Prevalence is highest in adult men younger than 30 years, while paediatric disease occurs most frequently in children ages 4 to 7 years. Neonates comprise a third at-risk group. One systematic review found a male to female ratio of 2.4:1 and a mean age of 34 years.[2] Geographical and seasonal variations do not play a major role. Worldwide prevalence is greater in areas with high rates of HIV infection. Within the industrialised world, brain abscesses make up only a small percentage of space-occupying intracranial lesions, which are mostly caused by primary and metastatic tumours. Approximately 2500 cases of cerebral abscess are diagnosed annually in the US.[3][4]

BMJ Best Practice is an evidence-based point of care tool for healthcare practitioners.

To continue reading and access all of BMJ Best Practice's pages you'll need to log in or start a free trial.

You can access through your institution if your hospital, university, trust or other institution provides access to BMJ Best Practice through either OpenAthens or Shibboleth.

Use of this content is subject to our disclaimer