TY - CHAP M1 - Book, Section TI - CHRONIC AND RECURRENT MENINGITIS A1 - Koroshetz, Walter J. A1 - Nath, Avindra A2 - Hauser, Stephen L. A2 - Josephson, S. Andrew PY - 2018 T2 - Harrison's Neurology in Clinical Medicine, 4e AB - Chronic inflammation of the meninges (pia, arachnoid, and dura) can produce profound neurologic disability and may be fatal if not successfully treated. Chronic meningitis is diagnosed when a characteristic neurologic syndrome exists for >4 weeks and is associated with a persistent inflammatory response in the cerebrospinal fluid (CSF) (white blood cell count >5/μL). The causes are varied, and appropriate treatment depends on identification of the etiology. Five categories of disease account for most cases of chronic meningitis: (1) meningeal infections, (2) malignancy, (3) autoimmune inflammatory disorders, (4) chemical meningitis, and (5) parameningeal infections. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/24 UR - neurology.mhmedical.com/content.aspx?aid=1147190306 ER -