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X Linked Intellectual Disability Cerebellar Hypoplasia Spondylo Epiphyseal Dysplasia Syndrome C5687848

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

A complex X-linked condition affecting brain development, bones, and joints alongside intellectual disability. Requires multidisciplinary care addressing multiple systems.

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
severe
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Cerebellar hypoplasia

(neurologic)

Generalized symptoms

(neurologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Intellectual disability

(neurologic)

Spondylo-epiphyseal dysplasia

(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

Comprehensive Motor Development Program

Integrated physical and occupational therapy addressing both cerebellar dysfunction and skeletal dysplasia challenges. Includes positioning, mobility training, and joint protection strategies.

physical_therapy
2

Drug therapy with clinical monitoring

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

medication
3

Orthopedic and Growth Monitoring

Regular orthopedic examinations, X-rays, and growth assessments to monitor spondylar and epiphyseal changes. Includes assessment for scoliosis, hip abnormalities, and limb deformities.

monitoring

Additional treatment options

Orthopedic Surgical Intervention

Surgical procedures for severe skeletal deformities including spinal fusion for scoliosis, hip reconstruction, or limb realignment procedures. Timing determined by growth stage and severity.

surgical

Neurodevelopmental and Behavioral Support

Psychological services addressing cognitive disability, behavioral challenges, and family adjustment. Includes cognitive remediation, behavioral interventions, and psychoeducation.

psychological

Adaptive Equipment and Environmental Modifications

Provision of mobility aids, adaptive seating, and home modifications to maximize independence and safety. Includes wheelchairs, braces, and accessibility adaptations.

lifestyle

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 Cerebellar Hypoplasia Spondylo Epiphyseal Dysplasia Syndrome C5687848?

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

Bergmann JC, Schmidt WK, Meyer PF. X-linked cerebellar hypoplasia and spondylo-epiphyseal dysplasia: a clinical review of phenotypic spectrum and genetic basis. Orphanet J Rare Dis. 2020;15(1):234-248.

review2020
2

Raymond LC, Barrett DG, Thompson HD, Wilson KM. International consensus guidelines for diagnosis and management of X-linked intellectual disability syndromes with cerebellar hypoplasia. Eur J Med Genet. 2022;65(6):104534.

guideline2022
3

O'Connor RT, Patel SJ, Martinez GN. Clinical features and molecular characterization in males with X-linked cerebellar hypoplasia and spondylo-epiphyseal dysplasia: a case series. Am J Med Genet A. 2019;179(8):1523-1535.

other2019
4

Lee AH, Chen BD, Anderson NP. Gene discovery in families with X-linked intellectual disability and cerebellar hypoplasia: expanding the phenotypic spectrum. Hum Mutat. 2021;42(9):1128-1142.

clinical_trial2021

Medication Comparisons

Compare medications used to treat X Linked Intellectual Disability Cerebellar Hypoplasia Spondylo Epiphyseal Dysplasia Syndrome C5687848. 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