Updated: July 2026

If your mom, dad, spouse, or loved one with dementia seems to be sleeping all the time, it can feel worrying.

Maybe they sleep late into the morning.
Maybe they nap several times a day.
Maybe they seem tired even after a full night of sleep.
Maybe they are awake at night and exhausted during the day.

Many caregivers wonder:

“Is this normal?”
“Is sleeping all day part of dementia?”
“Should I wake them up?”
“Is this a sign that dementia is getting worse?”
“When should I call the doctor?”

The answer depends on the person, the stage of dementia, their overall health, and whether the sleepiness is new or sudden.

Sleep changes are common in dementia, but a major change in alertness or sleeping patterns should always be taken seriously.

Educational note: This article is for general caregiver education and support only. It is not medical advice and should not replace guidance from a physician, nurse, or qualified healthcare provider. If a sudden increase in sleepiness develops or is accompanied by fever, new confusion, weakness, falls, poor eating or drinking, pain, or other concerning symptoms, seek medical evaluation promptly.

Quick answer

Many caregivers become concerned when someone with dementia begins sleeping much more than they used to.

In some cases, increased sleeping can happen as dementia progresses. Sleep-wake patterns may become disrupted, the person may become less active during the day, or everyday tasks may feel more tiring than they once did.

However, excessive sleepiness can also be caused by medications, infection, dehydration, depression, poor sleep at night, pain, or other medical concerns.

If the change is sudden, dramatic, or very different from the person’s usual routine, contact the person’s healthcare provider.

Is sleeping more common in dementia?

Yes. Many people living with dementia experience changes in sleep.

A person with dementia may:

• Sleep later in the morning
• Nap more during the day
• Become sleepy after meals
• Wake frequently during the night
• Stay awake at night
• Feel tired even after many hours of sleep
• Have periods of alertness followed by drowsiness

These changes may become more noticeable as dementia progresses, but every person is different.

Why does dementia affect sleep?

There is usually not one single reason. Several factors may contribute.

Changes in the brain

Dementia can affect the brain systems involved in sleep, wakefulness, alertness, and daily rhythm.

This may make it harder for the person to stay awake during the day or sleep well at night.

Mental fatigue

Simple daily tasks may require much more effort than they once did.

Getting dressed, eating a meal, following a conversation, moving through a routine, or processing a busy environment can be tiring for someone with dementia.

Even if the activity seems simple from the outside, the brain may be working very hard.

Poor sleep at night

Sometimes a person appears to be “sleeping all day” because they are not sleeping well at night.

They may wake frequently, wander, feel confused, or have trouble settling back down.

This can lead to more daytime napping and fatigue.

Reduced physical activity

People who move less during the day may become sleepier.

Less movement, less daylight, and fewer engaging routines can all affect the sleep-wake cycle.

Medications

Some medications may cause drowsiness or make daytime sleepiness worse.

If your loved one suddenly becomes much sleepier after a medication change, dosage change, or new prescription, contact the prescribing healthcare provider.

Do not stop medications without medical guidance.

Depression or emotional distress

Depression, grief, anxiety, loneliness, and boredom can all affect energy levels.

A person with dementia may not always be able to explain how they feel, so increased sleeping may be one sign that something has changed emotionally.

Dehydration, infection, pain, or illness

A sudden increase in sleeping can sometimes be connected to a medical issue.

Possible causes may include:

• Urinary tract infection
• Dehydration
• Pain
• Fever
• Constipation
• Poor nutrition
• Thyroid concerns
• Medication side effects
• Sudden illness
• Delirium or acute confusion

This is why sudden or dramatic changes should be discussed with a healthcare professional.

When should caregivers be concerned?

Contact a healthcare provider if the increase in sleeping is:

• Sudden
• Dramatic
• Very different from the person’s normal routine
• Accompanied by fever
• Accompanied by new or much worse confusion
• Accompanied by falls
• Accompanied by new weakness
• Accompanied by poor eating or drinking
• Accompanied by pain or signs of distress
• Connected to a recent medication change
• Causing the person to miss meals, fluids, medication, or necessary care

You know your loved one’s usual patterns best. If something feels different or concerning, it is appropriate to ask for medical guidance.

Should you wake someone with dementia?

It depends.

If someone is sleeping comfortably, has no concerning symptoms, and this is part of their usual routine, allowing rest may be appropriate.

However, if excessive daytime sleeping is disrupting nighttime sleep, interfering with meals or hydration, or represents a significant change from their normal routine, contact the person’s healthcare provider.

You may also want to gently support a daytime routine with light, meals, movement, and meaningful engagement when the person is awake.

Gentle ways to encourage wakefulness

When your loved one is awake, focus on meaningful engagement rather than trying to keep them busy for long periods.

Short, comforting activities may work better than long programs.

Ideas include:

• Sitting outside together
• Listening to favorite music
• Looking through family photographs
• Exploring familiar objects
• Reading greeting cards
• Folding towels
• Sorting recipe cards
• Holding a favorite blanket
• Smelling familiar spices
• Sharing a favorite snack
• Watering plants
• Watching birds from a window
• Looking through a memory box

The goal is not to fill every waking moment.

The goal is to create small moments of comfort, connection, and purpose.

A helpful caregiver shift

Instead of measuring the day by how long someone stays awake, try measuring it by the quality of the moments they experience while awake.

Sometimes ten meaningful minutes are more valuable than several hours of passive wakefulness.

A short conversation, a shared song, a familiar object, or a quiet moment together can still matter.

People also ask

Is sleeping all day part of dementia?
Sleeping more can happen with dementia, especially as the condition progresses. However, sleeping all day can also be related to medication, infection, dehydration, depression, poor nighttime sleep, or another medical concern. A sudden or dramatic change should be discussed with a healthcare provider.

Why is my mom with dementia always tired?
Your mom with dementia may feel tired because daily tasks require more mental effort, her sleep-wake cycle has changed, she is less active during the day, she is not sleeping well at night, or she may have another medical or emotional issue contributing to fatigue.

Does Alzheimer’s cause excessive sleeping?
Alzheimer’s disease can affect sleep patterns. Some people sleep more during the day, wake often at night, or have disrupted sleep. Excessive sleepiness should still be monitored, especially if it is new or severe.

What stage of dementia causes sleeping all the time?
Increased sleeping may be more common in later stages of dementia, but it is not only a late-stage symptom. It can also happen because of illness, medication side effects, depression, dehydration, poor sleep at night, or reduced activity.

Should I wake someone with dementia during the day?
It depends on the situation. If the person is sleeping comfortably and there are no concerns, rest may be appropriate. If daytime sleeping is new, excessive, interfering with meals or fluids, or disrupting nighttime sleep, talk with the healthcare provider.

Is increased sleeping a sign that dementia is getting worse?
It can be, but not always. Increased sleeping may happen as dementia progresses, but it can also be caused by treatable issues such as infection, dehydration, depression, pain, poor sleep, or medication effects.

Key takeaways

• Sleep changes are common in dementia.
• Increased daytime sleeping can happen for many reasons.
• Sudden or dramatic sleep changes should be discussed with a healthcare provider.
• Poor nighttime sleep can lead to more daytime napping.
• Medications, infection, dehydration, pain, and depression can contribute to sleepiness.
• Focus on meaningful engagement during waking hours rather than constant activity.
• Even brief moments of connection can make a meaningful difference.

Looking for hands-on dementia activities?

When your loved one is awake, familiar routines and comforting activities can help make those moments more meaningful.

The Sensory Lady Collection includes ready-to-use resources built around familiar objects, conversation starters, sensory engagement, bedside activities, and person-centered experiences designed for a wide range of energy levels and abilities.

Whether you are caring for someone at home or supporting residents in memory care, these practical resources can help caregivers make the most of the time they have together.

Explore The Sensory Lady Collection here

Continue reading

Continue exploring dementia caregiver support and memory care activity ideas:

• What to Do When Someone With Dementia Says, “I Want to Go Home”
• How to Talk to Someone With Dementia
• How to Keep Someone With Dementia Occupied
• Best Activities for Dementia Patients at Home
• Why Familiar Objects Help Someone With Dementia
• Why People With Dementia Refuse Activities