Epilepsy Comorbidities in Children: What a Norwegian Study Found

What was studied

Researchers described co-occurring health conditions in 1,054 children and youth with validated epilepsy diagnoses in Norway. Participants came from the Norwegian Mother, Father, and Child Cohort Study, which includes more than 113,000 children with consent for prospective follow-up.

Using structured medical record reviews, the researchers grouped co-occurring conditions as medical, neurological, neurodevelopmental, or psychiatric. They also examined whether factors such as sex, heredity, neonatal events, epilepsy etiology, syndrome category, and other comorbidities were associated with these categories.

What they found

Overall, 78% had at least one comorbid condition. Medical conditions were reported in 62%, neurodevelopmental impairments in 51%, neurological conditions in 39%, and psychiatric conditions in 32%.

Comorbidities were particularly frequent among children with structural or genetic etiologies, developmental and epileptic encephalopathies, or combined epilepsy. Neurodevelopmental comorbidities were reported in 93%–98% of children in the latter groups. They were also present in 25% of children with self-limited epilepsies, 33% with genetic generalized epilepsies, and 42% with epilepsies of unknown etiology.

Different epilepsy features were associated with different patterns of comorbidity. Genetic etiology was associated with increased odds of medical comorbidity, structural etiologies with neurological comorbidity, and developmental and epileptic encephalopathies with increased odds of neurological and neurodevelopmental comorbidity. Neurodevelopmental comorbidity was associated with increased odds of medical, neurological, and psychiatric comorbidities overall. Developmental and epileptic encephalopathies were associated with reduced odds of reported psychiatric comorbidity, and affective conditions were less frequent in this group.

Limits of the evidence

These analyses show associations and do not establish that an epilepsy etiology, syndrome, or other factor caused a comorbid condition. The findings come from children in a Norwegian cohort with validated epilepsy diagnoses, and the abstract does not assess how well the results apply to other populations.

The abstract does not provide the participants’ age distribution, details about individual comorbid conditions, timing of diagnoses, missing information, or condition severity. It also does not explain why reported psychiatric and affective conditions were less frequent in children with developmental and epileptic encephalopathies.

For families and caregivers

Many children and youth with epilepsy in this study had medical, neurological, developmental, or psychiatric conditions in addition to seizures. Neurodevelopmental impairments were present even in some self-limited epilepsies. The findings support evaluating and managing children’s broader health and developmental needs, while recognizing that risks and needs vary among individuals.

What to watch next

Further research could examine how comorbidities change over time, whether some conditions are underrecognized, whether the findings are similar in other populations, and how broader assessment and management affect outcomes.

Terms in this summary

comorbidity

A health condition that occurs alongside another condition, such as a medical, neurological, neurodevelopmental, or psychiatric condition occurring with epilepsy.

neurodevelopmental impairment

An impairment related to the development and functioning of the brain.

structural etiology

Epilepsy attributed to a structural abnormality in the brain.

genetic etiology

Epilepsy attributed to a genetic factor.

developmental and epileptic encephalopathy

An epilepsy condition in which developmental difficulties may relate to both the underlying cause and epileptic activity.

self-limited epilepsy

An epilepsy syndrome expected to resolve or remit over time.

logistic regression

A statistical method used to estimate how factors are associated with the odds of an outcome.