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Psychiatry

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Schizophrenia and Other Psychosis

Question
53 out of 57
 

A 62-year-old man with chronic schizophrenia is brought to the emergency room after he is found wandering around his halfway house, confused and disoriented. His serum sodium concentration is 123 meq/L and urine sodium concentration is 5 meq/L. The patient has been treated with risperidone 4 mg/day for the past 3 years with good symptom control. His roommate reports that the patient often complains of feeling thirsty. Which of the following is the most likely cause of this patient’s symptoms?



A Renal failure

B Inappropriate antidiuretic hormone (ADH) secretion

C Addison disease

D Psychogenic polydipsia

Schizophrenia and Other Psychosis Flashcard List

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