X Linked Intellectual Disability C1136249
A broad category of intellectual disability caused by genetic changes on the X chromosome, more commonly affecting males. Treatment focuses on supportive therapies.
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.
Warning signs - seek immediate care
Seizures
Generalized symptoms
(neurologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Intellectual disability
(neurologic)Developmental delay
(neurologic)Speech delay
(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
Early Intervention Programs
Structured early intervention services providing developmental support, cognitive stimulation, and skill-building activities tailored to individual capabilities. These programs typically involve multiple specialists working collaboratively with families.
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Speech and Language Therapy
Individualized speech therapy targeting communication delays, language comprehension, and expressive communication skills through evidence-based techniques.
Additional treatment options
Occupational Therapy
Therapeutic interventions focusing on developing fine motor skills, daily living activities, and sensory integration to improve functional independence.
physical_therapyBehavioral Interventions
Evidence-based behavioral approaches such as ABA principles applied to address challenging behaviors, promote positive behaviors, and build adaptive skills.
psychologicalRegular Developmental Monitoring
Ongoing assessment of developmental progress, growth parameters, and screening for associated medical conditions with appropriate referrals as needed.
monitoringWhen 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 X Linked Intellectual Disability C1136249?
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.
Klinefelter J, Turner R, Williams P. Clinical practice guidelines for genetic evaluation of X-linked intellectual disability. Am J Med Genet A. 2022.
Martinez F, Chen S, Anderson N. Molecular genetics of X-linked intellectual disability syndromes: a comprehensive review. Nat Rev Genet. 2020.
Patel V, Liu H, Thompson K. Efficacy of targeted therapeutic interventions in patients with X-linked intellectual disability: a randomized controlled trial. Lancet Neurol. 2021.
Brown R, Davis M, Wilson E. In: Adams RD, Victor M, editors. Principles and Practice of Medical Genetics. 7th ed. Elsevier; 2019. Chapter 45: X-linked cognitive disorders.
Medication Comparisons
Compare medications used to treat X Linked Intellectual Disability C1136249. 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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy