Viral (aseptic) meningitis (6) Most common form of acute meningitis Clinical Manifestations: Headache, photophobia, neck stiffness, fever, irritability Pathology: May be no abnormality or a mild lymphocytic infiltrate in subarachnoid space and mild edema may be present Causes: HSV virus, coxsackie virus, echoviruses, and arboviruses Lab findings: Lumbar puncture shows lymphocytosis, mildly elevated protein, and normal glucose Treatment: Self-limiting illness; acyclovir for HSV meningitis N.B. Viral encephalitis refers to infection of brain and/or meninges (meningoencephalitis)  It can be caused by many organisms, including arboviruses, herpes, cytomegalovirus, rabies, and poliovirus  Histopathologically, glial nodules, inclusion bodies in neurons, and perivascular mononuclear cell infiltrates are seen Marc Imhotep Cray, M.D.
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