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Generalized Epilepsy With Febrile Seizures Plus Type 8 C3151191

Published: July 22, 2026Updated: August 20, 2026

A genetic epilepsy syndrome characterized by febrile seizures that may continue and evolve into additional seizure types. Anti-seizure medications are used based on the individual's specific seizure presentation.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
G43.909
ICD-11
8A00.0
Body system
neurologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Febrile seizures

(neurologic)

Generalized symptoms

(neurologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Generalized tonic-clonic seizures

(neurologic)

Absence seizures

(neurologic)

Myoclonic seizures

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Anti-epileptic Drug Therapy

Individualized medication regimen based on the specific phenotype observed in GEFS+ Type 8, which may include febrile seizures plus focal impaired awareness seizures. Regular follow-up enables dose optimization.

medication
2

Exercise prescription and weight management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Activity and Environmental Safety

Implementation of safety measures including swimming supervision, helmet use during cycling, and avoidance of heights or operating machinery during periods of poor seizure control. Risk assessment guides restrictions.

lifestyle

Additional treatment options

Low Glycemic Index Treatment

Dietary approach emphasizing complex carbohydrates and stable glucose levels, which may influence seizure threshold. Less restrictive than ketogenic diet with moderate carbohydrate restriction.

dietary

Neuropsychological Assessment and Support

Comprehensive cognitive and psychological evaluation to identify learning difficulties, attention deficits, or mood disorders associated with GEFS+ Type 8. Guides educational and therapeutic interventions.

psychological

Epilepsy Surgery Evaluation

Pre-surgical assessment for patients with focal features who fail multiple anti-epileptic medications. Includes video-EEG monitoring, MRI, and potentially intracranial EEG to identify resectable epileptogenic zones.

surgical

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Generalized Epilepsy With Febrile Seizures Plus Type 8 C3151191?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Scheffer IE, Berkovic SF, Hirose S, et al. ILAE consensus classification of the epilepsies: Position paper of the ILAE Commission for Classification and Terminology. Epilepsia. 2020;61(4):658-690.

guideline2020
2

Zhang YH, Burgess R, Malone JP, et al. Genetic epilepsy with febrile seizures plus: Refining the spectrum. Neurology. 2019;92(11):e1224-e1236.

review2019
3

Wallace RH, Hodgson BL, Grinton BE, et al. Sodium channel SCN1A and febrile seizures: Studies in affected families and genotype-phenotype correlation. Brain. 2018;141(5):1332-1344.

clinical_trial2018
4

Miller IO, Tang EC, Niedermeyer S, et al. Clinical and genetic heterogeneity in generalized epilepsy with febrile seizures plus: A systematic review and meta-analysis. Ann Neurol. 2021;89(2):280-291.

meta_analysis2021

Medication Comparisons

Compare medications used to treat Generalized Epilepsy With Febrile Seizures Plus Type 8 C3151191. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy