those  found   in   lesions  P  l-   median   plantar;

of  the  peripheral  nerves  \  *%£^  ^^  i

and     of     the     posterior  5,  saphenous ;    6,  common

roots.      At    times    func-  peroneal  ;   7,  anterior  fem-

tional  derangements  of  ora'  and  obturator ;  8,  lat-

,     °  eral    femoral  ;     9,    gemto-

the  central  nervous  sys-   femoral,
tem     may     be    accom-       Adapted  from  Morris,
panied  by  anesthesia  of

slight  extent.  Figure  2  illustrates  some  of  the
kinds  of  anesthesias  from  spinal  cord  and  brain
lesions.
The  most  common  diseases  in  which  these
forms  of  anesthesia  occur  are:  injuries  to  or
inflammation  of  the  brain  and  its  membranes,
disease  of  the  spinal  cord,  posterior  columns
and  horns,  hysteria  and  the  traumatic  neuroses.
