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Goswami R.P.,Post Graduate Institute of Medical Education and Research | Mukherjee A.,Post Graduate Institute of Medical Education and Research | Biswas T.,Post Graduate Institute of Medical Education and Research | Karmakar P.S.,Post Graduate Institute of Medical Education and Research | And 2 more authors.
Journal of Infection in Developing Countries | Year: 2012

Dengue, a mosquito-borne disease caused by a flavivirus, is recognized in over 120 countries with 3.6 billion people living in areas at risk. Neurological manifestations are infrequently reported as clinical consequences of dengue infection. Though severe dengue may be associated with meningoencephalitis, meningitis is a rare initial presentation of otherwise uncomplicated dengue fever. We report two adult patients who presented with fever, headache, and nuchal rigidity without the typical symptoms of dengue infection. Cerebrospinal fluid (CSF) analysis showed lymphocytic pleocytosis in one and slight neutrophilic pleocytosis in the other with a normal glucose value and negative bacterial cultures. Dengue was suspected because thrombocytopenia was symptomatic in one patient and documented during the hospital course, and was confirmed by demonstration of IgM antibody in the cerebrospinal fluid samples specific for dengue in both cases. Our report demonstrates that meningitis with or without encephalitis can be the first manifestation of dengue infection. In endemic areas, dengue infection should be considered as a probable etiological agent of meningitis. Regular monitoring of platelet count can be an invaluable diagnostic screening tool. In appropriate clinical settings detection of anti-dengue IgM both in serum and in CSF may lead to correct diagnosis. © 2012 Goswami et al.

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