Source : WordNet®

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