A Chain of Events Leading to Posttraumatic Subacute Meningitis

Area of Science:

• Neurology
• Infectious Diseases
• Forensic Pathology

Background:

• Posttraumatic meningitis is rarely reported.
• Streptococcus pyogenes can cause severe infections.

Purpose of the Study:

• To describe a unique case of Streptococcus pyogenes meningitis following head trauma.
• To investigate the potential link between head trauma and subsequent meningitis.

Main Methods:

• Case report of a deceased male with a history of head trauma.
• Computed tomography (CT) scan and autopsy examination.
• Cerebrospinal fluid (CSF) and blood cultures, histology, and toxicology.

Main Results:

• The deceased had Streptococcus pyogenes meningitis 7 days post-head trauma.
• Autopsy showed scalp lacerations, subdural hematoma, and dural defect with purulence.
• Histology confirmed chronic inflammation, ventriculitis, and bacterial vascular involvement.
• Toxicology was positive for methamphetamine, fentanyl, and oxycodone.

Conclusions:

• This is the first reported case linking head trauma to Streptococcus pyogenes meningitis.
• The exact route of infection from trauma to meninges was not definitively identified.
• The findings highlight the potential for severe infections after head trauma, even without obvious fractures.