Neurobrucellosis Presented by Cerebral Salt Wasting.

This case reported here was a 27-year-old female patient, and she had no chronic disease other than hypothyroidism. She was brought to the ER with complaints of fever, chills, weakness, and hyponatremia. She has been diagnosed with brucellosis using a serum tube agglutination test (STAT). Cerebrospinal fluid (CSF) analysis and brain MRI findings supported the central nervous system (CNS) involvement of the brucella. Despite intense 3% NaCl hydration, her hyponatremia was persisting. Sodium stabilized on the 14th day when the antibrucellosis treatment effect was settled. Hyponatremia was attributed to cerebral salt wasting (CSW) due to neurobrucellosis.