Brain Abscess Underlying Cause
Brain abscesses are caused by an infection with bacteria, parasites, or fungi.
The most common organisms responsible for brain abscess include:
- Staphylococcus aureus
There are two main ways in which a brain abscess can form:
- Infection of the brain tissue or surrounding structures
- Metastatic spread:
- Spread of organisms via the bloodstream, from another site of infection
Brain Abscess Localized Spread
The majority of brain abscesses result from infection of the structures near the brain.
- Middle ear
- Tissue that surrounds the brain
Brain Abscess Metastatic Spread
Metastatic spread occurs via the bloodstream, from an infection in another location in the body.
Continue to Brain Abscess Anatomy
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- Roche M, Humphreys H, Smyth E, et al. A twelve-year review of central nervous system bacterial abscesses; presentation and aetiology. Clin Microbiol Infect. 2003 Aug;9(8):803-9. 
- Xiao F, Tseng MY, Teng LJ, Tseng HM, Tsai JC. Brain abscess: clinical experience and analysis of prognostic factors. Surg Neurol. 2005 May;63(5):442-9; discussion 449-50. 
- Yogev R, Bar-Meir M. Management of brain abscesses in children. Pediatr Infect Dis J. 2004 Feb;23(2):157-9.