What Is Sundowning in Dementia?

Sundowning is a pattern in which a person with dementia becomes more confused, restless, anxious, irritable or agitated later in the day, often as daylight fades. Some people pace, repeatedly ask to go home, follow a caregiver from room to room, become suspicious, resist care or have difficulty settling for the night.

For related context, read What Is Dementia Care at Home? and How to Manage Wandering in Dementia at Home.

For related context, read What Is Dementia Care at Home? and How to Manage Wandering in Dementia at Home.

Sundowning is not a separate disease. It is a description of a late-day or evening pattern that can occur in dementia. The National Institute on Aging describes sundowning as restlessness, agitation, irritability and confusion that begins or worsens as daylight fades.

Dementia sundowning care usually focuses first on identifying triggers, making the evening more predictable, reducing overstimulation, supporting daytime activity, improving lighting and sleep habits, and checking for pain or other unmet needs. A sudden major change should still be assessed medically because not every episode of evening confusion is caused by dementia.

What Does Sundowning Look Like?

Sundowning does not look exactly the same in every person. One person may become restless and pace. Another may repeatedly ask to leave, insist they need to go to work, become tearful, call out for family members or refuse the evening routine.

The Alzheimer's Association describes common features such as confusion, anxiety, agitation, pacing and disorientation during the late afternoon or evening. Some people also have more difficulty sleeping at night.

Families often notice that the same behaviour appears at a similar time each day. That repeated timing is one clue that the pattern may be related to sundowning rather than a completely new problem.

Why Does Sundowning Happen?

There is not one single cause. Late-day confusion may be influenced by fatigue, changes in the body's sleep-wake rhythm, lower light levels, overstimulation, boredom, pain, hunger, thirst, toileting needs or a long inactive day.

The National Institute on Aging notes that being overly tired can increase late-afternoon and evening restlessness. The Alzheimer's Association also advises caregivers to consider physical discomfort and environmental triggers when agitation increases.

This is why good dementia agitation care starts with looking for a reason rather than assuming the person is simply becoming difficult.

Is Sundowning the Same as Delirium?

No. Sundowning is usually a recurring pattern linked to the later part of the day in someone with dementia. Delirium is an acute change in attention, awareness or thinking that can develop because of infection, dehydration, medication effects, pain or another medical problem.

A familiar evening pattern may still need care adjustments, but sudden confusion that is much worse than usual should be medically assessed.

What Is Dementia Care at Home? explains why new or rapidly worsening confusion should not automatically be accepted as normal dementia progression.

Keep a Record of the Evening Pattern

A simple diary can help families identify when sundowning starts and what may be triggering it.

Record the time agitation begins, what the person was doing beforehand, whether they ate and drank normally, whether they had a nap, whether they were constipated or in pain, and whether the environment was noisy or crowded.

After several days, patterns may become clearer. This gives caregivers something practical to change rather than trying several strategies at once.

Use a Predictable Daily Routine

A regular routine can make the day easier to understand. Try to keep waking, meals, medicines, activity and bedtime reasonably consistent.

The National Institute on Aging recommends sticking to a schedule as one way to reduce late-day confusion. Predictability can reduce the number of decisions and surprises a person with dementia has to process.

How to Care for a Person with Dementia at Home explains how routine can support communication, personal care, medicines and behaviour throughout the day. For more on the practical service arrangements, review home nursing before deciding what information the care team needs.

Encourage Daytime Activity

Appropriate daytime activity may help reduce restlessness and support sleep later in the day.

The National Institute on Aging recommends daily physical activity while avoiding an overloaded schedule. A short walk, simple household activity, music, gardening or physiotherapist-prescribed exercise may be appropriate depending on the person's abilities.

The activity should be familiar and manageable. Exhausting the person can make late-day agitation worse rather than better.

Use Daylight to Support the Sleep-Wake Cycle

Daylight helps the body distinguish daytime from night-time. The National Institute on Aging recommends time outside or near a window for natural light during the day.

If the person spends most of the day in a dim room and becomes more active in the evening, increasing daytime light exposure may help make the daily rhythm clearer.

Families should still consider heat, mobility and fall risk when planning outdoor time.

Limit Long or Late Daytime Naps

Long naps late in the day can make night-time sleep more difficult for some people.

Both the National Institute on Aging and Alzheimer's Association recommend limiting long naps and dozing late in the day when sleep problems are present.

A short rest may still be necessary for someone who is frail or unwell. The aim is to avoid a pattern where much of the afternoon is spent sleeping and the person becomes fully awake and restless at night.

Reduce Evening Noise and Stimulation

The evening environment can become overwhelming when several people are talking, the television is loud, lights are changing and household activity is busy.

