Progressive rubella panencephalitis. Follow-up EEG study of a case.

Progressive rubella panencephalitis is a very rare slow virus disease of the nervous system. The authors present a case, concerning a young man, aged 20 years, died 11 months after the onset of the disease. The following peculiarities of the case are emphasized: 1) the clinical symptomatology and the evolution (myoclonus, lack of cerebellar impairment) could suggest the diagnosis of SSPE; 2) the EEG recordings showed epileptiform abnormalities, long latency diffuse periodic complexes and--during interferon therapy and simultaneously with a temporary clinical improvement--the appearance of short latency anterior periodic complexes.