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What are the Stages of Alzheimer's
Disease?
Learn the facts. Know what to expect.
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Dear Friend,
Often referred to as the "long goodbye,"
Alzheimer's disease typically progresses in several stages:
mild, moderate and severe. Each stage has its own unique set of
challenges, and each person living with Alzheimer's will
experience symptoms - or progress through the stages -
differently.
Here is what people may experience in each stage of the disease:
Mild cognitive impairment (MCI)
due to Alzheimer's:
An early stage of the disease is MCI due to Alzheimer's.
During this stage, a person may notice changes in their memory,
thinking and reasoning. They will still be able to perform most of
their daily responsibilities and activities.
Common symptoms of MCI due to
Alzheimer's include:
* Forgetting important information such as appointments,
conversations or recent events.
* Difficulty with making sound decisions, judging the time or
recalling a sequence of steps needed to complete a complex task.
Mild dementia due to
Alzheimer's:
Those with MCI due to Alzheimer's typically progress to
the next stage of the disease, often referred to as early-stage
Alzheimer's. A person living with mild dementia will start to
experience symptoms that interfere with some daily activities. While
they will still be able to perform many daily routines, these tasks
may become more difficult over time. Friends, family or coworkers may
notice changes.
Common difficulties in the early stage
may include:
* Problems coming up with the right word or name for something.
* Trouble remembering people's names after being introduced.
* Difficulty with familiar tasks.
* Forgetting something that was just read.
* Getting lost in familiar places.
* Increased trouble with planning or organizing.
Moderate dementia due to
Alzheimer's:
In the middle stage, symptoms are more noticeable and will
interfere with many daily activities. This is typically the longest
stage of the disease and can last for many years. A person living with
moderate dementia may still recall significant details about themself
and family, but gaps in memory and thinking are noticeable and
assistance with daily tasks is required.
Challenges can include:
* Forgetting events or their own personal history.
* Feeling frustrated, angry or withdrawn, especially in socially
or mentally challenging situations.
* Confusion about where they are or the day of the week.
* Trouble controlling bladder and bowels.
* Needing help to choose the right clothes for the weather or
occasion.
* Changes in sleep patterns. This may include sleeping during the
day and restlessness at night.
* A higher risk of wandering and becoming lost.
* Personality and behavioral changes, such as becoming suspicious
or delusional, believing that others are lying or repeating a
behavior over and over.
Severe dementia due to
Alzheimer's:
In the late stage, symptoms are severe and will interfere with
most daily activities. People living with severe dementia lose the
ability to carry on a conversation, respond to the environment and,
eventually, control movement. Assistance or supervision is required to
complete most daily personal care. People may be at higher risk of
infections, especially pneumonia. Changes in physical abilities will
also worsen, affecting the person's ability to walk, sit and,
eventually, swallow.
Thanks to our supporters, we can be there to help the over 7
million Americans living with Alzheimer's and their nearly 12 million
caregivers understand what to expect at each stage and provide
resources to guide them through obstacles and plan for the future.
If you or your family needs support,
we are here for you around the clock, 365 days a year. For more care
and support tools and resources, visit alz.org/Help-Support or call
our
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free 24/7 Helpline (800.272.3900). Helpline callers will be connected
to a master's-level care consultant and receive decision-making
support, crisis assistance and information regarding treatment, care
and financial decisions.
Kind-hearted people like you also help
us accelerate promising research that offers more insight into the
progression of Alzheimer's, as well as develop new treatments in the
search for a cure. To learn more about the progress our community has
made possible, visit alz.org.
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Wishing you the best today and every day.
Sincerely,
Maria C. Carrillo, Ph.D.
Chief Science Officer and Medical
Affairs Lead
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P.S. Will you help us continue our momentum in the fight by
making your first gift today? Your support means the world to us and
those we help. With you by our side, we'll continue to work toward a
cure we know is out there so that, one day, no one has to hear the
words "You have Alzheimer's."
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Thank you in advance for fueling our mission to lead the way to end
Alzheimer's and all other dementia - by accelerating global
research, driving risk reduction and early detection, and maximizing
quality care and support.
Your donation will strengthen our efforts
to advance Alzheimer's care, support and research. From face-to-face
support to online education programs and promising global research
initiatives, your gift makes a difference in the lives of all those
affected by Alzheimer's and other dementias in your community and
across the world. Thank you for your continued support.
Alzheimer's Association Home Office, 225
N. Michigan Ave., Fl. 17, Chicago, IL 60601
© 2025 Alzheimer's
Association. All rights reserved.
800.272.3900 | alz.org
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