Increased Neocortical Neurofibrillary Tangle Density in Subjects With Alzheimer Disease and Psychosis

Abstract
ALZHEIMER disease (AD) involves a gradual progressive deterioration in multiple aspects of brain function. Memory loss is common, but disturbances in other aspects of cognition (eg, language, reasoning, mathematical skills, and visuospatial abilities) also occur. While behavioral and neuropsychiatric disturbances such as major depression, personality changes, and psychosis are not required for the clinical diagnosis of AD, they occur frequently and are a common reason for medical intervention and nursing home placement.