Mucopolysaccharidosis Mps Iii A C0086647
A genetic disorder that primarily affects the brain and nervous system, causing developmental delay and behavioral problems to worsen over time. Children may have normal early development before showing regression. Treatment is mainly supportive and focuses on managing symptoms.
Key facts at a glance
- ICD-10
- E88.9
- ICD-11
- 5A00.0
- Body system
- metabolic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Severe developmental regression
(nervous system)Behavioral disturbances
(psychiatric)Sleep disturbances
(nervous system)Hepatomegaly
(gastrointestinal)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.
Symptomatic Pharmacological Management
Targeted medication approaches to manage specific MPS III-a symptoms including sleep disturbances, hyperactivity, anxiety, and seizure activity. Treatment plans are individualized based on symptom presentation and adjusted as disease progresses.
Behavioral Management and Support
Structured behavioral interventions and environmental modifications to manage hyperactivity, aggression, and sleep disorders common in MPS III-a. Includes sensory integration therapy and structured daily routines.
Additional treatment options
Physical Therapy for Mobility Preservation
Therapeutic exercises and positioning programs designed to maintain joint range of motion, prevent contractures, and support safe ambulation. Includes stretching, strengthening, and gait training activities.
physical_therapyDisease Progression Monitoring
Regular assessment of neurological decline, developmental regression, and emerging complications. Includes developmental testing, seizure monitoring, and evaluation of cardiac and respiratory function.
monitoringClinical Trial Participation
Opportunity to participate in investigational therapies including gene therapy, substrate reduction therapy, and chaperone therapy approaches targeting the underlying cause of MPS III-a.
complementaryWhen 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 Mucopolysaccharidosis Mps Iii A C0086647?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy