Alzheimer's Disease is a progressive neurological disorder that affects memory, thinking abilities, and behavior. It is the most common form of dementia, characterized by the buildup of amyloid plaques and tau tangles in the brain, which lead to the degeneration and eventual death of nerve cells. At the initial stage, individuals may experience mild memory loss, but as the disease advances, they face challenges in performing daily tasks, communicating, and recognizing loved ones. The exact cause of Alzheimer's is not fully understood, though age and genetics play significant roles. Currently, there is no cure, but treatments can temporarily alleviate symptoms and slow progression. Early diagnosis remains crucial for managing symptoms and improving quality of life for those affected by this debilitating condition. This book explores all the important aspects of Alzheimer’s Disease in the present day scenario. It presents the complex subject of neurological disorders in the most comprehensible and easy to understand language. It will serve as a valuable source of reference for graduate and post graduate students.