
Dementia - Symptoms and causes - Mayo Clinic
Jun 7, 2025 · Dementia describes a group of symptoms affecting memory, thinking and social abilities. The symptoms interfere with a person's daily life. Dementia isn't one specific disease. Several …
Dementia: What It Is, Causes, Symptoms, Treatment & Types
Dec 5, 2025 · Dementia involves a decline in the mental abilities you need for daily living. It develops when there’s damage to the parts of your brain involved with learning, memory, decision-making and …
What Is Dementia? Symptoms, Types, and Diagnosis
Dementia is the result of changes in certain brain regions that cause neurons (nerve cells) and their connections to stop working properly. Researchers have connected changes in the brain to certain …
What Does Dementia Do to the Brain? - ScienceInsights
Dementia physically shrinks the brain, kills neurons, and destroys the connections between them. The damage typically begins years before symptoms appear, starting in regions responsible for memory …
What is Dementia? Symptoms, Causes & Treatment | alz.org
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 …
Dementia & the Brain - Memory and Aging Center
The symptoms of dementia vary from person to person and may include memory problems or mood changes or difficulty walking, speaking or finding your way. While dementia may include memory …
Dementia symptoms and areas of the brain - Alzheimer's Society
Learn about the parts of the brain and how dementia damages them, as well as about the symptoms the damage causes. In Alzheimer's disease, among the areas often damaged first are the hippocampus …
The brain explained - Dementia Carers Count
Dementia affects the brain and can lead to difficulties in lots of different areas including memory, communication, vision, movement, sensory perception, managing emotions, planning and …
What Is Dementia? - Alzheimers.gov
Jan 21, 2026 · Dementia is an umbrella term used to describe a range of neurological conditions affecting the brain that worsen over time. It is the loss of the ability to think, remember, and reason to …
Dementia - World Health Organization (WHO)
Mar 31, 2025 · Dementia is a syndrome that can be caused by a number of diseases which over time destroy nerve cells and damage the brain, typically leading to deterioration in cognitive function (i.e. …