Dementia is not a specific disease but a general term that describes a wide range of symptoms associated with a decline in memory or other thinking skills severe enough to reduce a person’s ability to perform everyday activities.

Alzheimer's disease is the most common form of dementia, accounting for 60%-80% of cases.i

People with dementia have significantly impaired cognitive functioning, which can interfere with everyday activities such as getting dressed or eating. They may also have behavioral problems, such as apathy, psychosis and depression.

Physicians diagnose dementia if two or more of the following brain functions are significantly impairedi:

  • Memory
  • Communication and language
  • Ability to focus and pay attention
  • Reasoning and judgment
  • Visual perception

Alzheimer's Disease

Alzheimer's disease, the most common form of dementia, is a chronic, progressive neurodegenerative disorderi

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LEWY BODY dementia

Lewy body dementia (LBD) is a progressive brain disorder in which Lewy bodies, abnormal deposits of a protein called alpha-synuclein, build up in areas of the brain that regulate behavior, cognition and movement.ii

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  1. Alzheimer's Association. 2017 Alzheimer’s disease facts and figures. Accessed August 15, 2017.
  2. Lewy Body Dementia Association (2013) What is Lewy body dementia? Accessed August 15, 2017.