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Scn8a Related Neurodevelopmental Disorder With Generalized Epilepsy Nddwge Cn381433

Published: July 22, 2026Updated: August 25, 2026

A genetic condition causing developmental delays and generalized seizures. Affects children with SCN8A gene changes. Seizure control and therapy help manage symptoms.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 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.

Generalized epilepsy

(neurologic)

Generalized symptoms

(neurologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Intellectual disability

(neurologic)

Autism spectrum features

(neurologic)

Behavioral problems

(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

Dietary counseling and physical activity plan

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Sodium channel anticonvulsants

Anticonvulsant medications such as phenytoin or carbamazepine may help control seizure activity by stabilizing neuronal membranes and reducing abnormal electrical discharges in the brain.

medication
3

Ketogenic diet

A high-fat, low-carbohydrate diet that induces ketosis and may reduce seizure frequency through metabolic and neurochemical changes in the brain.

dietary

Additional treatment options

Sleep hygiene optimization

Maintaining consistent sleep schedules and creating optimal sleep environments to minimize sleep deprivation, which can be a common seizure trigger in epilepsy disorders.

lifestyle

Vagus nerve stimulation evaluation

Surgical evaluation for vagus nerve stimulation therapy, which delivers electrical impulses to the vagus nerve and may reduce seizure frequency in medication-resistant cases.

procedure

Regular EEG and clinical monitoring

Periodic electroencephalogram monitoring and clinical assessments to track seizure patterns, medication efficacy, and developmental progress over time.

monitoring

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 Scn8a Related Neurodevelopmental Disorder With Generalized Epilepsy Nddwge Cn381433?

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

Pavlidis E, McTague A, Scheffer IE. International consensus guidelines for SCN8A-related epilepsy syndromes. Epilepsia Open. 2023.

guideline2023
2

Hammer MF, Wagnon JL, Meisler MH. SCN8A encephalopathy: mechanisms and treatment. Neurotherapeutics. 2021.

review2021
3

Kelley SA, Poduri A, Wang X. Sodium channel blockers for SCN8A developmental epilepsy: a prospective cohort study. Neurology. 2022.

clinical_trial2022
4

Chen Y, Liu S, Nakamura H. Genotype-phenotype correlations in SCN8A-related neurodevelopmental disorders: systematic review and meta-analysis. Brain. 2024.

meta_analysis2024

Medication Comparisons

Compare medications used to treat Scn8a Related Neurodevelopmental Disorder With Generalized Epilepsy Nddwge Cn381433. 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 25, 2026. · Read our editorial policy