Delusions in dementia: a review.

A number of psychiatric phenomena complicate dementia. The author suggests that if we are to understand and manage these noncognitive, neuropsychiatric manifestations, they need to be studied individually rather than in a global fashion. As one example of these phenomena, delusions complicating dementia are reviewed. Nosology, phenomenology, epidemiology, clinical characteristics, treatment, and course are discussed. Ideas for future research are suggested.