Angelman Syndrome Due To Imprinting Defect In 15q11 Q13 C5681834
A genetic neurodevelopmental disorder due to an imprinting defect in chromosome 15q11-q13. Children show severe developmental delay, characteristic facial features, and movement problems. Treatment involves supportive care, physical therapy, and seizure management.
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
Seizures
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Severe intellectual disability
(neurologic)Microcephaly
(neurologic)Hypopigmentation of skin
(integumentary)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
Anticonvulsant therapy
Seizure management using anticonvulsant medications is essential for individuals with Angelman syndrome due to imprinting defects. The choice of anticonvulsant should be tailored to seizure type and patient response, with regular monitoring for efficacy and side effects.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Physical and occupational therapy
Early intervention physical and occupational therapy programs help improve motor coordination, balance, and functional abilities in children with Angelman syndrome. Therapy focuses on movement patterns, strength building, and adaptive techniques for daily activities.
Additional treatment options
Communication and speech therapy
Speech-language therapy utilizing augmentative and alternative communication systems significantly improves communication outcomes. Therapists work on developing gesture-based communication, picture exchange systems, and adaptive communication devices.
psychologicalSleep hygiene and management
Establishing consistent bedtime routines and environmental modifications helps address sleep disturbances common in Angelman syndrome. Sleep management may include structured schedules, environmental controls, and behavioral strategies.
lifestyleMultidisciplinary developmental monitoring
Regular assessments by a team of specialists including neurologists, geneticists, and developmental pediatricians ensure comprehensive care. Monitoring tracks developmental progress, identifies emerging needs, and adjusts intervention strategies.
monitoringWhen 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.
What is Angelman Syndrome Due To Imprinting Defect In 15q11 Q13 C5681834?
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.
Williams CA, Beaudet AL, Clayton-Smith J, et al. Angelman syndrome 2005: updated consensus for diagnostic criteria. Am J Med Genet A. 2006.
Lossie AC, Whitney MM, Amidon D, et al. Distinct phenotypes distinguish the molecular classes of Angelman syndrome. J Med Genet. 2001.
Gentile JK, Goto MP, Zahorak C, et al. A prospective study of sleep in individuals with Angelman syndrome. Neuropsychiatr Dis Treat. 2018.
Dagli AI, Mueller J, Williams CA. Angelman syndrome: a review of clinical and genetic aspects. Am J Med Genet C Semin Med Genet. 2009.
Medication Comparisons
Compare medications used to treat Angelman Syndrome Due To Imprinting Defect In 15q11 Q13 C5681834. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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 27, 2026. · Read our editorial policy