the  right  side  :ire  equiill}'  apt  to  be  the  scut  of  i)aiii.  The  spccia,!  senses
become  Jibnormally  iicute.  The  temi)onil  arteries  are  swollen  on  the
artected  side  and  feel  like  whip-eords  beneath  the  skin.  The  patient
begins  to  experience  pulsations  within  the  head,  which  send  shooting
pains  with  them  of  a  severe  character.  The  region  of  the  stomach  often
feels  unpleasantly,  as  if  distended  with  gas.  Light  becomes  painful,  and
the  eye  of  the  affected  side  gradually  changes  in  its  appearance.  It  is
usually  dull,  retracted,  and  not  widely  opened.  The  pupil  may  be
slightly  dilated.
The  seat  of  pain  may  be  at  first  in  the  occipital  region  or  over
the  forehead  or  temple ;  but  it  tends  to  spread  gradually  over  the
affected  side  as  the  paroxism  increases  in  severity.  The  cervical
region  of  the  spine  is  apt  to  be  more  or  less  affected  with  an  aching
sensation.
Toward  the  close  of  the  day  the  patient  is  obliged  to  give  np  busi-
ness and  retire  to  absolute  quiet  and  a  dimly-lighted  room,  provided  the
attack  is  a  severe  and  typical  one.  The  pain  becomes  more  and  more
intense  until  it  culminates  in  vomiting.  This  often  closes  the  attack  and
the  patient  falls  into  a  heav}'  sleep  closel}^  resembling  that  wdiich  follows
an  epileptic  seizure.  Several  fits  of  vomiting  are  generally  experienced,
accompanied  by  retching,  sweating,  pallor  and  extreme  physical  prostra-
tion, before  entire  relief  from  pain  comes.
