Symptoms. 



753 



drops. Any increase of intra-abdominal pressure or move- 

 ment causes larger amounts to escape. Pressure on the bladder 

 causes a larger quantity to be ejected in a stream and when 

 the pressure is removed the stream ceases. In this case both 

 the sphincter and the detrusor urinae are paralyzed. In many 

 cases there is difficulty of micturition due to paralysis of the 

 detrusor urinae. The disturbances of micturition may in time 

 cause cystitis or may lead to the formation of calculi, which 

 may prove fatal. 



There are no sensory disturbances and the appetite re- 

 mains normal. It is only when large quantities of feces collect 



Fig, 112. 



Fio-. 112. 



Fig. 112. Combined paralysis of the tail and spliincters. The area marked with 

 horizontal lines was in a condition of anesthesia, while that marked with vertical 

 lines was markedly hyperesthetic. The anus was open and packed with feces. The 



specimens shown in figs. 110-111 were obtained from this horse. 



Fig. 113. Combined paralysis of the tail and sphincters. There was complete 



anesthesia in the shaded area. The anus was relaxed. 



in the rectum that the animals may show slight symptoms of 

 colic and these disappear when the feces are removed. If the 

 masses of feces are not removed the obstruction may be a 

 source of danger. 



As a rule there are no motor disturbances, but in excep- 

 tional cases in which the process involves the anterior sacral 

 and the posterior lumbar nerves there are symptoms of lumbar 

 paralysis (Hutyra & Marek). 



