Review Article
Azza A Ali
Abstract
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder that leads to memory loss and nerve cell death throughout the brain. It is the most common cause of dementia and represents the most important problem in elderly. Dementia characterized mainly by decline in memory, cognitive skills and ability to perform everyday activities as well as behavioral dysfunction. The decline occurs because neurons involved in cognitive function have been destroyed and affected other parts of the brain involved in different basic bodily functions.