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Complex partial status epilepticus in late-onset MELAS

A P Leff1, A W McNabb, M G Hanna

  • 1National Hospital for Neurology and Neurosurgery, London, England, UK.

Epilepsia
|May 13, 1998
PubMed
Summary
This summary is machine-generated.

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This case highlights a new association between mitochondrial disorders, specifically MELAS syndrome, and recurrent complex partial status epilepticus (CPSE) with periodic lateralized epileptiform discharges (PLEDs). CPSE should be considered in MELAS patients experiencing acute neurological decline.

Area of Science:

  • Neurology
  • Mitochondrial Medicine
  • Epileptology

Background:

  • Mitochondrial disorders, such as MELAS (Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes), are known to cause neurological dysfunction.
  • Complex partial status epilepticus (CPSE) is a prolonged seizure state characterized by altered consciousness and focal neurological signs.
  • Periodic Lateralized Epileptiform Discharges (PLEDs) on electroencephalogram (EEG) can indicate focal brain injury or dysfunction.

Observation:

  • A patient presented with recurrent episodes of CPSE.
  • The patient exhibited a distinctive EEG pattern of PLEDs.
  • Diagnostic workup revealed the patient had a mitochondrial disorder of the MELAS type.

Findings:

  • This case represents a previously unreported association between MELAS and CPSE with PLEDs.

Related Experiment Videos

  • The clinical presentation and EEG findings were consistent with CPSE in the context of MELAS.

    • Implications:

    • The findings suggest that MELAS should be recognized as a potential underlying cause of CPSE and acute neurological deterioration.
    • Clinicians should consider screening for mitochondrial disorders, including MELAS, in patients presenting with CPSE and PLEDs, especially those with unexplained neurological decline.
    • This association expands the spectrum of neurological manifestations associated with MELAS syndrome.