Brain & development · 2026
Electroencephalogram abnormalities in children presenting with language development delay.
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Yavuz Merve, Gülağız Feyza, Ünalp Aycan, Karaoğlu Pakize, Yılmaz Ünsal
Аннотация
BACKGROUND: EEG abnormalities are frequently reported in children with developmental language disorders, particularly in language-associated regions, though existing data remain inconsistent.
AIM: This study investigated the frequency, density, and localization of epileptiform discharges in children with language delays, and the incidence of epilepsy within a 12-month follow-up.
METHOD: A total of 132 children with language delay were evaluated. Ten later diagnosed with autism spectrum disorder were excluded, leaving 122 for analysis. Epileptiform discharges were assessed for frequency, localization, and spike-wave index (SWI). Clinical, demographic, neuroimaging, and developmental data were collected. Comparative analyses were performed between children with and without epileptiform discharges, and between those who did and did not develop epilepsy.
RESULTS: The mean age at admission was 39.6 months, with boys comprising 73.8% of the cohort. Epileptiform discharges were present in 14 children (11.5%), predominantly in the temporoparietal region (83.3%), mostly right-sided or bilateral. Notably, no patient exhibited unilateral discharges on the left. Epilepsy developed in six children during follow-up, all of whom had epileptiform discharges on initial EEG. None with a normal baseline EEG developed epilepsy. Age, sex, parental consanguinity, or family history of language delay, epilepsy, or febrile seizures showed no significant differences between groups. Although SWI values increased significantly over one year, neither baseline SWI nor its temporal change was associated with the development of epilepsy.
CONCLUSION: EEG abnormalities and epilepsy are not rare in children with language delay. Those with epileptiform discharges on initial EEG require careful monitoring, as they carry a higher risk of developing epilepsy.
AIM: This study investigated the frequency, density, and localization of epileptiform discharges in children with language delays, and the incidence of epilepsy within a 12-month follow-up.
METHOD: A total of 132 children with language delay were evaluated. Ten later diagnosed with autism spectrum disorder were excluded, leaving 122 for analysis. Epileptiform discharges were assessed for frequency, localization, and spike-wave index (SWI). Clinical, demographic, neuroimaging, and developmental data were collected. Comparative analyses were performed between children with and without epileptiform discharges, and between those who did and did not develop epilepsy.
RESULTS: The mean age at admission was 39.6 months, with boys comprising 73.8% of the cohort. Epileptiform discharges were present in 14 children (11.5%), predominantly in the temporoparietal region (83.3%), mostly right-sided or bilateral. Notably, no patient exhibited unilateral discharges on the left. Epilepsy developed in six children during follow-up, all of whom had epileptiform discharges on initial EEG. None with a normal baseline EEG developed epilepsy. Age, sex, parental consanguinity, or family history of language delay, epilepsy, or febrile seizures showed no significant differences between groups. Although SWI values increased significantly over one year, neither baseline SWI nor its temporal change was associated with the development of epilepsy.
CONCLUSION: EEG abnormalities and epilepsy are not rare in children with language delay. Those with epileptiform discharges on initial EEG require careful monitoring, as they carry a higher risk of developing epilepsy.