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