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MENTAL AND BEHAVIOURAL DETERIORATION OF CHILDREN WITH EPILEPSY AND CSWS: ACQURIED EPILEPTIC FRONTAL SYNDROME

Four children with 'epilepsy and continuous spike‐wave sleep' syndrome and mental and behavioural regression were followed prospectively with neuropsychological tests, behavioural questionnaires and sleep EEG performed at regular intervals between 19': and four years of age. The children showed a pattern of behavioural and cognitive disturbances similar to that found in some developmental autistic‐like disorders, but also in adult frontal syndrome. Deterioration was probably due to an unusual long‐standing epileptic dysfunction involving the frontal lobes. The process is potentially reversible and seems to be the same as postulated for acquired epileptic aphasia, but in a different localization.