How are other arthropod-borne viral encephalitides differentiated from West Nile virus (WNV) infection and encephalitis (WNE)?

Updated: Apr 05, 2021
  • Author: David J Cennimo, MD, FAAP, FACP, AAHIVS; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The clinical presentation of WNE is not unlike other causes of arthropod-borne viral encephalitis (eg, Japanese encephalitis, equine encephalitis), including mental confusion, stupor, or coma. However, the clinical presentation of arthropod-borne viral encephalitis is characterized by rapid onset and severe headache. Arthropod-borne viral encephalitis has some distinctive features that indicate a presumptive clinical diagnosis (as seen in the charts below).

Common encephalitis associations. Common encephalitis associations.
Clinical features of arboviral encephalitis. Clinical features of arboviral encephalitis.

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