Title: Diagnosis, Differential Diagnosis, Staging and Time Course of Dementia Dr. Istvan J.E. Boksay Clinical Professor New York University USA Abstract The definition of normal aging and an overview of Alzheimer's disease will be presented including the diagnosis and differential diagnosis of dementia. Risk factors to develop Alzheimer's disease will be presented. The clinical features, stages and time course of Alzheimer's disease will be discussed. The global deterioration scale (GDS) will be presented. Biography Dr. Istvan J.E. Boksay, M.D., Ph.D., is a Clinical Professor of Psychiatry at NYU, U.S.A. where he is a member of the Pharmaceutical and Therapeutic Committee, The Quality Assurance Committee and the Medication Safety Committee. He is a past President of the New Jersey Psychiatric Association and a Distinguished Life Fellow of the American Psychiatric Association. He served several years as a member of the Council on Aging. He is a geriatric psychiatrist, published extensively and lectured worldwide. He did major contributions to describe the course of Dementia and the effect of medical conditions on the course of Dementia. He was the first who reported stage specific medical conditions in demented patients and reported behavioral and cognitive aspects of patients with NPH before and after VP shunt. He graduated Summa Cum Laude from the Semmelweis University of Medical Sciences in Budapest, Hungary and obtained a Doctor of Pharmacology and Toxicology from the University of Frankfurt in German..