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Content updated on May 23, 2022
Alzheimer's disease is the most common cause of dementia. The brain shrinks affecting memory and behavior. Symptoms worsen over time, and can interfere with daily life. Increasing age increases the risk for Alzheimer dementia.
Prion disease
A family of rare progressive degenerative brain disorder which are caused by an abnormal infectious protein called a prion. Most cases occur for unknown reasons and sometimes it is spread by infected meat products.
Lewy Body Dementia
Lewy body dementia (LBD) is a brain condition caused by deposits of a protein called alpha-synuclein. These deposits, known as Lewy bodies, they alter brain chemistry, which can result in issues with thinking, movement, behaviour, and mood.
Your doctor may ask these questions to check for this symptom
Do you speak less frequently, or with fewer words nowadays?
Do you have a fever?
Do you get tired easily?
Do you have nausea or vomiting?
Are there people around you with the same symptoms?
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Developed by doctors.
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Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan