A community health nurse is providing teaching to the family of a client who has primary dementia. Which of the following manifestations should the nurse tell the family to expect?

A. Forgetfulness gradually progressing to disorientation: Primary dementia (such as Alzheimer's disease) is a progressive, irreversible neurological disorder. It typically begins with short-term memory loss (forgetfulness) and progresses to confusion about time and place (disorientation), eventually affecting long-term memory and functional abilities. B. Decreased auditory and visual acuity: While sensory decline is common in older adults, it is a part of normal aging or specific sensory disorders, not a direct manifestation of dementia pathology. C. Personality traits that are opposite of original traits: While personality changes occur, they often manifest as an exaggeration of previous traits (e.g., a slightly anxious person becomes paranoid) rather than a complete reversal to the opposite. D. Decreased display of emotions: Clients with dementia often exhibit labile moods (rapid mood swings) or intense emotional outbursts, rather than a flat affect or decreased display of emotion, especially in the early to middle stages.