Source : WordNet®

SSPE
     n : a rare chronic progressive encephalitis caused by the
         measles virus and occurring primarily in children and
         young adults; death usually occurs within three years;
         characterized by primary measles infection before the age
         of two years [syn: {subacute sclerosing panencephalitis},
          {inclusion body encephalitis}, {subacute inclusion body
         encephalitis}, {sclerosing leukoencephalitis}, {subacute
         sclerosing leukoencephalitis}, {Bosin's disease}, {Dawson's
         encephalitis}, {Van Bogaert encephalitis}]