🦠microbiology review

Meningoencephalitis

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Meningoencephalitis is the inflammation of both the meninges and the brain tissue, often caused by infections such as bacteria, viruses, fungi, or parasites. It can lead to severe neurological damage and requires prompt medical attention.

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5 Must Know Facts For Your Next Test

  1. Common symptoms include headache, fever, neck stiffness, altered mental status, and seizures.
  2. The condition can be diagnosed through lumbar puncture (spinal tap) and imaging studies like MRI or CT scans.
  3. Treatment varies depending on the cause but may include antiviral or antibacterial medications, antifungal drugs, and supportive care.
  4. Parasitic meningoencephalitis can be caused by organisms such as Naegleria fowleri and Toxoplasma gondii.
  5. Prognosis depends on the speed of diagnosis and treatment; delayed treatment can result in permanent brain damage or death.

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