A 28 year old man is brought to the ER of a local hospital by the police, who found him wandering without a coat in subzero weather, muttering about being persecuted by a secret organization. During the evaluation he is disorganized, distractible, and from time to time
dozes off in the middle of a sentence. Family members deny previous psychiatric or substance abuse history, but they add that lately the patient had complained of fatigue and increased thirst. The toxic screen is negative and glucose level is 450 mg/dL.
Choose the most likely diagnosis:
b. Psychotic depression
c. Brief psychotic episode
d. Paranoid schizophrenia
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