X Linked Intellectual Disability Stevenson Type C4305077
A genetic disorder linked to the X chromosome that causes intellectual disability, mainly affecting males. It involves varying degrees of developmental and cognitive challenges. Management includes educational support and therapeutic interventions.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Seizures
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurologic)Developmental delay
(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
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Individualized Education Plan Development
Specialized educational interventions coordinated with schools to provide appropriate academic accommodations, modified curriculum, and learning support services.
Psychopharmacological Management
Targeted medication for associated behavioral symptoms including hyperactivity, aggression, or mood instability when non-pharmacological approaches are insufficient.
Additional treatment options
Adaptive Physical Activity Program
Supervised exercise program designed to improve strength, coordination, and cardiovascular fitness while accommodating motor limitations.
physical_therapyOccupational Therapy Services
Therapeutic interventions focused on improving activities of daily living, fine motor skills, and sensory processing integration.
complementaryGrowth and Development Tracking
Regular assessment of growth parameters, developmental milestones, and puberty progression with appropriate specialist referrals as needed.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is X Linked Intellectual Disability Stevenson Type C4305077?
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.
Stevenson RE, Schwartz CE, Rogers RC. X-linked intellectual disability syndromes: clinical spectrum and molecular basis. Hum Genet. 2022.
Moeschler JB, Shevell MC, Committee on Genetics. Comprehensive evaluation of the child with intellectual disability or global developmental delays. Pediatrics. 2020.
Berry-Kravis EM, Lindemann L, Jønch AE. Drug development for neurodevelopmental disorders: lessons learned from fragile X syndrome. Nat Rev Drug Discov. 2021.
Kaufman L, Ayub M, Vincent JB. The genetic basis of non-syndromic intellectual disability: a systematic review of the evidence. Clin Genet. 2019.
Medication Comparisons
Compare medications used to treat X Linked Intellectual Disability Stevenson Type C4305077. 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.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy