Memory loss and confusion

Memory loss is the symptom most people link with dementia. A person may forget a talk from this morning, put the keys in the fridge, or ask what day it is again and again. Later, they may lose track of where they are or who is in the room.

This page explains what is happening in the brain and why it is not on purpose. It also covers how to help with gentle cues, simple memory aids and a steady routine. Small changes at home can make each day calmer for both of you.

What is happening in the brain

In Alzheimer's disease, the damage usually starts in two areas deep in the brain: the hippocampus and the entorhinal cortex. These areas are key to forming new memories.¹ That is why memory problems are often one of the first signs.¹ As more brain cells die, the damage spreads, and other parts of the brain shrink.¹

This may explain a pattern many families notice. The person may forget what you said five minutes ago but still tell a clear story from 50 years ago. New facts are not stored well, so they are hard to pull back up later. Older memories were stored long before the damage began.

Not every type of dementia starts with memory loss. In Lewy body dementia, early problems are often with attention, alertness and organized thinking. In frontotemporal dementia, changes in behavior and language usually come first. In vascular dementia, forgetting events and misplacing things are common.² See types of dementia for more.

Current medicines cannot stop the damage, but some may ease symptoms for a while.³ See dementia medicines.

How memory loss changes over time

Memory loss looks different at each stage. In the early stage, it may be mild. The person often knows something is wrong. They may get upset when they cannot recall recent events, make decisions or follow what others say.³

In later stages, memory loss is much deeper. The person may not know family members, or may call them by other names. They may be confused about where home is or what year it is. They may forget what a fork or a pen is for.³

Confusion about time and place is common too. A person may lose track of dates and seasons. They may not know where they are or how they got there.⁵ Some people also do not realize their memory has changed. This is caused by the illness, not denial. See when the person doesn't know they are ill.

You can read more in stages of dementia.

Normal aging or something more?

Everyone forgets things sometimes, and forgetting gets a bit more common with age. But dementia is not a normal part of aging.⁴

Other things can also cause memory problems. These include depression, anxiety, sleep problems, medicine side effects, alcohol, low vitamin B12, thyroid, kidney or liver problems, and major stress such as the death of a spouse.⁴ Many of these can be treated. See treatable conditions that look like dementia and medicines that can worsen memory.

Sudden confusion: think delirium first

In dementia, memory usually gets worse slowly, over months and years. A change that happens over hours or a few days is different.

Delirium is a state of sudden confusion. It often comes and goes during the day, and it is often worse at night. The person may be very sleepy and withdrawn, or restless and agitated.⁶ Common causes include infections (such as a urinary tract infection or pneumonia), medicine side effects, and not drinking enough fluids.⁶ Surgery and anesthesia can also trigger it. Delirium and dementia can happen at the same time.⁶

The good news is that delirium is often treatable once the cause is found.⁶ The Alzheimer's Association advises a medical check for any sudden change in behavior.³ For ways to lower the risk in the hospital, see hospital stays and emergency rooms.

How to respond when the person forgets

How you react can make a big difference. A calm reply can keep a hard moment small. Try these ideas:

If the person asks the same thing over and over, see repeated questions and stories. For more on talking together, see talking with someone who has dementia.

Cueing: giving just enough help

Cueing means giving a hint or prompt so the person can do a task themselves. The goal is to help without taking over. Let the person do the parts they still can.⁷

Start with the smallest hint. Give more help only if it is needed:

1. Set things up. Lay out the toothbrush with paste on it, or the clothes in the order they go on. A simple space with few distractions helps.⁷
2. Use a short spoken cue. Give one step at a time, in a few words. "Here is your shirt." Ask one question at a time. Use yes-or-no questions when you can.⁸
3. Show, don't just tell. Act out the step, such as brushing your own teeth beside them.⁸
4. Start the motion together. Guide the hand to begin the task, then let go.
5. Write it down. If spoken words are confusing, a short written note may work better.⁸
6. Take over kindly, if needed. If the person is tired or upset, help with that step and try again later.

Wait long enough for an answer. A person with dementia may need much more time to take in what you said.⁸

Memory aids that help

Memory aids are tools outside the brain that hold information for the person. They only help if they still mean something to the person.⁹

• A clock and calendar in plain view.⁹ Large numbers are easier to read. Crossing off each day can help.
• A whiteboard with today's day, date and plan, and who is coming to visit.
• Written answers to common questions, such as "Your daughter is coming at 3:00." This works if the person can still read.⁹
• Photos with names of family, friends and helpers.^3,9
• Labels or pictures on drawers, cupboards and the bathroom door.
• One spot for important things. Keep keys, wallet, glasses and phone in the same place every day.⁴
• Notes and to-do lists.⁴ One idea from people living with Alzheimer's: put a sticky note saying "Do not take me" on medicine already taken today.¹⁰
• Done signals. Move an item when a task is finished. For example, move the shampoo bottle to the other side of the shower after washing hair.¹⁰

A memory notebook can keep names, phone numbers, the daily plan and medicine list in one place. Phones, smart speakers and pill dispensers with alarms can help too. See technology that helps. Locked pill dispensers and a care partner's check are safer than relying on memory alone. See managing medicines at home.

A steady routine

When memory fails, routine takes its place. A person who does the same things in the same order each day has less to remember and less to figure out.

Keep meals, bathing, toileting and bedtime at about the same time each day.⁷ Planning a day is hard for a person with dementia, so a steady but flexible routine helps.⁷ People living with Alzheimer's say a daily plan with just a few main tasks cuts down on mistakes.¹⁰

Big changes can make memory and confusion worse for a while. These include a move or a change in routine. Infections can also make things worse.³ When a change cannot be avoided, keep the rest of the day as familiar as you can. Late-day confusion is common too. See sundowning.

For a sample day and more ideas, see building a good daily routine.

Do brain activities help?

Some activities have more evidence than others.

Enjoyable activities still matter, even if they do not change test scores. Music, looking at old photos, and simple chores can bring comfort and a sense of purpose. See meaningful activities.

When to get help

Talk with a doctor if you notice memory changes in yourself or someone you love. This includes asking the same questions again and again, getting lost in a familiar place, trouble following directions or recipes, or not keeping up with eating or bathing.⁴ Memory problems that last more than a few weeks also need a check.⁴ People with memory problems should have their memory checked every 6 to 12 months.⁴

See the first doctor visit about memory and memory and thinking tests.

For caregivers. Watching a loved one forget is painful. Grief, frustration and tiredness are normal. The Alzheimer's Association 24/7 Helpline at 800-272-3900 can help with questions any time of day.³ See caregiver stress and burnout. If you feel hopeless or have thoughts of harming yourself, call or text 988 for the Suicide and Crisis Lifeline. If someone is in danger right now, call 911.

Should I correct the person when they get something wrong?

Usually not, unless safety is involved. Correcting often leads to embarrassment or an argument, and the new fact will not be stored anyway. Focus on the feeling behind the words.^7,8 If you must correct, make it sound like a gentle suggestion.³

Is it okay to go along with what they believe?

Often, yes. If the person thinks it is an earlier year, talking about that time can bring comfort.³ Many caregivers choose kind answers over hard facts, especially about a death the person has forgotten. You do not need to say things you are not comfortable saying. Changing the subject or offering a calm activity can also help.

Can memory loss be slowed?

Some medicines may ease symptoms for a while.³ Newer anti-amyloid drugs modestly slow decline in early Alzheimer's. See dementia medicines. Group cognitive stimulation gives a small boost to thinking.¹¹ Depression and sleep problems can also hurt memory, and they can be treated.⁴ Ask the doctor to check for them. See also hearing, vision and brain health.

Education only. This page is general information written from the sources listed. It is not medical, legal or financial advice and does not replace a doctor, therapist or lawyer who knows your situation. How we write and check pages.