NEURO-RECURRENCES IN SYPHILIS 



247 



and the consequent liberation of their toxins can bring about similar 

 phenomena. Usually all these symptoms pass off promptly. 



Somewhat less transient are affections of different nerves, which have 

 been observed in cases of recent syphilis a short time after injections 

 of salvarsan. At first there was some doubt whether these injuries were 

 due to the action of the new remedy or to the original specific infection. 

 In most instances, they have proved to be of luetic origin and have 

 disappeared under further specific treatment. Thus one dealt not with 

 a " neuro tropic " action of the salvarsan, but with the so-called "neuro 

 rezidive" or neuro-recurrences of syphilis. Benario has demonstrated by 

 the following careful statistics that such " rezidive" appear almost as 

 frequently in the early stages of the infection when treated by mercury 

 alone as when salvarsan is employed. 



"NEURO REZIDIVE" WITH SALVARSAN. 194 CASES. 



' NEURO REZIDIVE" WITH MERCURY. SAME CLASS OF CASES AND DURING 

 SAME INTERVAL. 122 CASES. 



These paralyses are due to isolated spirochetes lying inaccessible in 

 the nerve fibers. Thus, probably, they escape the action of the injected 



