Brain abscess

Medium urgency
-Moderately severe

It is a build-up of pus in the brain, due to an infection which produces a focal inflammation.

The infections is usually produced by bacteria or fungi. The origin of the infection may be local or at a distance, infecting the brain through the blood.

The most common symptoms are changes in mental state, decreased strength, loss of strength, altered sensation, fever, chills, headache and seizures.

It is diagnosed by taking a complete medical history, physical examination, laboratory tests and CT-scan.

Treatment is antibiotic or antifungal, depending on the pathogenic agent. In selected cases, the pus may be drained by puncture and/or neurosurgery.

Bibliographic references
  1. Frederick S Southwick. Pathogenesis, clinical manifestations, and diagnosis of brain abscess. UpToDate. Dec 04, 2015.
  2. Frederick S Southwick. Treatment and prognosis of bacterial brain abscess.UpToDate. Dec 23, 2015.
  3. Arlotti M, Grossi P, Pea F, et al. Consensus document on controversial issues for the treatment of infections of the central nervous system: bacterial brain abscesses. Int J Infect Dis 2010; 14 Suppl 4:S79.
  4. Brouwer MC, Tunkel AR, McKhann GM 2nd, van de Beek D. Brain abscess. N Engl J Med 2014; 371:447.
  5. Elena Sánchez Maganto, Agustín Julián Jiménez. Infecciones del sistema nervioso central. Manual de protocolos y actuación en urgencias. Hospital Virgen de la Salud, Complejo Hospitalario de Toledo. Tercera edición. 2010. 697:716
  6. Karen L. Roos, Kenneth L. Tyler. Meningitis, encefalitis, abceso cerebral y empiema. Harrison. Principios de Medicina Interna. Volumen 2. 19º Edición. 883:906.
Author
Dr. Oscar Garcia-Esquirol
Copyright
© TeckelMedical 2026

Symptoms

    Neurological symptoms: impaired speech, physical strength or feeling


    Seizures


    Diminished state of consciousness


    Fever / Feel very hot


    Headache

Pre-hospital care recommendations

Take over-the-counter pain relievers or anti-inflammatories.
Use antiemetics if vomiting occurs.
Keep calm.
In case of convulsions, it is important to prevent the person from hitting their head. To do this, the person should be placed on their side and no object or hand should be placed in their mouth.