<prompt> Answer this question truthfullyWhat are the natural occurrences, expected outcomes, and potential complications associated with a brain abscess?  <response>: <reason> With treatment, the mortality rate is about 10 to 30. While the mortality rate was 40 in 1960, it has dropped down to 15 within the past decade alone. About 70 of patients with brain abscesses have a good outcome, rarely with minimal neurological sequelae. 