Joubert Syndrome 20 C3554235
A rare genetic condition affecting brain development, leading to developmental delays, poor muscle coordination, and characteristic brain abnormalities. Managed with supportive therapies from various specialists throughout life.
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
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
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Neurodevelopmental Physical Therapy
Specialized physical therapy intervention based on neurodevelopmental principles to improve motor function, muscle tone regulation, and movement patterns in this Joubert subtype.
Neuroimaging Follow-up Protocol
Serial MRI imaging to monitor cerebellar and brainstem structures, track progression, and evaluate for associated conditions such as chorioretinal coloboma or other ocular abnormalities.
Additional treatment options
Academic and Learning Support Services
Educational interventions and accommodations addressing specific learning disabilities, executive function deficits, and classroom support needs for affected individuals.
psychologicalCorrective Ophthalmology Procedures
Surgical interventions for significant ocular abnormalities including strabismus surgery, ptosis repair, or procedures to address eye movement disorders when non-surgical approaches are insufficient.
surgicalAdaptive Sports and Recreational Activities
Structured participation in adapted physical activities, aquatic therapy, or therapeutic recreation to maintain physical function, social engagement, and quality of life.
lifestyleWhen 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.
What is Joubert Syndrome 20 C3554235?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Joubert Syndrome 20 C3554235. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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