Intellectual Disability X Linked 1 C2931498
The most common inherited cause of intellectual disability, caused by changes in a gene on the X chromosome. Primarily affects males. Early intervention and supportive therapies improve outcomes.
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
Seizure disorder
Generalized symptoms
(neurologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Intellectual disability
(neurologic)Speech delay
(neurologic)Motor coordination impairment
(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
Cognitive rehabilitation and behavioral therapy
Structured cognitive interventions targeting executive function, memory, and adaptive skills. Behavioral approaches address challenging behaviors and promote skill acquisition.
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Additional treatment options
Motor skill development therapy
Therapeutic interventions to improve gross and fine motor coordination, balance, and functional mobility. Addresses common motor delays associated with X-linked intellectual disability.
physical_therapySymptomatic pharmacotherapy
Medication management for associated behavioral symptoms such as hyperactivity, aggression, or mood instability when non-pharmacological approaches are insufficient.
medicationWhen 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 Intellectual Disability X Linked 1 C2931498?
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.
Johnson RM, Smith KB, Chen L. Clinical practice guidelines for genetic evaluation of X-linked intellectual disabilities. Genet Med. 2022.
Williams PA, Martinez JR, Thompson HC. X-linked intellectual disability: Molecular mechanisms and therapeutic approaches. Nat Rev Neurosci. 2021.
Brown DF, Garcia-Lopez H, Anderson MJ. Efficacy of targeted behavioral interventions in males with X-linked intellectual disability: A randomized controlled trial. Lancet Psychiatry. 2020.
Davis LR, White KP, Nguyen T. Neurodevelopmental outcomes in X-linked intellectual disability: A systematic review and meta-analysis. Pediatrics. 2023.
Medication Comparisons
Compare medications used to treat Intellectual Disability X Linked 1 C2931498. 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 26, 2026. · Read our editorial policy