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  • Title: Cognitive and behavioural findings in children with frontal lobe epilepsy.
    Author: Braakman HM, Ijff DM, Vaessen MJ, Debeij-van Hall MH, Hofman PA, Backes WH, Vles JS, Aldenkamp AP.
    Journal: Eur J Paediatr Neurol; 2012 Nov; 16(6):707-15. PubMed ID: 22748634.
    Abstract:
    BACKGROUND: Frontal Lobe Epilepsy (FLE) is the second most frequent type of partial epilepsy and its onset is generally in childhood. Though cognitive and behavioural impairments have been described as co-morbid disorders in epilepsy, their extent in FLE, particularly in children, remains unknown. AIMS: In this study, we assess cognitive skills and behaviour in a cohort of paediatric FLE patients. METHODS: We measured the performance of 71 children with cryptogenic FLE on intelligence tests, neuropsychological tests, and behavioural questionnaires. Age-dependent normative values were used for reference. Results were related to epilepsy-factors including age at epilepsy onset, duration of epilepsy, seizure frequency, localisation of the epileptic focus and drug load. RESULTS: Paediatric FLE patients performed worse on intellectual and neuropsychological tests compared to reference values, and had a delay in school achievement. The performance of patients was typically worse on tasks measuring visual-spatial functions, memory, psychomotor speed and alertness. High seizure frequency was associated with lower scores on the arithmetic subtest of the intelligence scale; the other epilepsy-factors had no statistically significant influence on intelligence test or neuropsychological test outcome. Behavioural problems included attention problems, anxiety and internalising behaviour. These were not significantly related to epilepsy-factors. CONCLUSIONS: Children with cryptogenic FLE show a broad range of cognitive and behavioural impairments, compared to reference values. While high seizure frequency may affect performance on selected cognitive measures, other epilepsy-factors do not seem to influence cognition and behaviour. Study of micro-structural or functional brain abnormalities that underlie these cognitive and behavioural impairments are warranted.
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