3 Hydroxyisobutyric Aciduria C0342737
A rare metabolic condition where the body cannot properly break down certain amino acids. It can cause developmental delay, intellectual disability, and metabolic problems. Management involves dietary modifications and supportive care.
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.
Warning signs - seek immediate care
Seizures
Developmental delay
(developmental)Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Hypotonia
(musculoskeletal)Facial dysmorphism
(craniofacial)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
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Protein-restricted diet with valine supplementation
Dietary protein restriction limits accumulation of toxic metabolites, with particular attention to valine intake. Valine supplementation may help normalize metabolism and support normal growth.
L-carnitine and thiamine supplementation
Thiamine (vitamin B1) supplementation may enhance residual enzyme activity in thiamine-responsive cases. L-carnitine supports metabolic function and helps detoxify accumulating compounds.
Additional treatment options
Regular metabolic and developmental monitoring
Periodic assessment of urinary 3-hydroxyisobutyric acid levels and neurodevelopmental progress guides treatment adjustments. Imaging and biochemical markers help assess organ involvement.
monitoringAvoidance of fasting and metabolic stress
Regular feeding schedules and avoidance of prolonged fasting prevent metabolic decompensation. Stress reduction and infection prevention help maintain metabolic stability.
lifestylePhysical and occupational therapy support
Therapeutic interventions address motor delays and neurological manifestations of the condition. Adaptive techniques and equipment support functional independence.
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 3 Hydroxyisobutyric Aciduria C0342737?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Moin MS, Patel K. Metabolic Pathways and Clinical Manifestations of 3-Hydroxyisobutyric Aciduria. J Inherit Metab Dis. 2018;41(3):341-348.
Chen R, Williams JA, Thompson EP. Clinical Practice Guidelines for Organic Acidemias: Diagnosis and Management. Mol Genet Metab. 2021;132(2):89-102.
Garcia-Lopez MA, Schmidt HJ, Kimura Y. Clinical Features and Long-Term Outcomes in 3-Hydroxyisobutyric Aciduria: A Retrospective Cohort Study. Pediatr Neurol. 2019;95:42-49.
Anderson DM, Brown N, Singh P, Lee JO. Neurodevelopmental Outcomes in Rare Metabolic Disorders: A Systematic Review and Meta-Analysis. Metab Brain Dis. 2022;37(6):1823-1837.
Medication Comparisons
Compare medications used to treat 3 Hydroxyisobutyric Aciduria C0342737. 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