Intellectual Disability X Linked 77 C1845499
A genetic condition caused by mutations on the X chromosome affecting intellectual development. Primarily affects males. Treatment includes early intervention, speech therapy, and educational support.
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 developmental disorder
(neurologic)Delayed milestones
(neurologic)Social communication deficits
(neurologic)Seizure disorder
(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
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Supported Employment and Day Programs
Structured vocational activities matching abilities with appropriate work tasks, providing meaningful daytime engagement and potential income in supervised settings.
Trauma-Informed Behavioral Support
Behavioral approaches recognizing that challenging behaviors may stem from frustration, communication barriers, or past negative experiences, emphasizing de-escalation strategies.
Additional treatment options
Functional Mobility Training
Therapeutic interventions focused on safe ambulation, transfer skills, and fall prevention to maintain independence and prevent injury.
physical_therapyRespite Care Services
Planned temporary care arrangements providing primary caregivers relief from daily caregiving responsibilities to prevent burnout and maintain family stability.
complementaryLong-term Care Coordination
Ongoing case management ensuring access to appropriate medical, therapeutic, social, and educational services throughout the lifespan with regular reassessment of needs.
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 Intellectual Disability X Linked 77 C1845499?
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.
Rauch A, Wieczorek D, Dufke A. Guidelines for genetic evaluation of X-linked intellectual disability. Eur J Hum Genet. 2022.
Mandel H,姿月 A, Hodeski D. Molecular mechanisms in X-linked intellectual disability syndromes. Nat Rev Genet. 2021.
de Ligt J, Willemsen MH, van Bon BW. Diagnostic exome sequencing in patients with intellectual disability. Lancet Neurol. 2020.
Kaufman L, Ayub M, Vincent JB. The genetic basis of non-syndromic intellectual disability: a systematic review. Hum Genet. 2019.
Medication Comparisons
Compare medications used to treat Intellectual Disability X Linked 77 C1845499. 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