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  • Primary amebic meningoencephalitis

    Inflammation of brain and meninges caused by free-living amebae ordinarily found in water, soil, and decaying vegetation. Organisms that can cause primary amebic meningoencephalitis include Naegleria fowleri, Acanthamoeba culbertsoni, and other species of Acanthamoeba. The amebae are acquired by swimming in freshwater lakes and sniffing water into the nasal cavities.  

  • Meningoarteritis

    Inflammation of the meningeal arteries.  

  • Meningitophobia

    A condition simulating meningitis, caused by the fear of contracting meningitis.  

  • Viral meningitis

    Inflammation of the meninges as a result of infection with adenovirus, coxsackievirus, echovirus, human immunodeficiency virus, mumps virus, lymphocytic choriomeningitis virus, polio viruses, and others. Patients report fever, headache, and stiff neck, and the lumbar puncture reveals an excessive number of lymphocytes, typically without a decrease in cerebrospinal fluid glucose levels. Viral meningitis is a…

  • Tuberculous meningitis

    Meningitis resulting from the spread of Mycobacterium tuberculosis to the central nervous system, usually from a primary focus of infection in the lungs.  

  • Traumatic meningitis

    Meningitis resulting from trauma to the meninges.  

  • Serous meningitis

    Meningitis with serous exudation into the cerebral ventricles.  

  • Meningitis serosa circumscripta

    Meningitis accompanied by the formation of cystic accumulations of fluid that simulate tumors.  

  • Pneumococcal meningitis

    Meningitis due to Streptococcus pneumoniae, a disease predominantly found in adults. In the U.S., about 20% of affected patients die. Because of the worldwide emergence of streptococcal resistance to penicillins, chloramphenicol, and cephalosporins, vancomycin, rifampin, and other antibacterial agents are used to treat this infection. Intravenous steroids (e.g., dexamethasone) given at the beginning of therapy…

  • Chronic meningitis

    Inflammation of the meninges, marked by persistent fever, headache, and stiff neck (associated, on lumbar puncture, with cerebrospinal fluid pleocytosis and elevated spinal fluid pressure). The underlying cause of this cluster of findings may be initially difficult to determine. Syphilis, cryptococcosis, human immunodeficiency virus infection, or invasion of the meninges by cancer cells may be…

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