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Autoimmune encephalopathies.

Steven Vernino1, Michael Geschwind, Bradley Boeve

  • 1Department of Neurology, UT Southwestern Medical Center, Dallas, Texas 75390-9036, USA. steven.vernino@utsouthwestern.edu

The Neurologist
|May 15, 2007
PubMed
Summary
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Autoimmune encephalopathies cause rapid cognitive decline and are often missed. Early diagnosis using EEG, MRI, and CSF, followed by immunomodulatory treatment, can lead to successful outcomes.

Area of Science:

  • Neurology
  • Immunology
  • Neuroscience

Background:

  • Evaluating patients with progressive cognitive and behavioral issues is complex.
  • Differential diagnoses include prion disorders, degenerative dementias, and subacute encephalopathies.
  • Autoimmune mechanisms are recognized causes of potentially reversible encephalopathies.

Purpose of the Study:

  • To review the clinical features of potentially reversible autoimmune encephalopathies.
  • To highlight characteristic presentations and diagnostic tools for these conditions.

Main Methods:

  • Review of clinical features and serological markers of autoimmune encephalopathies.
  • Discussion of diagnostic modalities including EEG, MRI, and CSF examination.

Related Experiment Videos

Main Results:

  • Autoimmune limbic encephalitis (paraneoplastic and nonparaneoplastic) presents with memory loss, seizures, and psychiatric symptoms.
  • Morvan syndrome involves behavioral changes, insomnia, and neuromyotonia.
  • Hashimoto encephalopathy can present with cognitive impairment, tremors, and seizures, responding to corticosteroids.

Conclusions:

  • Autoimmune encephalopathies are under-recognized causes of rapid cognitive decline.
  • EEG, MRI, CSF, and serological tests are crucial for diagnosis.
  • Increased clinical suspicion facilitates successful diagnosis and treatment.