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Acute blindness
  1. H Abboud1,
  2. C Sabbagh2
  1. 1
    Department of Neurology, Hotel Dieu de France Hospital, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
  2. 2
    Emergency Unit, Hotel Dieu de France Hospital, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
  1. Dr H Abboud, Department of Neurology, Hotel Dieu de France Hospital, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon; halimabboud{at}yahoo.fr

Abstract

A 15-year-old man presenting with cortical blindness as the initial symptom of mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS) is reported. He showed fluctuating consciousness and severe occipital headache with nausea and vomiting. T2 and diffusion-weighted magnetic resonance imaging showed high signal intensity in the occipital lobes. Electroencephalography showed diffuse sharp waves with focal epileptic discharges over the posterior region. The nature of stroke-like episodes and seizure mechanisms is unexplained in MELAS. Consequently, the possible mechanisms of the cortical blindness in this case are discussed.

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Footnotes

  • Competing interests: None.

  • Patient consent: Obtained.

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