What causes pachymeningitis (perimeningitis)?

Updated: Jul 16, 2019
  • Author: Rodrigo Hasbun, MD, MPH; Chief Editor: Michael Stuart Bronze, MD  more...
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As indicated by the presence of abundant pus, pachymeningitis most often results from a bacterial infection (usually staphylococcal or streptococcal) that is localized to the dura. The organisms most often gain access to the meninges via a skull defect (eg, a skull fracture) or spread from an infection of the paranasal sinuses or cranial osteomyelitis.

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