Which of the following is NOT a characteristic of Alzheimer's disease?

Extreme fatigue is not a characteristic of Alzheimer's disease. Alzheimer's primarily affects cognitive functions, which include memory loss, disorientation, and deterioration of intellectual capabilities. Patients typically experience difficulties in remembering recent events, confusion about the time and place, and challenges in reasoning and problem-solving.

Extreme fatigue, however, is generally associated with other conditions and is not a direct symptom or characteristic of Alzheimer's. This distinction is important because it helps in accurately identifying and diagnosing the disease, ensuring that those affected receive appropriate care and support for the cognitive impairments that are hallmarks of Alzheimer's.