Mitochondrial Complex 2 Deficiency Nuclear Type 2 C5436933
A rare metabolic disorder affecting energy production in cells, potentially causing neurological and physical symptoms. It varies in severity and often appears in childhood. Treatment is supportive and focuses on symptom management.
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.
Developmental delay
(neurological)Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Dystonia
(neurological)Ataxia
(neurological)Cardiomyopathy
(cardiovascular)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 Supplementation
Ubiquinone supplementation to bypass complex II deficiency and support mitochondrial electron transport. Often combined with other electron carriers.
Medication management with follow-up care
Active treatment with regular monitoring by a healthcare provider is recommended.
Ketogenic Diet
High-fat, low-carbohydrate diet that provides alternative energy substrates through ketone body metabolism, potentially bypassing defective complex II.
Additional treatment options
Riboflavin and B-Vitamin Complex
FAD precursor supplementation supports flavoprotein function including succinate dehydrogenase (complex II) activity. May improve electron transfer efficiency.
medicationMuscle Conditioning Program
Gentle resistance training and aerobic exercise adapted to individual capacity helps maintain muscle mass and function while avoiding overexertion.
physical_therapyMultisystem Function Monitoring
Regular assessment of cardiac, neurological, and muscular function through echocardiography, EEG, and laboratory markers to track disease progression.
monitoringWhen 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 2 Deficiency Nuclear Type 2 C5436933?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy