To establish diagnosis, patient must have both 1 and 2 and either 3 or 4.
Recognition of a patient's state of confusion is only the beginning of a
clinical odyssey that can implicate a huge spectrum of diagnostic
possibilities. Among these are delirium, depression, dementia, and sensory
deprivation. However, with appropriate physical examination and laboratory
studies, collateral history, and clarification of time course for the symptom
complex, the cause of confusion need not remain confusing.
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