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Joubert Syndrome 2 C1842577

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

A rare genetic disorder affecting brain development, causing developmental delays, coordination problems, and distinctive brain findings on imaging. Diagnosed in infancy or childhood, with care from multiple specialists to address symptoms.

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.

Warning signs - seek immediate care

!

Abnormal breathing pattern

Ataxia

(neurologic)

Generalized symptoms

(neurologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Hypotonia

(neurologic)

Developmental delay

(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

Functional Mobility Training

Structured physical therapy program targeting balance, coordination, and functional mobility to improve independence in daily activities and prevent secondary complications.

physical_therapy
2

Targeted drug therapy with dose adjustment

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

medication
3

Brainstem and Cerebellar Function Assessment

Regular monitoring of brainstem-related functions including breathing patterns, swallowing safety, and cranial nerve function to detect progressive changes.

monitoring

Additional treatment options

Sleep Study and Respiratory Evaluation

Polysomnography to assess for sleep-disordered breathing, central apnea, and other sleep abnormalities commonly seen in Joubert syndrome type 2.

procedure

Behavioral Intervention Services

Behavioral therapy addressing attention deficits, impulsivity, and emotional regulation difficulties that may accompany the cerebellar dysfunction in this condition.

psychological

Occupational Therapy Services

Occupational therapy focusing on fine motor skills, self-care abilities, and adaptive equipment recommendations to enhance functional independence in daily living.

complementary

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 Joubert Syndrome 2 C1842577?

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 Joubert Syndrome 2 C1842577. 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