Suicide attempt by clandestine self-induced water intoxication: rapid clinical response averts life-threatening acute cerebral edema

Background: Water intoxication can induce life-threatening hypotonic encephalopathy. If undiagnosed or inadequately treated, cerebral edema can progress to brain death due to uncal herniation. We report herein a patient with refractory depression who was found unresponsive because of clandestine self-induced water intoxication. Emergent infusion of intravenous hypertonic (3%) saline rapidly restored consciousness, leading to a full recovery without complications.

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