Mitochondrial Complex I Deficiency Nuclear Type 33 C4748840
A rare genetic disorder caused by defects in nuclear DNA that disrupt mitochondrial energy production. It typically presents in childhood and can affect multiple organ systems. Care is supportive and involves various specialists.
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
Optic atrophy
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Muscle weakness
(musculoskeletal)Failure to thrive
(metabolic)Ataxia
(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
Coenzyme Q10 (CoQ10) Supplementation
CoQ10 serves as an electron carrier in the mitochondrial electron transport chain and may help improve cellular energy production in complex I deficiency. Treatment is typically initiated at diagnosis and continued long-term.
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Ketogenic Diet Therapy
A high-fat, low-carbohydrate ketogenic diet may provide alternative energy sources for neurons and reduce oxidative stress. This metabolic therapy requires careful monitoring by a metabolic specialist and dietitian.
Additional treatment options
Multidisciplinary Monitoring Program
Regular monitoring of cardiac function, neurological status, growth parameters, and metabolic markers through coordinated specialist visits. Early detection of complications allows for timely intervention.
monitoringAdaptive Physical Therapy
Structured physical therapy program designed to maintain muscle strength, improve coordination, and prevent contractures. Therapy is customized based on motor function level and disease progression.
physical_therapyNeuropsychological Support Services
Cognitive and psychological support addressing developmental delays, behavioral concerns, and emotional adjustment. Includes counseling for patient and family members dealing with chronic illness burden.
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 Mitochondrial Complex I Deficiency Nuclear Type 33 C4748840?
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 33 C4748840. 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