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Review
. 2021 Mar 1;60(5):789-793.
doi: 10.2169/internalmedicine.5628-20. Epub 2020 Sep 30.

Streptococcus oralis Meningitis with Gingival Bleeding in a Patient: A Case Report and Review of the Literature

Yuki Nakamura  1 , Tomohiro Uemura  1 , Yuka Kawata  1 , Bungo Hirose  1 , Rika Yamauchi  1 , Shun Shimohama  2
Affiliations
Review

Streptococcus oralis Meningitis with Gingival Bleeding in a Patient: A Case Report and Review of the Literature

Yuki Nakamura et al. Intern Med. .

Abstract

An 81-year-old man with a history of gingival bleeding presented with a fever, headache, and drowsiness. His mouth and full dentures were unsanitary. Laboratory tests revealed Streptococcus oralis meningitis caused by odontogenic bacteremia. We reviewed eight reported cases, including the present case, because S. oralis meningitis is rare. Our review indicated that S. oralis meningitis needs to be considered when encountering cases of a fever, disturbance of consciousness, and headache with episodes of possible odontogenic bacteremia.

Keywords: Streptococcus oralis; gingival bleeding; hematogenous transmission; meningitis; odontogenic bacteremia; poor oral hygiene.

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Conflict of interest statement

The authors state that they have no Conflict of Interest (COI).

Figures

Figure.
Figure.
Findings from magnetic resonance imaging (MRI) of the brain on admission. Diffusion-weighted imaging (A) and T2*-weighted imaging (B) show no signal-intensity abnormalities. Fluid-attenuated inversion recovery (C, D) shows neither edematous changes in the brain nor ventricular enlargement. Three-dimensional time-of-flight magnetic resonance angiography shows arteriosclerotic change (E). Contrast-enhanced MRI was not performed due to the renal function being reduced by chronic kidney disease.
See this image and copyright information in PMC

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