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Jul 10, 2024 · Overview. Dementia is a term used to describe a group of symptoms affecting memory, thinking and social abilities. In people who have dementia, the symptoms interfere with their daily lives. Dementia isn't one specific disease. Several diseases can cause dementia. Dementia generally involves memory loss.
Mar 12, 2022 · Dementia develops when the parts of your brain involved with learning, memory, decision-making or language are affected by infections or diseases. The most common cause of dementia is Alzheimer’s disease. But other known causes of dementia include: Vascular dementia. Dementia with Lewy bodies. Frontotemporal dementia. Mixed dementia.
Jul 4, 2024 · Alzheimer's disease is the most common cause of dementia. About 70%-80% of people with dementia have it. But there are as many as 50 other causes of dementia.
What causes dementia? What are the different types of dementia? How is dementia diagnosed? Who can diagnose dementia? Dementia is the loss of cognitive functioning — thinking, remembering, and reasoning — to such an extent that it interferes with a person's daily life and activities.
Mar 15, 2023 · Key facts. Currently more than 55 million people have dementia worldwide, over 60% of whom live in low-and middle-income countries. Every year, there are nearly 10 million new cases. Dementia results from a variety of diseases and injuries that affect the brain.
Causes. Dementia is caused by a variety of diseases that cause damage to brain cells. This damage interferes with the ability of brain cells to communicate with each other. When brain cells cannot communicate normally, thinking, behavior and feelings can be affected.
Jul 10, 2024 · Alzheimer's disease is the most common cause of dementia — a gradual decline in memory, thinking, behavior and social skills. These changes affect a person's ability to function. About 6.5 million people in the United States age 65 and older live with Alzheimer's disease.
Alzheimer's disease is thought to be caused by the abnormal build-up of 2 proteins called amyloid and tau. Deposits of amyloid, called plaques, build up around brain cells. Deposits of tau form "tangles" within brain cells.
Jun 29, 2023 · Dementia may be caused by a variety of illnesses or injuries. Mental impairment may range from mild to severe. It may also cause personality changes. Some types of dementia are progressive....
The causes of dementia can vary depending on the types of brain changes that may be taking place. Other forms of dementia include Lewy body dementia, frontotemporal disorders, and vascular dementia. It is common for people to have mixed dementia — a combination of two or more types of dementia.
