Common and uncommon etiologies of hypoglycorrhachia

Etiologies commonly associated with hypoglycorrhachia	Etiologies uncommonly associated with hypoglycorrhachia (reported but not typical)
Infectious causes
Bacterial meningitis (including Nocardia and Brucella)* Fungal meningitis* Mycobacterial (tuberculous) meningitis* Amebic meningoencephalitis Cytomegalovirus-associated progressive polyradiculopathy or meningoencephalitis	Syphilitic meningitis Lyme meningitis* Viral meningitis Neurocysticercosis* CNS toxoplasmosis
Noninfectious causes
Carcinomatous meningitis* Glucose transporter 1 deficiency Leukemia/lymphoma with CNS involvement* Subarachnoid hemorrhage*	Cholesterol-induced leptomeningitis secondary to Currarino syndrome* Neurosarcoidosis* Rheumatoid meningitis Systemic lupus erythematosus with CNS involvement Neuro-Behçet's disease Dermoid cyst* Granulomatous angiitis of the central nervous system Malignant atrophic papulosis Salicylate toxicity (uncertain association)

CNS: central nervous system.
* Etiologies reported to cause severe hypoglycorrhachia, generally defined as cerebrospinal fluid glucose level ≤10 mg/dL.

Original figure modified for this publication. Chow E, Troy SB. The differential diagnosis of hypoglycorrhachia in adult patients. Am J Med Sci 2014; 348:186. Table used with the permission of Elsevier Inc. All rights reserved.

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Common and uncommon etiologies of hypoglycorrhachia