Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/30/2025

Management of Bickerstaff Brainstem Encephalitis

Initial Assessment and Stabilization

  • Obtain urgent neurological specialist assessment within 24 hours of presentation, as patients with encephalitis require specialized neurological care to optimize morbidity and mortality outcomes 1
  • Assess for airway protection and ventilatory support needs immediately in patients with declining consciousness, as BBE can cause rapid deterioration requiring ICU-level care for management of raised intracranial pressure and cerebral perfusion optimization 1

Diagnostic Workup

  • Obtain MRI of the brain within 48 hours (preferred over CT), as neuroimaging is essential for diagnosis and patients with neuroimaging changes require longer recovery time 1
  • Perform lumbar puncture for CSF analysis with results ideally available within 24-48 hours, as this is critical for confirming diagnosis 1
  • Consider EEG when distinguishing organic versus psychiatric causes or when subtle seizures are suspected, as EEG is abnormal in >80% of encephalitis cases 1

Immunotherapy Treatment Options

  • High-dose intravenous methylprednisolone (1 g IV daily for at least 3-5 days) is recommended for immune-mediated encephalitis, including BBE 2
  • Plasma exchange should be considered in patients who respond poorly to corticosteroids, though IVIg may be preferred when plasma exchange is difficult or contraindicated 2

Treatment Algorithm

  • Add plasma exchange if inadequate response to initial immunotherapy within 3-5 days 2

Discharge and Follow-up Planning

  • Arrange comprehensive rehabilitation assessment before discharge, as sequelae may not be immediately apparent and patients commonly experience ongoing complications including cognitive deficits 1
  • Ensure definite or suspected diagnosis is established and formulate clear plans for outpatient follow-up, ongoing therapy, and rehabilitation at a discharge meeting 1

REFERENCES

1

Management of Acute Encephalitis [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025