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Down Syndrome and Alzheimer's Disease

 

As adults with Down syndrome live longer, understanding their increased risk of Alzheimer’s disease has become an important part of supporting healthy aging. Down syndrome–associated Alzheimer’s disease, often called DS-AD, linked in part to an extra copy of chromosome 21, is the most prevalent expression of dementia associated with Down syndrome. Chromosome 21 carries a gene involved in the production of amyloid, a protein that can build up in the brain. Alzheimer’s-related brain changes may be present for years before noticeable symptoms appear, and the age at which symptoms develop and their progression vary among individuals.

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Early signs of DS-AD may include changes in mood, personality, behavior, or the ability to manage familiar activities. Memory problems may also develop. Recognizing these changes requires knowing the person’s usual abilities and observing how they change over time. Other health conditions—including hearing or vision loss, thyroid problems, depression, and sleep disorders—can also affect functioning and should be considered during an evaluation. Seizures that begin in adulthood may also occur and warrant medical attention.

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Although research into biomarkers and new treatments is advancing, further study is needed to determine how best to use them in adults with Down syndrome. Meanwhile, thoughtful health care, meaningful activities, adaptations to the person’s surroundings, and support for family and professional caregivers can help maintain well-being and quality of life.

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The publications noted below are among many that explore these topics further, offering information for people with Down syndrome, families, service providers, and health professionals as they navigate aging, assessment, care, and planning.

 

Numerous organizations also have produced briefs on this association and guides for caregivers and others interested in knowing more.  A brief list of the national organizations and links to their sites is provided under the Quick Links box.​

Recursos sobre el síndrome de Down y la demencia

El NTG ha estado involucrado en varias publicaciones relacionadas con el síndrome de Down y el apoyo a la demencia. Navegue a través de la biblioteca de publicaciones de apoyo familiar a continuación.

Alzheimer’s Disease in Adults with Down Syndrome
Alzheimer’s Disease in Adults with Down Syndrome

Web-based article

Use of a screening tool for dementia in a Down syndrome specialty clinic
Use of a screening tool for dementia in a Down syndrome specialty clinic

Journal article

Down Syndrome and Dementia: A Guide for Families
Down Syndrome and Dementia: A Guide for Families

Caregiver resource guide

Dohsa‐hou for unexplained regression in Down syndrome in a 19‐year‐old man: A case report
Dohsa‐hou for unexplained regression in Down syndrome in a 19‐year‐old man: A case report

Journal article

Down syndrome regression disorder, a case series: Clinical characterization and therapeutic approaches
Down syndrome regression disorder, a case series: Clinical characterization and therapeutic approaches

Journal article

Assessment and diagnosis of Down syndrome regression disorder: International expert consensus
Assessment and diagnosis of Down syndrome regression disorder: International expert consensus

Journal article

Alternative diagnoses in the work up of Down syndrome regression disorder
Alternative diagnoses in the work up of Down syndrome regression disorder

Journal article

Adapting prescribing criteria for amyloid-targeted antibodies for adults with Down syndrome.
Adapting prescribing criteria for amyloid-targeted antibodies for adults with Down syndrome.

Journal article

The Link between Alzheimer’s Disease and Down Syndrome. A Historical Perspective
The Link between Alzheimer’s Disease and Down Syndrome. A Historical Perspective

Journal article

Acute regression in Down syndrome
Acute regression in Down syndrome

Journal article

Down syndrome in a new era for Alzheimer Disease
Down syndrome in a new era for Alzheimer Disease

Journal article

End-of-life and Down syndrome: A companion guidebook to aging and down syndrome: A health and well-being guidebook
End-of-life and Down syndrome: A companion guidebook to aging and down syndrome: A health and well-being guidebook

Resource guide

Regression in Persons with Down Syndrome: Current Consensus Update for Families
Regression in Persons with Down Syndrome: Current Consensus Update for Families

Resource document

Mental Wellness in Adults with Down Syndrome: A Guide to Emotional and Behavioral Strengths and Challenges (2nd Ed.)
Mental Wellness in Adults with Down Syndrome: A Guide to Emotional and Behavioral Strengths and Challenges (2nd Ed.)

