This book provides a unique insight into the clinical features and prognosis of late onset Alzheimer's disease. It provides a summary of the results of a longitudinal study of patients suffering from Senile Dementia of the Alzheimer type. Various aspects of the late onset Alzheimer's disease are examined in depth, including psychiatric symptoms, behavioural disturbances, neurological signs, and patterns of survival.This study is unique in that it provides a representative sample of sufferers from a defined catchment area population, all of whom have been rigorously examined using standardized resources and assessments. The book includes an up-to-date review of relevant literature, and a detailed description of the clinical typography and natural history of this important and fascinating condition.