title: Tuberous sclerosis: long-term follow-up and longitudinal electroencephalographic study.
abstract: We analyzed 320 electroencephalograms done on 60 patients having tuberous sclerosis. The main features in EEGs were diffuse slowing in the background activity, slow spike-wave discharges, focal and multifocal spike discharges, and amplitude asymmetries. No significant changes occurred in EEGs during the follow-up. No characteristic pattern was identified for diagnosing TS. Severe abnormalities were seen in patients who had infantile spasms and frequent seizures, and who were mentally retarded. Slow spike-wave abnormality was less frequent in patients who had mild mental retardation and few seizures. The pathological findings did not offer any clue to the frequently recorded EEG abnormalities.
mesh_terms: D000293:Adolescent; D000328:Adult; D002540:Cerebral Cortex / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography; D004827:Epilepsy / Q000175:diagnosis; D005071:Evoked Potentials; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D014402:Tuberous Sclerosis / Q000175:diagnosis* / Q000503:physiopathology