5-15 day incubation
Sudden, high fever
Headache
Nuchal rigidity and other meningeal signs
Seizure (especially in infants)
Various pyramidal and extrapyramidal signs
Japanese encephalitis
SAH
CMV neurologic disease
Lyme disease
Crimean-Congo hemorrhagic fever
Brain abscess
Viral hemorrhagic fevers
Bacterial endocarditis