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Children with focal sharp waves: clinical and genetic aspects
H Doose1, B Brigger-Heuer, B Neubauer
1Epilepsy Center, Epilepsy Research Unit, Raisdorf, Germany.
Epilepsia
|July 1, 1997
Summary
This study reveals that genetic factors for benign focal sharp waves in children
Area of Science:
- Pediatric Neurology
- Clinical Neurophysiology
- Medical Genetics
Background:
- Benign focal sharp waves on electroencephalogram (EEG) are observed in children.
- Understanding the genetic basis and clinical spectrum is crucial for diagnosis and management.
Purpose of the Study:
- To investigate the clinical manifestations in children with benign focal sharp waves.
- To explore the genetic background of clinical and EEG findings in a family study.
Main Methods:
- Evaluated 147 children with and without seizures, meeting EEG criteria for benign focal sharp waves.
- Included siblings for EEG investigation and conducted family questionnaires on seizure history.
Main Results:
- Observed various seizure types including febrile convulsions (FC) and rolandic seizures; neonatal seizures were overrepresented.
- Family data suggested maternal transmission of FC liability, with affected relatives more likely to have FC.
- EEG showed focal sharp waves in siblings, but no clear relation to clinical symptoms; generalized genetic patterns were common.
Conclusions:
- The genetic anomaly for focal sharp waves exhibits significant phenotypic variability.
- Clinical and EEG findings support a multifactorial pathogenesis for epilepsies with benign focal sharp waves.