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Lithium-Induced Diabetes Insipidus: Manic Symptoms, Brain and Electrolyte Correlates, and Chlorothiazide Treatment

Published Online:https://doi.org/10.1176/ajp.130.9.1014

A patient with lithium-induced, vasopressin-insensitive diabetes insipidus was studied during two consecutive manic episodes that were successfully treated with lithium. Polyuria occurred several days after lithium-induced brain electrical changes were observed, and at serum lithium concentrations close to 1.0 mEq./liter. Polyuria began during a period of behavioral improvement and persisted after the manic symptoms subsided. Polyuria did not occur in association with serum lithium concentrations over 1.8 mEq./liter, and a fourfold increase in sodium intake did not reduce the polyuria. Chlorothiazide reduced polyuria and permitted the patient to continue the lithium treatment.

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