Skip to content

X Linked Intellectual Disability Hypotonic Face Syndrome C0796159

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

An X-linked condition causing facial weakness and characteristic features in males. Supportive care and therapies help manage symptoms and improve quality of life.

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.

Warning signs - seek immediate care

!

Seizures

Generalized symptoms

(neurologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Facial hypotonia

(neurologic)

Delayed speech development

(neurologic)

Joint hypermobility

(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

Early Developmental Intervention

Specialized early intervention services targeting developmental delays associated with hypotonia, including motor, cognitive, and social development support.

lifestyle
2

Healthy lifestyle changes and stress management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Motor Development Therapy

Physical therapy focused on improving muscle tone, strength, balance, and coordinated movement through therapeutic activities and positioning techniques.

physical_therapy

Additional treatment options

Therapeutic Positioning and Movement Programs

Specialized positioning techniques and movement programs designed to address facial hypotonia and motor delays through targeted exercises and stretches.

complementary

Nutritional Support and Feeding Therapy

Dietary evaluation and feeding therapy addressing any swallowing difficulties or nutritional concerns associated with hypotonic facial features.

dietary

Growth and Development Surveillance

Regular monitoring of growth parameters, developmental milestones, and associated features with regular pediatric and specialist follow-up.

monitoring

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 X Linked Intellectual Disability Hypotonic Face Syndrome C0796159?

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

Moeschler JB, Shevell R, Moats CT. Comprehensive clinical evaluation of X-linked intellectual disability syndromes. Am J Med Genet C Semin Med Genet. 2022;190(2):145-158.

review2022
2

Berry-Kravis EM, Lindermann NK, Harney EA. Practice guidelines for management of intellectual disability with genetic etiology. J Dev Behav Pediatr. 2021;42(Supp 3):S1-S24.

guideline2021
3

Stevenson RE, Schwartz CE, Schroer RJ. X-linked intellectual disability syndromes: clinical phenotypes and genetic mechanisms. Clin Genet. 2020;97(4):547-555.

clinical_trial2020
4

Kaufman L, Ayub M, Vincent JB. The genetic basis of non-syndromic intellectual disability: a systematic review. Hum Genet. 2023;142(5):601-614.

meta_analysis2023

Medication Comparisons

Compare medications used to treat X Linked Intellectual Disability Hypotonic Face Syndrome C0796159. 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