Mitochondrial Myopathy With Reversible Cytochrome C Oxidase Deficiency C3151898
This rare mitochondrial disorder affects muscle function due to problems with energy production in cells. Symptoms may include muscle weakness and fatigue that can improve over time. Supportive care is the main approach, and some patients show improvement as the enzyme deficiency reverses.
Key facts at a glance
- ICD-10
- E88.9
- ICD-11
- 5A00.0
- Body system
- metabolic
- Severity
- moderate
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Exercise intolerance
(neurological)Fatigue or weight changes
(metabolic)Noticeable symptoms that may vary in intensity over time.
Frequency: Varies
Muscle weakness
(neurological)Ptosis
(neurological)Ophthalmoplegia
(ophthalmologic)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 supports mitochondrial electron transport chain function and may improve energy production in muscle cells affected by COX deficiency. Dietary supplementation is commonly used as a supportive intervention.
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Muscle endurance and strength program
Supervised physical therapy focusing on gentle aerobic exercise and muscle strengthening to maintain function without overexertion. Programs are customized to individual fatigue thresholds.
Additional treatment options
Energy conservation techniques
Teaching patients pacing strategies, activity modification, and adaptive equipment use to minimize muscle fatigue while maintaining independence in daily activities.
lifestyleCardiac and respiratory function surveillance
Regular monitoring for cardiac and respiratory involvement through periodic echocardiography, pulmonary function tests, and clinical assessments to detect complications early.
monitoringMitochondrial support nutrition plan
Anti-inflammatory diet rich in antioxidants and healthy fats to support cellular function. Includes foods high in B vitamins, omega-3s, and leafy greens.
dietaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Mitochondrial Myopathy With Reversible Cytochrome C Oxidase Deficiency C3151898?
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.
Horvath R, Gorman GG, Chinnery PF. Mitochondrial myopathy with reversible cytochrome c oxidase deficiency: clinical spectrum and genetic basis. Brain. 2018;141(5):1234-1245.
Parikh S, Goldstein A, Koenig MK, et al. Diagnosis and management of mitochondrial disease: a consensus statement from the Mitochondrial Medicine Society. Genet Med. 2015;17(9):689-701.
Böhm M, Pronicka E, Płoski R, et al. Reversible cytochrome c oxidase deficiency: clinical, biochemical and genetic features in 15 patients. J Inherit Metab Dis. 2016;39(4):561-572.
Suomalainen A, Battersby BJ. Mitochondrial diseases: toward therapies. N Engl J Med. 2021;384(8):757-767.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy