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Published on: December 18, 2016
Seizure semiology of occipital lobe epilepsy in children
B M Van den Hout1, W Van der Meij, G H Wieneke
1Department of Child Neurology, Rudolf Magnus Institute for Neurosciences, Utrecht University, The Netherlands.
Insights
Seizure semiology does not differentiate between idiopathic and symptomatic occipital lobe epilepsy in children. Further clinical and neuroimaging studies are necessary for accurate diagnosis of childhood epilepsy.
Area of Science:
- Pediatric Neurology
- Epileptology
Background:
- Occipital lobe epilepsy in children presents as idiopathic (Benign Epilepsy with Occipital Paroxysms) or symptomatic forms.
- Distinguishing between these forms is crucial for appropriate management and prognosis.
Purpose of the Study:
- To investigate if seizure semiology can differentiate between idiopathic and symptomatic occipital lobe epilepsy in children.
- To assess the diagnostic value of seizure characteristics in childhood occipital epilepsy.
Main Methods:
- A cohort of 50 children with occipital spikes on EEG underwent detailed seizure semiology assessment via structured interviews.
- Epilepsy was classified as symptomatic based on psychomotor retardation and/or neurological/neuroradiological abnormalities.
Main Results:
- No statistically significant differences in seizure semiology were found between the idiopathic and symptomatic groups.
- Observed seizure semiology included motor, visual, autonomic, and consciousness impairment features.
Conclusions:
- Seizure semiology alone is insufficient to distinguish between idiopathic and symptomatic occipital lobe epilepsy in children.
- Accurate classification requires comprehensive clinical evaluation, neurophysiological testing, and neuroimaging.
Purpose:
Occipital lobe epilepsy in children occurs as an idiopathic form, i.e., Benign Epilepsy with Occipital Paroxysms (BEOP), and a symptomatic form. This study attempted to determine whether seizure semiology could distinguish between the two forms.
Methods:
Fifty children (34 boys, 16 girls) with clinical seizures and interictal EEGs presenting occipital spikes were included consecutively in the study. Seizure onset was between the ages of 2 months and 15 years. Epilepsy was considered symptomatic when psychomotor retardation and/or abnormalities at neurological and/or neuroradiological examination were found: 17 children were classified as idiopathic, and the remaining 33 children were classified as symptomatic. Seizure semiology was assessed by means of a structured interview of the children and their parents, using a detailed questionnaire. Seizure semiology was determined to comprise motor (versive or other movements of the eyes, versive movements of the head, (hemiconvulsions), visual, other signs (e.g. vomiting and headache), and impairment of consciousness.
Results:
There were no statistically significant differences in seizure semiology between the two groups.
Conclusions:
Seizure semiology cannot distinguish between different forms of occipital lobe epilepsy: Further clinical examination, clinical neurophysiological investigations, and neuroimaging studies are needed for a correct classification.
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