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Brain Abscess

Focal suppurative collection within brain parenchyma due to bacterial, fungal, or parasitic infection, requiring early diagnosis with MRI, prompt antimicrobial therapy, and frequently neurosurgical drainage to prevent neurologic disability and death.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Nöroloji department. Book Appointment →

What is Brain Abscess?

Brain abscess is a localized infection within brain tissue progressing through cerebritis to capsule formation over 1 to 3 weeks, most commonly caused by streptococci, staphylococci, anaerobes, gram-negative organisms, and in immunocompromised hosts by Toxoplasma, Aspergillus, Cryptococcus, and Nocardia.

Routes of infection include contiguous spread (otitis, sinusitis, dental), hematogenous (endocarditis, pulmonary, dental procedures), or direct (penetrating trauma, neurosurgery).

Diagnosis requires brain MRI with contrast and diffusion-weighted imaging showing classic ring-enhancing lesion with restricted diffusion, supplemented by stereotactic aspiration for microbiology.

Symptoms

Headache progressing over days to weeks
Fever in only about 50 percent of cases
Focal neurologic deficit such as hemiparesis or aphasia
Seizures in 25 to 35 percent of patients
Altered mental status, papilledema, or signs of raised intracranial pressure

Risk Factors

Otitis media, sinusitis, mastoiditis, or dental infection
Cyanotic congenital heart disease and right-to-left shunts
Endocarditis or systemic bacteremia
Penetrating head trauma or post-neurosurgical infection
Immunocompromised state — HIV, transplant, chemotherapy

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • New severe headache with fever or focal deficit
  • Worsening headache and altered consciousness
  • Recent dental, sinus, or ear infection followed by neurologic symptoms
  • Imaging showing ring-enhancing brain lesion

Treatment Methods

01
Empiric broad-spectrum antibiotics — ceftriaxone or cefotaxime, metronidazole, and vancomycin pending cultures
02
Stereotactic aspiration or open drainage when abscess is over 2.5 cm or near eloquent areas
03
Targeted antimicrobial therapy for 4 to 8 weeks based on culture results
04
Anticonvulsant prophylaxis or treatment of seizures and management of raised intracranial pressure
05
Treatment of source — sinus, ear, dental, or systemic infection — and follow-up imaging to confirm resolution

Which Department to Visit?

You can visit our Nöroloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.