Intellectual Disability X Linked 91 C1845142
A genetic condition causing moderate intellectual disability, mainly affecting males. It involves learning and developmental delays. Treatment includes early intervention, educational support, and 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.
Generalized symptoms
(neurologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Intellectual disability
(neurologic)Developmental delay
(neurologic)Seizures
(neurologic)Microcephaly
(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
Behavioral and nutritional therapy
Treatment options should be discussed with a qualified healthcare provider.
Individualized Support Services
Coordinated support services including case management, advocacy, and connection to community resources tailored to individual and family needs.
Family-Centered Counseling
Psychological support services addressing family adjustment, coping strategies, and building informal support networks for caregivers and siblings.
Additional treatment options
Functional Mobility Training
Therapeutic interventions focused on safe ambulation, transfer skills, and positioning to maximize functional independence in daily activities.
physical_therapySeizure and Neurological Monitoring
For patients with seizure history, regular neurological monitoring with appropriate diagnostic testing and medication management review.
monitoringSocial Skills Groups
Facilitated peer groups providing structured opportunities to practice social interactions, communication skills, and build friendships in supportive settings.
complementaryWhen 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 91 C1845142?
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.
Raymond FL, Tarpey PS, Edkins S. Mutations in IQSEC2 cause X-linked intellectual disability. Nat Genet. 2019.
Moeschler JB, Shevell M, Saul RA. Comprehensive evaluation of the child with intellectual disability. Pediatrics. 2018.
Stevenson RE, Schwartz CE, Schroer RJ. X-linked intellectual disability: natural history. Am J Med Genet B. 2020.
Grozeva D, Carss K, Spasic-Boskovic O. Targeted sequencing of 406 candidate genes for intellectual disability. Hum Mol Genet. 2017.
Medication Comparisons
Compare medications used to treat Intellectual Disability X Linked 91 C1845142. 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