X Linked Intellectual Disability Plagiocephaly Syndrome C2931516
An X-linked condition causing abnormal head shape, developmental delays, and intellectual disability in males. Features may include facial differences and motor delays. Treatment involves therapies to support development and growth.
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.
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurologic)Plagiocephaly
(neurologic)Motor delay
(neurologic)Craniosynostosis
(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
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Cranial remodeling surgery
Surgical intervention to correct severe plagiocephaly when conservative measures are insufficient. Procedure involves repositioning cranial bones to restore normal head shape and prevent neurological complications from compression.
Cranial orthosis helmet therapy
Custom-fitted helmet appliance that applies gentle pressure to guide skull growth in a more symmetrical pattern. Most effective when initiated during rapid skull growth phases in infancy.
Additional treatment options
Positional therapy program
Repositioning techniques and neck muscle exercises to address muscular torticollis that often accompanies positional plagiocephaly. Includes supervised tummy time and positioning modifications during sleep.
physical_therapyOphthalmologic assessment
Regular eye examinations to detect visual disturbances associated with plagiocephaly, particularly strabismus or refractive errors that may result from abnormal skull development affecting orbital structures.
monitoringFamily counseling and support
Psychological support for families navigating diagnosis and treatment decisions for cranial asymmetry. Addresses parental anxiety and provides coping strategies for managing medical appointments and interventions.
psychologicalWhen 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 X Linked Intellectual Disability Plagiocephaly Syndrome C2931516?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat X Linked Intellectual Disability Plagiocephaly Syndrome C2931516. 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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy