Question

Mr. smith (age 72) is brought to the hospital emergency room. mr. smith's son explains that his father woke up this morning and was "not himself." mr. smith appears confused, agitated, and a bit frightened. he does not know his own name and cannot recognize his son. mr. smith's son reports that his father had been completely fine with no symptoms prior to that morning. mr. smith appears to be suffering from

Answer 1

I believe the answer is: Delirium

Delirium refers to a condition that make the patient become restless, sometimes seeing illusions, and having incoherence of thought and speech.
The most common cause of a Delirium to happen is mostly because because of strong fever or intoxication.