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The aseptic meningitis syndrome
S Nelsen1, D P Sealy, E F Schneider
1Self Memorial Hospital, Greenwood, South Carolina.
American Family Physician
|October 1, 1993
Summary
Differentiating aseptic meningitis from bacterial meningitis can be difficult for primary care physicians. Identifying the cause is crucial for appropriate treatment, as viral meningitis often requires only supportive care, while bacterial meningitis needs prompt antibiotic intervention.
Area of Science:
- Neurology
- Infectious Diseases
- Primary Care Medicine
Background:
- Acute meningitis presents a diagnostic challenge for primary care physicians.
- Distinguishing between bacterial and aseptic meningitis is often complex.
- Aseptic meningitis is commonly viral (enteroviruses), but can stem from atypical bacteria (e.g., Mycobacterium tuberculosis, Leptospira, Brucella, Borrelia).
Purpose of the Study:
- To highlight the diagnostic challenges in differentiating bacterial from aseptic meningitis in primary care.
- To discuss the differential diagnosis of aseptic meningitis.
- To emphasize the importance of identifying the specific cause for appropriate management.
Main Methods:
- Review of classic clinical presentation of meningitis (meningismus, headache, fever, malaise).
- Analysis of cerebrospinal fluid (CSF) findings (pleocytosis, normal glucose, elevated protein).
- Evaluation of diagnostic markers: CSF lactate and serum C-reactive protein (CRP) for differentiating meningitis types.
Main Results:
- Classic meningitis symptoms include acute onset of headache, fever, and meningismus.
- CSF typically shows pleocytosis with normal glucose and slightly elevated protein in aseptic meningitis.
- CSF lactate and serum CRP levels may aid in distinguishing aseptic from bacterial meningitis.
Conclusions:
- Aseptic meningitis of viral origin generally responds to symptomatic treatment.
- Non-viral causes of aseptic meningitis require specific etiological investigation and targeted therapy.
- Accurate diagnosis is essential for guiding treatment strategies in acute meningitis cases.