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Living with Generalized epilepsy with febrile seizures plus

A family epilepsy syndrome in which members have seizures ranging from fever-related seizures to more severe epilepsy.

Understanding Generalized epilepsy with febrile seizures plus

Generalized epilepsy with febrile seizures plus (GEFS+) is a family epilepsy syndrome with a range of seizure types.

Within a family, seizures can range from simple seizures with fever (febrile seizures) to more severe types such as myoclonic-astatic epilepsy or Dravet syndrome. It is usually noticed in childhood.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Seizures brought on by fever (febrile seizures)
  • Brief seizures with staring spells (absence seizures)
  • Seizures that affect the whole brain (generalized seizures)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists, genetic specialists and seizure and epilepsy specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    FamilieSCN2A Foundation and Epilepsy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Seizure and epilepsy specialists (epileptologist)
Expert care
Expert lists: FamilieSCN2A Foundation, Epilepsy Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with FamilieSCN2A Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can genetic testing help find the cause in our family?
What seizure type does my child have within the GEFS+ range?
What should we do when a seizure happens?

Quick facts

Symptoms usually startChild
InheritanceAutosomal Dominant

Changes in genes cause this condition. It is inherited in an autosomal dominant way, which means one changed copy of a gene can be enough. GARD does not name the gene.

GeneticNeurological

Also known as: epilepsy, generalized, with febrile seizures plus; gefs+; gefs+ - genetic epilepsy with febrile seizure plus; generalised epilepsy with febrile seizures-plus; generalized epilepsy with febrile seizures-plus; genetic epilepsy with febrile seizures plus

Patient organizations

Source: NIH GARD · Generalized epilepsy with febrile seizures plusGARD ID 18641 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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