Which of the following statements correctly contrasts Alzheimer's and Parkinson's Disease? Alzheimer's is a neurological disorder while Parkinson's is a physical one.
Alzheimer's affects only individuals over 70 while Parkinson's can strike at any age.
Parkinson's affects primarily the systems in the brain that affect movement while Alzheimer's affects other systems first.
Parkinson's causes tangles of damaged neurons while Alzheimer's causes overall atrophy of the brain.

You are assessing an 86-year-old postoperative patient who has an unexpressive, stoic demeanor. when you enter the room, the patient is curled into the fetal position and your assessment reveals that his vital signs are elevated and he is diaphoretic. you ask the patient what his pain level is on a 0-to-10 scale that you explained to the patient prior to surgery. the patient indicates a pain level of “three or so.” you review your pain-management orders and find that all medications are ordered prn. how would you treat this patient's pain?