"What's the difference between Alzheimer's and dementia?" I hear that question constantly. Doctors see another version of this confusion: "It looks like dementia," they say. Then the patient (or a family member) replies with relief, "At least it's not Alzheimer's!"
Of course, Alzheimer's is dementia (though not all dementia is Alzheimer's). What's in a name, anyway? Does it matter what we call this brain-wreck of a disease?