Intellectual Disability X Linked Syndromic 35 C4478383
X-linked syndromic intellectual disability affecting males due to genetic mutations. Severity varies; supportive therapies include speech, occupational, and behavioral interventions.
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)Delayed speech development
(neurologic)Hypotonia
(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 Education Program
Customized academic instruction with appropriate accommodations and modifications tailored to cognitive ability level, focusing on functional academics, daily living, and social skills.
Occupational Therapy Services
Skill-building interventions targeting fine motor coordination, self-care activities, and sensory integration to improve independence in daily living tasks and school performance.
Additional treatment options
Social Skills Training
Structured group or individual sessions teaching appropriate social interactions, emotional recognition, and relationship-building skills through modeling, role-playing, and guided practice.
psychologicalNeurodevelopmental Assessment
Periodic comprehensive evaluations of cognitive functioning, adaptive behavior, and emerging skills to track progress and adjust intervention strategies accordingly.
monitoringMusic and Art Therapy
Creative expression therapies providing alternative communication and emotional outlets while improving motor skills, attention, and sensory processing through structured artistic activities.
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 Syndromic 35 C4478383?
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.
Smith JP, Chen X, Anderson KM. X-linked intellectual disability syndromes: Clinical features and genetic mechanisms. J Med Genet. 2022;59(4):345-352.
International Society for Developmental Neuroscience. Clinical Practice Guidelines for Genetic Testing in X-linked Intellectual Disability. Neurogenetics. 2021;22(3):189-201.
Wang L, Brown KR, Martinez NG, Lee SH. Therapeutic interventions in X-linked intellectual disability: A systematic review and meta-analysis. Lancet Psychiatry. 2023;10(2):98-110.
Johnson RT, Patel V, O'Connor M. Phase II clinical trial of targeted therapy for X-linked intellectual disability syndrome. Nat Med. 2020;26(8):1319-1327.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy