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Which factors determine febrile seizure recurrence? A prospective study
Efterpi Pavlidou1, Maria Tzitiridou, Eleftherios Kontopoulos
1Department of Paediatric Neurology, Ippokratio Hospital, Aristotle University of Thessaloniki, Greece.
Insights
Identifying predictors for febrile seizures (FS) recurrence is crucial. Low age at onset, family history, and frequent febrile episodes significantly increase the risk of recurrent febrile seizures.
Area of Science:
- Pediatric Neurology
- Epileptology
Background:
- Predicting recurrent febrile seizures (FS) is challenging due to inconsistent literature.
- Understanding risk factors is vital for clinical management and parental guidance.
Purpose of the Study:
- To identify predictors for the first recurrence of febrile seizures (FS).
- To determine factors associated with multiple recurrences (two or more) of FS in children.
- To analyze a large cohort with long-term follow-up for robust statistical power.
Main Methods:
- A cohort of 260 children experiencing their first FS was prospectively followed.
- Inclusion criteria: first FS, no prior afebrile seizures, no anticonvulsants, age 3 months to 6 years.
- Median follow-up duration was 4.3 years, with regular contact and monitoring for recurrences.
Main Results:
- Significant predictors for the first FS recurrence included: young age at onset, recurrence during the same febrile illness, frequent febrile episodes, and maternal history.
- For subsequent recurrences (second or more), low age at onset and positive family history of FS were strong predictors.
- Low temperature preceding the initial seizure predicted three or more recurrences.
Conclusions:
- Established prognostic factors for FS recurrence aid clinicians in risk assessment.
- The presence of multiple predictive factors correlates with a substantially increased risk of recurrent febrile seizures.
Purpose:
Many factors have been studied as potential predictors of recurrent febrile seizures (FS), however the available data in literature are inconsistent. The aim of the present paper is to determine which factors are responsible for the first and for multiple recurrences of FS, in a large sample of children with a long-term follow up.
Methods:
Two hundred and sixty children were followed after their first FS. The inclusion criteria were: a history of a first febrile seizure; no personal history of afebrile seizures; no previous anticonvulsant medication and age between three months and six years. The median time of follow up was 4.3 years. We had a contact with the families of the children every 4-6 months and also in every recurrence.
Results:
Very significant prognostic markers for the first FS recurrence were low age at onset, recurrence within the same illness, frequent febrile episodes and maternal preponderance. Powerful prognostic factors that may predispose children who already have one recurrence to a second or more are low age at onset and especially positive family history of FS. Additionally, low temperature prior to the initial seizure is a powerful predictor for three or more recurrences.
Conclusions:
Prognostic factors for FS recurrence are a useful tool for the clinician. It is obvious that as many powerful predictors a child has, the greater will be the risk for FS recurrence.
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