Intellectual disability and epilepsy in down syndrome.

Area of Science:

• Pediatric Neurology
• Genetics
• Developmental Neuroscience

Background:

• Down syndrome (DS) is the most common genetic cause of intellectual disability.
• Epilepsy affects a significant portion of children with DS, yet data on its characteristics and impact remain limited.
• Understanding the relationship between epilepsy and cognitive impairment in DS is crucial for effective management.

Purpose of the Study:

• To analyze the frequency and types of seizures in children with DS.
• To evaluate treatment responses and outcomes for epilepsy in this population.
• To compare cognitive impairment levels in children with DS, with and without epilepsy.

Main Methods:

• Retrospective analysis of a pediatric neurology database (2010-2013).
• Inclusion of 39 pediatric cases with DS and neurological symptoms; 9 cases (23%) had epilepsy.
• Data collected included clinical examinations, seizure types, EEG, MRI, and psychological assessments.

Main Results:

• Epilepsy was present in 23% of the DS cohort.
• The most common seizure type was epileptic spasms (56%), followed by focal seizures (33%).
• Children with DS and epilepsy showed more severe cognitive impairment (78% moderate to severe) compared to those without epilepsy (30% moderate to severe).

Conclusions:

• West syndrome is the most frequent epileptic syndrome in DS, responding well to antiepileptic drugs.
• Epilepsy is associated with more severe intellectual disability in children with DS.
• Controlling seizures led to slight improvements in intellectual and language capabilities.