PTOTSLPCohortDevelopmental medicine and child neurology2025

The risk of epilepsy after neonatal seizures.

Jeanette Tinggaard, Signe V Pedersen, Mads L Larsen and 4 others

PMID 39967409

WHAT IT FOUND

Neonatal seizures increase the risk of epilepsy, with about one in five affected children developing it by age 22.

The risk is highest in the first year but stays elevated through adolescence. Four out of five children with neonatal seizures do not develop epilepsy.

Key findings

01Children with neonatal seizures had a 20.4% cumulative risk of developing epilepsy by age 22, compared to 1.15% in those without seizures.

02The risk of epilepsy was highest in the first year of life (11.4% of those with seizures diagnosed) but remained significantly increased through adolescence.

03Four out of five neonatal survivors with a history of neonatal seizures did not develop epilepsy.

STILL TO COME

How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs

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What it does not show

The study relied on registry-based diagnoses, which may have missed electrographic-only seizures or misclassified clinical events, potentially underestimating the true number of neonatal seizures. The definition of epilepsy required two separate diagnoses, which might exclude some cases of single-provoked seizures with high recurrence risk. The study could not disentangle the effect of the underlying pathology causing the seizures from the seizures themselves. There was no confirmation that diagnoses strictly followed ILAE criteria, and a false discovery rate of 29% was reported in similar validation studies.

Declared interests

The authors stated they had no interests which might be perceived as posing a conflict or bias.

The easy way to misread this

Do not assume that every child with neonatal seizures will develop epilepsy. Four out of five neonatal survivors with a history of neonatal seizures did not develop epilepsy, so the increased risk should not be interpreted as a certainty of outcome.

Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →