According to Wikipedia Alzheimer’s disease (AD), also referred to simply as Alzheimer’s, is a chronic neurodegenerative disease that usually starts slowly and gradually worsens
A broader description is giving in Healthline online magazine. Alzheimer’s disease is a progressive form of dementia. Dementia is a broader term for conditions caused by brain injuries or diseases that negatively affect memory, thinking, and behavior. These changes interfere with daily living.
While there is no known cure for this disease there are treatments that can slow its progression.