Mitochondrial Encephalomyopathy With Lactic Acidosis and Strokelike Episodes Presenting Before 50 Years of Age

A man in his 50s presented with a 5-year history of stepwise loss of executive and somato-sensory functions in relation to what was interpreted as 2 previous stroke episodes; he was diagnosed with mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes.