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Related Concept Videos

Dementia01:30

Dementia

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Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual....
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Alzheimer's Disease: Overview01:26

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Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
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Amnesia01:13

Amnesia

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Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
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Alzheimer's Disease: Treatment01:22

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Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
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Diagnostic and Statistical Manual of Mental Disorders (DSM)01:27

Diagnostic and Statistical Manual of Mental Disorders (DSM)

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The Diagnostic and Statistical Manual of Mental Disorders (DSM) serves as the primary classification system for mental health disorders, providing standardized diagnostic criteria for clinicians and researchers. First published by the American Psychiatric Association (APA) in 1952, the DSM has undergone several revisions to reflect evolving psychiatric understanding. The fifth edition, DSM-5, released in 2013, introduced key updates that expanded diagnostic categories and modified diagnostic...
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Parkinson's Disease: Overview01:15

Parkinson's Disease: Overview

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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
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Related Experiment Video

Updated: Apr 12, 2026

Symmetric Bihemispheric Postmortem Brain Cutting to Study Healthy and Pathological Brain Conditions in Humans
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Dementia: definitions and types.

Tom Dening1, Malarvizhi Babu Sandilyan

  • 1Institute of Mental Health, University of Nottingham, Nottingham, England.

Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
|May 14, 2015
PubMed
Summary
This summary is machine-generated.

This article introduces dementia, defining the condition and exploring its various types. Future articles will cover brain effects, symptoms, diagnosis, treatment, and nursing care for dementia patients and their families.

Keywords:
Alzheimer’s diseasedementiadementia with Lewy bodiesfrontotemporal dementiarisk factorsvascular dementia

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Area of Science:

  • Neurology
  • Gerontology
  • Public Health

Background:

  • Dementia is a growing global health concern, affecting millions worldwide.
  • Understanding dementia's definition and types is crucial for effective management and care.
  • This article serves as the foundational piece in a comprehensive series on dementia.

Purpose of the Study:

  • To provide a clear definition of dementia.
  • To outline the different classifications and types of dementia.
  • To establish a framework for subsequent discussions on dementia's impact and care.

Main Methods:

  • Literature review of existing definitions and classifications of dementia.
  • Synthesis of information from reputable neurological and geriatric sources.
  • Introductory overview format for a multi-part series.

Main Results:

  • Dementia is characterized as a syndrome, not a specific disease, involving decline in cognitive functions.
  • Key types of dementia, such as Alzheimer's disease, vascular dementia, and Lewy body dementia, are introduced.
  • The heterogeneity of dementia presentation and progression is highlighted.

Conclusions:

  • A foundational understanding of dementia definition and types is essential for healthcare professionals and the public.
  • This introductory article sets the stage for in-depth exploration of dementia in subsequent publications.
  • Early and accurate identification of dementia types can inform tailored care strategies.