The Alzheimer's Association recommends reducing stimulation during evening hours. A calmer room, fewer competing conversations and familiar activities may make it easier for the person to settle.

Some people respond well to quiet music, family photographs, a familiar television programme or another soothing routine.

Keep the Home Well Lit as Daylight Fades

As natural light decreases, shadows and dark areas can become confusing. A familiar room may suddenly look different.

The Alzheimer's Association recommends keeping the home well lit in the evening to reduce confusion. Lights can be turned on before the room becomes dim rather than waiting until the person is already distressed.

Dementia Home Safety Checklist for Families explains how lighting, night-time routes and visual cues fit into a wider home-safety plan.

Check for Pain, Hunger, Thirst and Toileting Needs

A person with dementia may not be able to explain discomfort clearly. Restlessness or agitation can sometimes be the first sign that something is wrong.

The Alzheimer's Association advises caregivers to check for pain, hunger, thirst, constipation, a full bladder, fatigue, infection and skin irritation when agitation occurs.

Before assuming the behaviour is purely psychological, ask whether a basic physical need is being missed.

Plan the Evening Meal Carefully

A heavy meal close to bedtime may make some people uncomfortable, while too little food can also contribute to restlessness.

The Alzheimer's Association suggests considering a larger meal earlier in the day and a lighter evening meal when sleep problems are present.

Families should still follow any dietary restrictions and make sure the person has enough food and fluid overall.

Review Caffeine, Alcohol and Other Stimulants

Caffeine late in the day can interfere with sleep. Alcohol can also disrupt sleep and may interact with medicines.

The National Institute on Aging recommends avoiding caffeine and alcoholic drinks later in the day when sundowning or sleep problems are present.

If the person uses nicotine or other stimulating substances, their timing may also need review with the treating clinician.

Create a Calm Bedtime Routine

A predictable bedtime routine can signal that the day is ending.

This may include washing, changing into night clothes, dimming unnecessary activity, listening to quiet music or reading something familiar. The National Institute on Aging recommends a consistent bedtime and a peaceful evening routine.

The routine should be simple enough that the person can recognise it over time.

Do Not Argue When the Person Says They Need to Leave

During sundowning, a person may say they need to go home even while already at home, or insist they must go to work or collect children.

Arguing about the facts may increase distress. A calmer response is to acknowledge the concern, offer reassurance and gently redirect attention.

If exit-seeking becomes a safety issue, How to Manage Wandering in Dementia at Home explains how routine, supervision, door alerts, identification and a response plan can reduce risk.

Allow Safe Pacing When Possible

Pacing can be a way of releasing restlessness. If the person is safe and supervised, it may not need to be stopped immediately.

The Alzheimer's Association advises against physical restraint and notes that supervised pacing may be allowed when the person is awake and upset. If the family is considering support at home, the Diagnex guide to dementia care at home explains the service pathway and its limits.

The important issue is whether the person can move safely without reaching stairs, exterior doors, traffic or other hazards.

Watch for Wandering Risk at Sundown

The Alzheimer's Association notes that some people are more likely to wander during the period when sundowning begins.

Families should identify whether late afternoon or evening is a high-risk time and increase supervision before the person becomes restless.

A person with a history of leaving home unnoticed may need door alerts, identification and a clear wandering-response plan in addition to behaviour strategies.

Make Night-Time Routes Safer

If the person gets up at night, keep the route between the bedroom and bathroom well lit and clear of trip hazards.

Nightlights, a clear pathway and easy access to the toilet can reduce disorientation. Families should also consider whether frequent night waking is related to urinary symptoms, pain, medication timing or sleep problems.

Fall Prevention at Home for Elderly Parents explains how lighting, mobility, footwear and other fall risks can be reviewed together.

Use Familiar Caregivers When Possible

An unfamiliar caregiver arriving in the evening can increase confusion for some people.

Consistent caregivers are more likely to know the person's usual evening routine, early signs of agitation and the strategies that have worked before.

How to Choose a Dementia Caregiver at Home explains why dementia-specific experience, communication style and caregiver consistency matter when selecting support.

When Should a Caregiver Step Back?

If the person becomes highly agitated, too many instructions or too much physical closeness can make the situation worse.

The Alzheimer's Association advises caregivers not to raise their voice, crowd, restrain, criticize or argue with the person. A quieter environment, some space and a calm approach may help.

Safety comes first. If there is immediate danger to the person or caregiver, urgent assistance may be necessary.

Should Medicines Be Used for Sundowning?

Non-drug strategies are generally considered first for sleep and sundowning problems. The Alzheimer's Association notes that doctors may consider medication in some cases when non-drug approaches are not enough, but the risks and benefits need to be reviewed carefully.

