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X Linked Intellectual Disability Ataxia Apraxia Syndrome C4305139

Published: July 22, 2026Updated: August 25, 2026

An X-linked condition causing intellectual disability along with ataxia and apraxia, affecting coordination and voluntary movement. Treatment involves physical therapy and supportive interventions.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

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.

Generalized symptoms

(neurologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Intellectual disability

(neurologic)

Ataxia

(neurologic)

Apraxia

(neurologic)

Dysarthria

(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

Evidence-based pharmacological treatment

Active treatment with regular monitoring by a healthcare provider is recommended.

medication
2

Intensive Motor Rehabilitation

Structured physical therapy program targeting ataxia and apraxia symptoms through balance training, coordination exercises, and gait optimization. Treatment is typically provided 2-3 times weekly with home exercise program.

physical_therapy
3

Occupational Therapy

Focused occupational therapy to improve fine motor skills, hand-eye coordination, and activities of daily living. Addresses apraxia through repetitive task practice and adaptive techniques.

physical_therapy

Additional treatment options

Symptomatic Medication Management

Pharmacological interventions may include muscle relaxants for spasticity, anti-tremor medications, or medications for associated behavioral symptoms. Choice depends on specific symptom presentation.

medication

Cognitive-Behavioral Support

Psychological counseling and behavioral interventions to address intellectual disability aspects, improve coping mechanisms, and support emotional well-being of patient and family.

psychological

Multidisciplinary Monitoring

Regular assessment by neurology, genetics, and developmental specialists to track disease progression, adjust interventions, and screen for associated complications.

monitoring

When 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.

Q

What is X Linked Intellectual Disability Ataxia Apraxia Syndrome C4305139?

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

general

Medication Comparisons

Compare medications used to treat X Linked Intellectual Disability Ataxia Apraxia Syndrome C4305139. 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 25, 2026. · Read our editorial policy