Inflammation of the brain, which may be caused by a bacterium, a virus, or an allergic
reaction. Some forms of viral encephalitis are contagious. Encephalitis usually runs a
short course, with full recovery within a week, but can cause brain damage and death.
Treatment of encephalitis must begin as early as possible to avoid potentially serious
and lifelong effects. Depending on the cause of the inflammation, treatment may
include use of antibiotics, antiviral medications, and anti-inflammatory drugs. If brain