If one child has epilepsy, can my next child have it too?

The worry is natural — but for most families, one child with epilepsy does not mean your next baby will have it too.

In short

For most families, having one child with childhood epilepsy only slightly raises the chance for a sibling — and in many cases the risk is close to that of any other family. Epilepsy is not usually a single inherited illness; it can have many causes, and only a small number run strongly in families. The honest answer depends on why your first child has seizures, which is something a paediatric neurologist can help you understand.

What shapes the chance

• It is rarely a simple yes or no. Childhood epilepsy is an umbrella term for many different seizure conditions. Some have a clear genetic link, many do not, and some follow a one-off cause such as a difficult birth, an infection or an injury — which would not be passed on at all.
• A small extra chance for some types. Certain childhood epilepsy syndromes (often the kinds that respond well to treatment and ease with age) do show a modestly higher chance among siblings. Even then, most siblings are unaffected.
• Identified genetic conditions matter most. If your first child's epilepsy is part of a known genetic syndrome, the recurrence chance can be higher and more predictable — which is exactly why genetic counselling is so helpful before or during a next pregnancy.
• Many causes are not inherited at all. Where seizures follow a specific event affecting the brain, your next child carries no added inherited risk from that cause.

When to seek advice

If you are planning another baby, ask your child's paediatrician or paediatric neurologist for a clear explanation of your child's epilepsy type and whether genetic counselling would help. Bring any test reports — an EEG, MRI or genetic results — as these guide a far more personal answer than any general figure. Any new seizure, in any child, always needs prompt medical review first.

The Pinnacle way

Epilepsy is a medical condition — diagnosis and seizure management always sit with your paediatrician or paediatric neurologist, and any genetic questions belong with a qualified counsellor. AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app or an online form. Where seizures affect a child's speech, movement or learning, our therapists support development alongside that medical care; explore our developmental and therapy support and our speech therapy, and learn how a child's strengths are mapped through the AbilityScore® assessment.

Trusted sources

WHO ICD-11 classification of epilepsy and seizure disorders; World Health Organization epilepsy fact guidance; American Academy of Pediatrics (HealthyChildren.org) information for families on childhood seizures.

Next step — Worried about your child's development alongside epilepsy? Book a developmental assessment with a Pinnacle clinician while keeping your neurologist as your first point of seizure care.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.