Encephalitis is an acute inflammation of the brain most commonly caused by a viral infection. Encephalitis can occur from a bacterial infection like meningitis or it may possible from other infectious diseases like rabies or syphilis. Certain parasitic protozoal infestations, like toxoplasma or Naegleria fowleri can also cause encephalitis in people with problem immune systems. Brain damage occurs as the inflamed brain pushes against the skull. Find sites offering symptom details diagnosis and treatment information listed here.