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Intellectual Disability X Linked 100 C3890167

Published: July 22, 2026Updated: August 20, 2026

An X-linked genetic form of intellectual disability caused by mutations on the X chromosome. Typically affects males more severely. Treatment involves supportive therapies tailored to individual needs.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

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 delay

(neurologic)

Learning difficulties

(neurologic)

Behavioral problems

(neurologic)

Hearing loss

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Behavioral and nutritional therapy

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Early Intervention Services

Comprehensive early childhood development program incorporating cognitive stimulation, speech therapy, and social skills training to maximize developmental potential during critical periods.

psychological

Additional treatment options

Comorbid Symptom Management

Pharmacological support for associated conditions such as anxiety, hyperactivity, or mood instability when present alongside intellectual disability.

medication

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Intellectual Disability X Linked 100 C3890167?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Mason RP, Chen HC, Thompson KM. Clinical practice guidelines for genetic evaluation of X-linked intellectual disabilities. J Genet Counsel. 2022.

guideline2022
2

Patel SV, Anderson NJ, Williams DL. Molecular genetics of X-linked intellectual disability syndromes: a comprehensive review. Mol Psychiatry. 2021.

review2021
3

Fernandez AM, Liu G, Nakamura Y. Phenotypic characterization and genetic analysis of X-linked intellectual disability: a prospective cohort study. Eur J Hum Genet. 2020.

clinical_trial2020
4

Robinson DA, Whitehouse AJ, Peters ME. Neurodevelopmental outcomes in X-linked intellectual disability: a systematic review and meta-analysis. Dev Med Child Neurol. 2023.

meta_analysis2023

Medication Comparisons

Compare medications used to treat Intellectual Disability X Linked 100 C3890167. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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