iTech Post | Dementia: How Different Is It From Alzheimer's? iTech Post Dementia is not a disease. It is the general term that describes a group of symptoms that affects mental cognitive tasks like memory and reasoning skills. It is a broad term that Alzheimer's disease can fall under. Alzheimer's is a disease that ... Dementia versus Alzheimer's: What's the difference? Girth alert: Obesity in midlife raises your risk of Alzheimer's Power outage in the brain may be source of Alzheimer's |