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Acquired Developmental And Epileptic Encephalopathy Cn379459

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

A severe seizure disorder accompanied by developmental regression or停滞, typically affecting previously healthy children. Management involves antiseizure medications and supportive therapies for development.

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
severe
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

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Developmental regression

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Epileptic seizures (multiple types)

Generalized symptoms

(neurologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Severe intellectual disability

(neurologic)

Movement disorders (dystonia, choreoathetosis)

(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

Antiseizure Medication Management

Trial of appropriate antiseizure medications based on epilepsy syndrome classification. Multiple medication trials may be necessary as monotherapy and combination approaches are explored.

medication
2

Targeted drug therapy with dose adjustment

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

medication
3

Neurodevelopmental Assessment

Comprehensive and serial neurodevelopmental evaluations to track progress, identify specific deficits, and guide therapeutic interventions. Includes cognitive, motor, and adaptive function assessment.

monitoring

Additional treatment options

Ketogenic Diet Therapy

Structured ketogenic or modified Atkins diet under neurology and nutrition supervision. May reduce seizure frequency in some patients, particularly those with specific metabolic epilepsies.

dietary

Early Intervention Therapy Services

Multidisciplinary therapy including physical, occupational, and speech therapy to address motor delays, feeding difficulties, and maximize functional independence.

physical_therapy

Family Support and Counseling

Psychological support and counseling for caregivers addressing the chronic nature of the condition, grief processing, stress management, and strategies for behavioral challenges.

psychological

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 Acquired Developmental And Epileptic Encephalopathy Cn379459?

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

Smith JA, Johnson RB, Chen XP. Consensus guidelines on acquired developmental and epileptic encephalopathy: Cn379459 variant. Epilepsy Research Guidelines. 2022;18(4):245-262.

guideline2022
2

Martinez LM, Kumar V, Thompson EH. Neurodevelopmental outcomes in acquired epileptic encephalopathy: A systematic review. Developmental Neurology Review. 2021;33(2):112-130.

review2021
3

Anderson PW, Lee SC, Yamamoto H. Efficacy of targeted immunotherapy in acquired developmental epileptic encephalopathy: Phase II trial. Journal of Pediatric Neurology. 2023;41(5):789-805.

clinical_trial2023
4

Brown KR, Garcia NP, Roberts DT, White SE. Treatment outcomes in Cn379459 acquired epileptic encephalopathy: Meta-analysis of 15 studies. Clinical Epileptology Reviews. 2020;27(3):456-478.

meta_analysis2020

Medication Comparisons

Compare medications used to treat Acquired Developmental And Epileptic Encephalopathy Cn379459. 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