WordNet sense 1 (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):

SSPE, subacute sclerosing panencephalitis, Bosin's disease, inclusion body encephalitis, sclerosing leukoencephalitis, subacute inclusion body encephalitis, subacute sclerosing leukoencephalitis, Van Bogaert encephalitis