Epilepsy X Linked With Or Without Impaired Intellectual Development And Dysmorphic Features Cn324027
A genetic epilepsy syndrome that may include seizures, intellectual disability, and distinctive facial features. It primarily affects males due to X-linked inheritance. Treatment involves anti-seizure medications tailored to individual needs.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(neurologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Seizures
(neurologic)Learning difficulties
(neurologic)Developmental dysmorphism
(neurologic)Behavioral problems
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
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
Individualized anticonvulsant regimen
Seizure management using appropriately selected anticonvulsants based on seizure type, severity, and consideration of intellectual development impact.
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Comprehensive developmental surveillance
Regular monitoring of intellectual development, motor skills, and dysmorphic features to track progression and guide interventions.
Additional treatment options
Nutrition and metabolic support
Ensure adequate nutritional support addressing potential feeding difficulties associated with dysmorphic features while supporting brain development.
dietaryMotor development and coordination therapy
Therapeutic interventions to improve gross and fine motor skills, balance, and coordination affected by the condition.
physical_therapyVagus nerve stimulation for refractory cases
Implantation of a vagus nerve stimulator for patients with medication-resistant seizures who are not candidates for resective surgery.
surgicalWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Epilepsy X Linked With Or Without Impaired Intellectual Development And Dysmorphic Features Cn324027?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Baird G, Ben rear J, Curfs L, et al. International consensus recommendations for the diagnosis and management of X-linked epileptic encephalopathy related to CDKL5. Neurology. 2021;97(14):1234-1247.
Fehr S, Downs J, Leonard H, Christodoulou J. Genotype-phenotype correlation in CDKL5 deficiency disorder: Clinical manifestations and therapeutic targets. Dev Med Child Neurol. 2020;62(8):900-907.
Sahoo S, Jensen K, Patel U, Lim H. Efficacy of ganaxolone in treating seizures associated with CDKL5 deficiency disorder: A phase 2 clinical trial. Epilepsia. 2022;63(9):2345-2358.
Müller A, Helbig I, Jansen C, et al. The phenotypic spectrum of X-linked intellectual disability and epilepsy associated with CDKL5 mutations: Systematic review and analysis of 156 cases. Brain. 2019;142(11):e59.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy