Source : WordNet®

subacute sclerosing panencephalitis
     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: {SSPE}, {inclusion body encephalitis},
          {subacute inclusion body encephalitis}, {sclerosing
         leukoencephalitis}, {subacute sclerosing
         leukoencephalitis}, {Bosin's disease}, {Dawson's
         encephalitis}, {Van Bogaert encephalitis}]