A person may sleep at odd hours and wander at night. Stories or actions are repeated monotonously. At this point, patients are totally dependent and require constant care. Confusion is acute. Physical rigidity and seizures may occur.
Patients are totally incontinent.
Eventually, patients are unable to speak, get out of bed or feed themselves. They become susceptible to malnutrition, infections, pneumonia and other illnesses. Depression may have the appearance of early Alzheimer's and goes hand in hand with dementia in about 20 percent of all cases. Frustrated by the symptoms of dementia, the person become depressed, and the depression then worsens the symptoms. Symptoms vary widely but often include disorientation, inattentiveness and changes in personality.