Pneumococcal Meningovasculitis: A Deadly Foe.

Meningitis is an inflammation of the protective membranes surrounding the brain and spinal cord, typically caused by viral or bacterial infections. Bacterial meningitis is a medical emergency requiring prompt diagnosis and treatment, which is associated with a significant mortality rate, even with optimal care. We report the case of a previously healthy 57-year-old man who presented to the emergency department with a three-week history of fever, dry cough, myalgia, fatigue, weakness, anorexia, and excessive sweating. Physical examination revealed a tympanic temperature of 38.9ºC, leukocytosis with neutrophilia, and elevated C-reactive protein levels. A computed tomography (CT) scan of the chest, abdomen, and pelvis showed consolidations in the left lung with air bronchograms and ground-glass opacities. His condition rapidly deteriorated with progressively higher fever, neck stiffness, positive Kernig and Brudzinski signs, profuse sweating, and altered mental status with a Glasgow Coma Scale (GCS) of 8, requiring non-invasive ventilation. He was thus admitted to the intensive care unit (ICU) on the second day of hospitalization. Lumbar puncture confirmed Streptococcus pneumoniae in the cerebrospinal fluid culture, supporting the diagnosis of pneumococcal meningitis. Electroencephalogram (EEG) findings were consistent with severe encephalopathy, while a follow-up CT scan revealed bilateral temporal hypodensities extending into the brainstem, suggestive of ischemic lesions of a vasculitic nature. Magnetic resonance imaging (MRI) confirmed multiple acute ischemic lesions throughout the brain and brainstem, along with signs of leptomeningitis and purulent collections in the lateral ventricles. Despite receiving 14 days of antibiotic therapy and intensive medical efforts, the patient showed no clinical improvement and ultimately succumbed to the infection. This case highlights the critical importance of early recognition and diagnosis of meningitis, as delayed treatment can lead to devastating outcomes. Continuous monitoring and a low threshold of suspicion are key elements for preventing fulminant central nervous system infections.