Lithium-Associated Hypercalcemia Presenting withNeuropsychiatric Manifestations in a Patient withBipolar Disorder

One of the overlooked adverse effects of lithium treatment is neuropsychiatric manifestations induced by hypercalcemia (LAH).Here, we present the case of a patient, with bipolar disorder under lithium, who presented with neuropsychiatric symptoms thatrevealed hyperparathyroidism-induced hypercalcemia. This case illustrates the importance of monitoring parathyroid functionand calcium levels in patients under lithium, especially in premenopaused women. LAH may mimic symptoms of manicepisodes and should be sought in the case of brutal onset of confusion, anxiety, and/or hallucinations in the course of a bipolardisorder