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Behavioral phenotypes of pediatric temporal lobe epilepsy
William A Schraegle1,2,3, Rachael Tillman4, Alyssa Ailion5
1Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, Texas, USA.
Epilepsia
|February 17, 2022
Summary
Pediatric temporal lobe epilepsy (TLE) in youth presents with three distinct behavioral patterns: no concerns, externalizing problems, and internalizing problems. These phenotypes correlate with clinical, familial, and quality-of-life factors, aiding targeted interventions.
Area of Science:
- Pediatric Neurology
- Child Psychiatry
- Behavioral Science
Background:
- Pediatric temporal lobe epilepsy (TLE) is associated with a wide range of emotional-behavioral issues.
- Significant variability in these problems complicates diagnosis and treatment.
- Identifying distinct behavioral patterns is crucial for understanding and managing TLE in children.
Purpose of the Study:
- To empirically identify latent behavioral patterns (phenotypes) in children with TLE.
- To examine the clinical, sociodemographic, and functional correlates of these identified phenotypes.
Main Methods:
- Utilized unsupervised machine learning on parental Behavior Assessment System for Children, 2nd Edition (BASC-2) ratings from 81 children with TLE.
- Analyzed demographic factors, seizure characteristics, psychosocial variables, neuropsychological performance, psychiatric status, and health-related quality of life (HRQoL).
Main Results:
- Identified three behavioral phenotypes: no concerns (43%), externalizing problems (41%), and internalizing problems (16%).
- Phenotypes differed significantly in seizure variables, psychosocial factors, executive functioning, and HRQoL.
- Externalizing phenotype linked to younger age and single-parent households; internalizing phenotype associated with older onset, hippocampal sclerosis, and parental psychiatric history. Both showed elevated family stress.
Conclusions:
- Youth with TLE exhibit three distinct behavioral phenotypes with associated clinical and sociodemographic markers.
- These findings highlight the heterogeneity of behavioral presentations in pediatric TLE.
- Provides a framework for improved screening and targeted interventions to support affected youth and their families.
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