Alzheimer’s, which accounts for 50- to 70-percent of dementia cases, was first identified in 1906 by Dr. Alois Alzheimer.
He noted a link between “plaques” (dense deposits of the beta amyloid protein that can clump and prevent signals transfer and cell degradation) and “tangles” (fiber clumps of the “tau” protein that can collapse and prevent nutrients from reaching brain cells).
Stages: Early, middle, late, end of life
Symptoms: This is a progressive dementia marked by short-term memory loss, word-naming problems, difficulty with complex tasks, judgement and perception problems, and way-finding difficulties. The person gradually loses the ability for self-care.
Dementia is a medical term used to describe symptoms that cause a decline in cognitive functions—changes in memory, thinking, and social abilities, for example. By definition, these changes are severe enough to affect daily living.
Dementia is not a specific disease—it describes a group of symptoms caused by brain-related illness that affect cognitive function and behaviors.Symptoms: Common symptoms include cognitive and psychological changes:
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