A historian challenges a labor-history fable. Timothy Messer-Kruse doesnât remember her name, but the question she asked in his college classroom a dozen years ago changed his career â and now it may revolutionize everything historians thought they knew about a hallowed event in the imagination of the American Left.
Though the effects of the disease are similar, there are two main types. 1  Early-onset Alzheimer's. This type happens to people who are younger than age 65. 2  Late-onset Alzheimer's. This is the most common form of the disease, which happens to people age 65 and older.
Dementia is a broad term that refers to a deterioration in brain functioning. It can include thought processes, judgment, reasoning, memory, communication and behavior. Dementia is a broad category, while Alzheimerâs disease is a specific type, and the most common cause, of dementia. Other kinds of dementia include Huntingtonâs disease, frontotemporal degeneration, vascular disease, Creutzfeldt-Jakob disease, and Parkinsonâs dementia.