Flavivirus encephalitis

Flavivirus encephalitis include a number of entities which characteristically involve the basal ganglia and thalami

Typically these conditions present with a prodrome which is nonspecific but indicative of a viral infection. Symptoms include fever, myalgia, rash, rigors and/or headache. Eventually CNS symptoms develop, which include dystonia, dyskinesia, tremor drooling, dysarthria and/or seizures 1.

There are over 70 Flaviviruses. Most important include 1-3:

MRI is the modality of choice to evaluate all types of encephalitis.


Although the pattern of involvement varies from agent to agent, in general sites of involvement include 1:

Share article

Article information

rID: 13100
Section: Pathology
Synonyms or Alternate Spellings:
  • Flavivirus encephalitis

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.