In the Sea Services (Navy, Marine Corps and Coast Guard), a Mustang is an Officer who has promoted up from the ranks of Navy enlisted personnel through an in... Skip navigation Sign in
What is Alzheimer's disease? Alzheimer's disease is the most common cause of dementia. The word dementia describes a set of symptoms that can include memory loss and difficulties with thinking, problem-solving or language. These symptoms occur when the brain is damaged by certain diseases, including Alzheimer's disease.
The most common causes of dementia include: 1  Degenerative neurological diseases, including Alzheimer's disease, Parkinson's disease, Huntington's disease (a rare inherited disorder), and some types of multiple sclerosis. 2  Vascular disorders, such as multi-infarct dementia, which is caused by multiple strokes in the brain. Degenerative neurological diseases, including Alzheimer's disease, Parkinson's disease, Huntington's disease (a rare inherited disorder), and some types of multiple sclerosis.