Mitochondrial Complex I Deficiency Nuclear Type 37 C5543281
A genetic condition affecting the mitochondria's energy-producing machinery. Children are typically affected early in life. Care focuses on symptom management and supporting organ function.
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
Lactic acidosis
Seizures
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Muscle weakness (hypotonia)
(metabolic)Developmental delay
(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
Dichloroacetate (DCA) Therapy
DCA activates the pyruvate dehydrogenase complex and may help reduce elevated lactate levels common in complex I deficiency. Considered an emerging targeted therapy approach.
Drug therapy with clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Intensive Care Coordination
Centralized care coordination ensuring regular specialist consultations, emergency care protocols, and smooth transitions between inpatient and outpatient settings.
Additional treatment options
Branched-Chain Amino Acid Modification
Dietary manipulation of branched-chain amino acids may benefit mitochondrial function. Requires careful monitoring to prevent amino acid deficiencies.
dietaryRespiratory Support Planning
Assessment and planning for potential respiratory support including nocturnal non-invasive ventilation. Addresses muscle weakness affecting respiratory function.
surgicalAcupuncture and Traditional Approaches
Complementary approaches including acupuncture may help with symptom management including fatigue, pain, and muscle discomfort. Should complement rather than replace conventional care.
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 Mitochondrial Complex I Deficiency Nuclear Type 37 C5543281?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Mitochondrial Complex I Deficiency Nuclear Type 37 C5543281. 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