Everything  giving  rise  to  hypersemia  of  the  skin  will  in  some
constitutions  excite  eczema.  Constitutionally  the  cause  may  be
traced  to  disordered  digestion,  dentition,  painful  menstruation,
pregnancy,  nervous  disturbances.  Treatment  is  therefore  consti-
tutional and  local ;  the  former  with  reference  to  any  error  recog-
nised ;  the  latter  soothing  in  the  acute,  stimulant  in  the  chronic
forms.  B.  Herpes,  Varieties  :  labialis,  prceptUicUis,  zoster  iris.  In
the  first  there  is  a  patch  of  inflamed  vesicles.  In  zosUtr^  zona,  or
shingle,  there  is  a  belt  of  vesicles  round  half  the  body.  Herpes
iris  occurs  on  the  forehead  in  connection  with  neuralgia.  The
vesicles  cause  burning,  tingling,  smarting,  and  on  the  forehead
stinging  pain,  often  severe,  and  where  a  mark  may  be  left.
Ccmses  not  well-defined.  Treatment, — Zinc  lotion,  lime  water,
anodyne  applications ;  aperients  and  salines.  0.  Pemphigus,
pompholyx,  or  hlebs.  Bullae  containing  serum  form  on  the  skin,
burst,  dry  up,  and  produce  crusts.  Most  frequent  in  teething
children.  May  occur  without  any  assignable  cause,  except
general  bad  health.  TreatmerU, — Tonics,  puncturing  the  fully
formed  buUee,  and  dressing  with  zinc  or  tar  ointment.  D.
