gog Dourme. 



occurs freqiieutlv sometimes in spite of its long existence with- 

 out leading to a demonstrable atrophy of the posterior muscles. 

 The sphincter muscles of the anus and the bladder are not 

 paralvzed. 



The superficial reflexes are increased over the region of 

 the hyperesthesia, but they become weaker after the appearance 

 of the muscular paralysis and finally disappear entirely. The 

 tendinous reflexes, corresponding to the affected nerves, are 

 diminished from the beginning or entirely absent, especially 

 the patellar reflex. The electrical irritability of the nerves 

 and muscles is likewise reduced in the regions of the paralysis 

 or a partial and even a total degeneration reaction may be 

 established (^larek). 



The s^^nptoms of paralysis diminish sometimes consider- 

 ably after several weeks and may disappear entirely, even 



i"ig. 147. Lhjiiri>it. Parapare:-!^ ill ail auci. icM Lii.iK-. ^ "■"■'i""^t. i 



when a degeneration reaction had previously been ascertained. 

 In other cases they become more aggravated, the withering 

 muscles become markedly atrophied, and finally the paralysis 

 of the hind parts reaches such a degree that the animals are 

 no longer capable of rising from the ground. 



Frequently affections of certain joints and tendons become 

 associated witli the nervous spnptoms. The hock joint, more 

 rarely the tarsal joints, or some articulations of the front legs, 

 swell from day to day, together with the corresponding 

 tendinous sheaths. The swellings are produced by the ac- 

 cumulation of a large quantity of fluid in the synovial cap- 

 sule or in the tendinous sheath, but at the same time there 

 are no inflammatory s^^Ilptoms perceptible. On palpation they 



