Catatonia in the Setting of Hyponatremia

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To the Editor: Hyponatremia can manifest in a wide array of clinical symptoms, including those of catatonia. The correction of hyponatremia, however, does not necessarily resolve the catatonic symptoms. We present a case of catatonia in the setting of hyponatremia in a middle-aged woman who remained catatonic after her sodium levels were normalized.