Objective: MELAS (mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes) is a neurodegenerative disorder caused by mitochondrial dysfunction. Multiple systems of the body, including cognitive function and heart conduction, can be affected by this disorder. We report a case with global cognitive impairment.
Method: A single-case report.
Results: The patient got improved cognitive function, especially visuospatial function, under coenzyme Q10 treatment.
Conclusion: First, coenzyme Q10 may give some benefit to control MELAS. Second, cognitive functions and intellectual abilities decline with disease progression. Routine neuropsychological tests should be performed.