Which of the following is a common initial symptom of a brain abscess?

Which of the following is a common initial symptom of a brain abscess?

• A. Fever and chills
• B. Nuchal rigidity
• C. Seizures
• D. Neurological deficits

Answer: (C)

Seizures reflect direct irritation of the brain cortex by the developing abscess and surrounding inflammatory edema. When an abscess forms, inflammatory mediators and mass effect irritate nearby neurons, triggering abnormal electrical activity that manifests as seizures. This cortical irritation can appear early, sometimes before fever or focal neurological signs become evident, making seizures a common initial presenting symptom. Fever and chills are common with infection but may be absent or nonspecific early on, and nuchal rigidity points more to meningitis than to a parenchymal abscess. Neurological deficits depend on the abscess’s location and often develop as it enlarges, so they may come later.

Seizures reflect direct irritation of the brain cortex by the developing abscess and surrounding inflammatory edema. When an abscess forms, inflammatory mediators and mass effect irritate nearby neurons, triggering abnormal electrical activity that manifests as seizures. This cortical irritation can appear early, sometimes before fever or focal neurological signs become evident, making seizures a common initial presenting symptom. Fever and chills are common with infection but may be absent or nonspecific early on, and nuchal rigidity points more to meningitis than to a parenchymal abscess. Neurological deficits depend on the abscess’s location and often develop as it enlarges, so they may come later.