Etiology
Purulent meningitis
- 18–50 years: S. pneumoniae, N. meningitidis
- >50 years: S. pneumoniae, N. meningitidis, Listeria, gram-negative bacilli
- Impaired cellular immunity: Listeria, gram-negative bacilli, S. pneumoniae
- Postsurgical or posttraumatic: S. aureus, S. pneumoniae, gram-negative bacilli
Aseptic meningitis- Mumps, coxsackievirus, echoviruses
- Infectious mononucleosis
- Leptospirosis, syphilis, Lyme disease
Chronic meningitis- TB or atypical mycobacteria
- Fungi: Cryptococcus, Coccidioides, Histoplasma
- Spirochetes: syphilis, Lyme disease, leptospirosis
- Other: brucellosis, HIV infection, neurocysticercosis
Meningitis has been found in Diagnosaurus 2.0
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