EEG Abnormalities in Children with Speech and Language Impairment

Area of Science:

• Pediatric Neurology
• Neurophysiology
• Developmental Pediatrics

Background:

• Epilepsy, characterized by recurrent seizures, can impact language abilities, with variations depending on epilepsy type, severity, and etiology.
• Limited research exists on electroencephalographic (EEG) abnormalities in children experiencing speech and language impairments.
• This study investigates the association between epileptiform EEG abnormalities and speech/language impairment in children.

Purpose of the Study:

• To determine the prevalence of epileptiform EEG abnormalities in children with speech and language impairment.
• To identify the localization and lateralization of these abnormalities, particularly in relation to dominant language areas (left hemisphere).

Main Methods:

• A cohort of 94 pediatric patients (ages 2-8 years) with speech and language impairment was studied.
• Video electroencephalography (EEG) was conducted according to American Clinical Neurophysiology Society guidelines, including activation procedures.
• EEG recordings were analyzed for background abnormalities, benign variants, interictal, and ictal epileptiform discharges.

Main Results:

• EEG abnormalities were present in 47.9% of the children.
• Epileptiform EEG discharges were more frequent in children with a history of seizures (73.6%) compared to those without (41.3%).
• Abnormalities included abnormal background (64.5%), generalized interictal epileptiform discharges (57.8%), focal epileptiform discharges exclusively from the left hemisphere (20%), and multifocal discharges (33.3%).

Conclusions:

• Generalized EEG abnormalities are frequent in children with speech and language impairment.
• Focal epileptiform discharges in this population are predominantly observed in the left hemisphere.
• Routine EEG and complementary brain imaging are recommended for children with speech and language impairment to aid in diagnosis and management.