is usually clear 

 like water. 



