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Related Concept Videos

Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Dementia01:30

Dementia

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.
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Alzheimer's Disease: Overview01:26

Alzheimer's Disease: Overview

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Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
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Related Experiment Video

Updated: Jul 7, 2026

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains
12:28

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains

Published on: June 3, 2020

Frontotemporal dementia: a clinically complex diagnosis.

Tor Atle Rosness1, Per Kristian Haugen, Ulla Passant

  • 1Norwegian Centre for Dementia Research, Department of Geriatric Medicine, Ullevaal University Hospital, Oslo, Norway. tor.rosness@aldringoghelse.no <tor.rosness@aldringoghelse.no>

International Journal of Geriatric Psychiatry
|February 28, 2008
PubMed
Summary

Diagnosing Frontotemporal dementia (FTD) takes significantly longer than early onset Alzheimer's dementia (AD). Increased awareness of FTD symptoms in healthcare settings is crucial for timely diagnosis.

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Last Updated: Jul 7, 2026

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains
12:28

Abbiategrasso Brain Bank Protocol for Collecting, Processing and Characterizing Aging Brains

Published on: June 3, 2020

Area of Science:

  • Neurology
  • Geriatrics
  • Cognitive Science

Background:

  • Frontotemporal dementia (FTD) and early onset Alzheimer's dementia (AD) are distinct neurodegenerative conditions.
  • Diagnostic delays for FTD can impact patient management and outcomes.

Purpose of the Study:

  • To compare the diagnostic timelines for FTD versus early onset AD.
  • To identify factors contributing to diagnostic delays in FTD.

Main Methods:

  • Retrospective analysis of 89 patients under 65 years old.
  • Inclusion of patients meeting Manchester-Lund criteria for FTD and ICD-10 criteria for early onset AD.
  • Data collected from Norway and Sweden.

Main Results:

  • FTD diagnosis took longer than AD diagnosis, both from illness onset (59.2 months vs. 39.1 months) and first medical visit (34.5 months vs. 25.9 months).
  • A significant proportion of FTD patients (71%) and AD patients (30%) initially received an incorrect non-dementia diagnosis.
  • Diagnostic delays varied between Norway and Sweden for FTD patients.

Conclusions:

  • There is a need for enhanced knowledge of early FTD signs in primary and secondary care.
  • Improving diagnostic accuracy and reducing delays for FTD is essential.
  • Further research into early FTD detection is warranted.