Book

Regression (Down Syndrome)
Regression (Down Syndrome)

Book chapter

Markers of early changes in cognition across cohorts of adults with Down syndrome at risk of Alzheimer’s disease
Markers of early changes in cognition across cohorts of adults with Down syndrome at risk of Alzheimer’s disease

Journal article

Dementia in Mentally Disabled Hard to Identify
Dementia in Mentally Disabled Hard to Identify

Resource document

The National Task Group on Intellectual Disabilities and Dementia Practices consensus recommendations for the evaluation and management of dementia in adults with intellectual disabilities
The National Task Group on Intellectual Disabilities and Dementia Practices consensus recommendations for the evaluation and management of dementia in adults with intellectual disabilities

Resource document

Importance in Overall Health in Adults with Intellectual Disability and Dementia
Importance in Overall Health in Adults with Intellectual Disability and Dementia

Educational Presentation

Bibliography on Dementia Care Management and Intellectual Disability
Bibliography on Dementia Care Management and Intellectual Disability

Working bibliography

CMS decision on Aduhelm: An Explainer by LuMind IDSC
CMS decision on Aduhelm: An Explainer by LuMind IDSC

Resource document

COVID-19 and Down Syndrome Resources Guide
COVID-19 and Down Syndrome Resources Guide

Resource document

NTG's FAQ on aducanumab and Down syndrome
NTG's FAQ on aducanumab and Down syndrome

Resource document

Aducanumab: Panacea or Risk for Adults with Down Syndrome
Aducanumab: Panacea or Risk for Adults with Down Syndrome

Conference presentation

Aducanumab and Persons with Down Syndrome: What Do We Do Now? (Statement)
Aducanumab and Persons with Down Syndrome: What Do We Do Now? (Statement)

Resource document

ISTAART Down Syndrome PIA Report on Research in 2020
ISTAART Down Syndrome PIA Report on Research in 2020

Reference

Evaluation of the National Task Group-Early Detection Screen for Dementia: Sensitivity to 'mild cognitive impairment' in adults with Down syndrome
Evaluation of the National Task Group-Early Detection Screen for Dementia: Sensitivity to 'mild cognitive impairment' in adults with Down syndrome

Journal article

Clinical and biomarker changes of Alzheimer’s disease in adults with Down syndrome: a cross-sectional study
Clinical and biomarker changes of Alzheimer’s disease in adults with Down syndrome: a cross-sectional study

Journal article

Further understanding the connection between Alzheimer’s disease and Down syndrome
Further understanding the connection between Alzheimer’s disease and Down syndrome

Journal article

Down syndrome disintegrative disorder: A clinical regression syndrome of increasing importance
Down syndrome disintegrative disorder: A clinical regression syndrome of increasing importance

Journal article

Regression and loss of skills in adolescents and adults with Down syndrome
Regression and loss of skills in adolescents and adults with Down syndrome

Resource video

New definition of unexplained regression in Down syndrome proposed
New definition of unexplained regression in Down syndrome proposed

Journal article

Unexplained regression in Down syndrome: 35 cases from an international Down syndrome database
Unexplained regression in Down syndrome: 35 cases from an international Down syndrome database

Journal article

Catatonia in Down syndrome: Systematic approach to diagnosis, treatment and outcome assessment based on a case series of seven patients
Catatonia in Down syndrome: Systematic approach to diagnosis, treatment and outcome assessment based on a case series of seven patients

Journal article

Regression in adolescents and adults with Down syndrome
Regression in adolescents and adults with Down syndrome


Book chapter

Booklet on Alzheimer's Disease and Down Syndrome
Booklet on Alzheimer's Disease and Down Syndrome

Caregiver resource guide

Aging and Down Syndrome: A Health & Wellbeing Guidebook
Aging and Down Syndrome: A Health & Wellbeing Guidebook

Caregiver resource guide

Acute regression in young people with Down syndrome
Acute regression in young people with Down syndrome

Journal article

Rapid clinical deterioration in an individual with Down syndrome
Rapid clinical deterioration in an individual with Down syndrome

Journal article

Dementia in People with Intellectual Disability: Guidelines for Australian GPs
Dementia in People with Intellectual Disability: Guidelines for Australian GPs

Resource document

Noticias sobre el síndrome de Down y la demencia

Aún no hay ninguna entrada publicada en este idioma
Una vez que se publiquen entradas, las verás aquí.

For more information on what has become to be referred to as 'Down syndrome regression' see our page on this topic.

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