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Developmental And Epileptic Encephalopathy 81 C5231450

Published: July 22, 2026Updated: August 26, 2026

A severe genetic neurological condition featuring early-onset epilepsy and impaired brain development. Treatment aims to reduce seizures and support overall development.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 26, 2026Editorial policy

Key facts at a glance

ICD-10
G40.909
ICD-11
8A00.0
Body system
neurologic
Severity
severe
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Epileptic spasms

Generalized symptoms

(neurologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Intellectual disability

(neurologic)

Poor head control

(neurologic)

Visual impairment

(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

First-line pharmacological management using appropriate anti-seizure medications tailored to seizure type and patient profile. Regular assessment of efficacy and side effects is essential.

medication
2

Pharmacological management with first-line agents

Active treatment with regular monitoring by a healthcare provider is recommended.

medication
3

Ketogenic diet therapy

High-fat, low-carbohydrate therapeutic diet that may help reduce seizure frequency in some patients. Requires careful supervision and regular monitoring of metabolic parameters.

dietary

Additional treatment options

Vagus nerve stimulation

Surgical implantation of a device that delivers electrical impulses to the vagus nerve to reduce seizure frequency. Typically considered when medications are ineffective.

procedure

Early intervention physical therapy

Structured motor development program addressing hypotonia, coordination, and movement patterns. Includes stretching, strengthening, and functional mobility exercises.

physical_therapy

Continuous EEG and developmental monitoring

Regular video-EEG monitoring to characterize seizure patterns and evaluate treatment response, combined with periodic developmental assessments.

monitoring

When to seek medical help

Recognize when you need immediate medical attention.

See a doctor within 24 hours

Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.

Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Developmental And Epileptic Encephalopathy 81 C5231450?

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

general

Medication Comparisons

Compare medications used to treat Developmental And Epileptic Encephalopathy 81 C5231450. 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 26, 2026. · Read our editorial policy