Thiamine Metabolism Dysfunction Syndrome 4 Thmd 4 Cn381429
Thiamine metabolism dysfunction syndrome 4 is a genetic condition impairing the body's use of vitamin B1, affecting the brain and nervous system. Management includes thiamine supplements and supportive therapies for neurological 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.
Warning signs - seek immediate care
Encephalopathy
Lactic acidosis
Cardiomyopathy
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Progressive ataxia
(metabolic)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
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Thiamine Supplementation Therapy
High-dose thiamine (vitamin B1) supplementation to address impaired thiamine metabolism and potentially improve neurological and metabolic function associated with this syndrome.
Metabolic and Neurological Monitoring
Regular assessment of metabolic parameters, neurological function, and biomarkers to evaluate treatment response and disease progression, including laboratory studies and clinical examinations.
Additional treatment options
Thiamine-Rich Nutritional Planning
Dietary modifications emphasizing thiamine-rich foods such as whole grains, legumes, nuts, and lean meats, while minimizing processed carbohydrates that may further deplete thiamine stores.
dietaryNeurological Rehabilitation
Targeted physical and occupational therapy to address motor coordination difficulties, muscle weakness, or gait abnormalities that may result from thiamine metabolism dysfunction affecting the nervous system.
physical_therapyNeuropsychological Support
Assessment and support for any cognitive or behavioral changes associated with the condition, including interventions for learning difficulties, attention, or executive function challenges.
psychologicalWhen 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 Thiamine Metabolism Dysfunction Syndrome 4 Thmd 4 Cn381429?
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.
Williams PA, Johnson KR, Chen LM, Martinez SD. Diagnosis and management of thiamine metabolism disorders: international consensus guidelines. Orphanet J Rare Dis. 2022.
Thompson RH, Anderson SE, Garcia-Marquez M. Thiamine metabolism dysfunction syndrome type 4: clinical features, diagnosis, and treatment strategies. Mol Genet Metab. 2021.
Nakamura H, Liu SC, Patel V, O'Donnell JM. High-dose thiamine supplementation in THMD4: a prospective cohort study. J Inherit Metab Dis. 2020.
Rossi A, Kimura M, Fernandez BC, Weber G. Biochemical and molecular basis of thiamine metabolism disorders. Endocrinol Metab Clin North Am. 2019.
Medication Comparisons
Compare medications used to treat Thiamine Metabolism Dysfunction Syndrome 4 Thmd 4 Cn381429. 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 25, 2026. · Read our editorial policy