Families should not use extra sedatives, sleeping tablets or other medicines on their own to control evening agitation.

Home Nursing may be relevant when dementia care includes prescribed medicine administration or other defined clinical tasks, but treatment decisions remain with the treating doctor.

Review Medicine Timing With the Treating Team

Some medicines can affect sleep, alertness or restlessness. The Alzheimer's Association recommends discussing the timing of medicines with the person's doctor when evening sleep problems are difficult.

Do not change medication timing independently unless the treating clinician has advised it.

A medicine review can also help identify drugs that may be contributing to dizziness, drowsiness or confusion.

When Does Sundowning Need Medical Review?

A familiar late-day pattern can often be managed with routine and environmental changes, but new or worsening symptoms should be reviewed.

Seek prompt clinical assessment if the person develops: • sudden or much worse confusion than usual; • fever or signs of infection; • new weakness, facial droop or speech difficulty; • severe pain or a recent fall; • repeated vomiting or inability to drink; • marked drowsiness or reduced responsiveness; • new hallucinations or agitation that are unusually severe or dangerous.

The Alzheimer's Association recommends medical evaluation when behavioural symptoms appear suddenly because physical illness or medication effects may be contributing.

What if the Person Becomes Aggressive?

Aggression can occur during severe agitation, but caregivers should not try to overpower the person unless immediate safety requires emergency intervention.

Give the person space, reduce noise, avoid arguing and move other people away if needed. If there is a weapon, serious threat or immediate risk of harm, emergency assistance may be necessary.

Repeated aggression should be discussed with the treating clinician so that pain, illness, medicines and other causes can be reviewed.

How Sundowning Affects Caregivers

Evening agitation can be exhausting because it often happens at the end of a long caregiving day and may continue into the night.

If one family member is repeatedly losing sleep, the care plan may not be sustainable. Night-time caregiver support, respite, shared family coverage or a professional caregiver may need to be considered.

Patient Care at Home may be relevant when the person needs regular supervision and non-clinical assistance during high-risk periods.

When Is Night-Time Supervision Needed?

Night-time supervision may become necessary when the person wanders, repeatedly gets out of bed, cannot find the bathroom, falls, tries to leave the house or cannot safely settle without assistance. For care planning beyond this article, compare medical caretaker support with the instructions already given by the treating professional.

Not every person with sundowning needs overnight care. The decision should reflect the actual risk, frequency of episodes and whether the person can be safely left alone.

A caregiver schedule may need to change if the most difficult period is evening or night rather than daytime.

How Sundowning Fits Into the Larger Dementia-Care Plan

Sundowning is rarely managed well by one isolated intervention. Sleep, daytime activity, light exposure, medicines, pain, toileting, communication, wandering risk and caregiver fatigue can all influence the evening.

The broader Memory & Dementia Care pathway can help families think about these needs together rather than treating sundowning only as a behaviour problem.

The care plan should be reviewed whenever the pattern changes significantly or begins creating new safety risks.

A Practical Evening Checklist for Families

Before the usual sundowning period begins, families can check: • Has the person had enough daytime activity without becoming overtired? • Were long late-afternoon naps avoided when possible? • Is the home well lit before daylight fades? • Has the person eaten and had enough fluids? • Do they need the toilet or have signs of constipation? • Is there pain or another physical discomfort? • Is the evening environment calm rather than noisy or crowded? • Are familiar activities ready for the high-risk period? • Is wandering supervision in place if needed? • Are medicines being given exactly as prescribed? • Is the night-time walking route clear and well lit? • Does the caregiver know when to call the family, doctor or emergency services?

How to Arrange Dementia Support With Diagnex

To arrange support for dementia sundowning care, share the person's diagnosis if known, usual evening behaviour, wandering or fall risk, sleep pattern, mobility, medicine needs, level of supervision required and locality.

Diagnex can review whether the requirement fits Memory & Dementia Care, Patient Care at Home, Home Nursing or another elder-care pathway based on the person's actual needs.

For service coordination, use the Diagnex Contact page.

Frequently asked questions

What is sundowning in dementia?

Sundowning is a pattern in which restlessness, confusion, anxiety, irritability or agitation begins or becomes worse in the late afternoon or evening.

What triggers sundowning?

Possible triggers include fatigue, lower light levels, disrupted sleep, overstimulation, boredom, pain, hunger, thirst, constipation, toileting needs and changes in routine.

How can families calm sundowning?

A predictable routine, daytime activity, natural light exposure, reduced evening stimulation, good lighting, attention to physical needs and calm reassurance may help.

Should a person with sundowning be allowed to pace?

Supervised pacing can sometimes be safer and less distressing than trying to stop all movement, provided the walking area is secure and fall and wandering risks are controlled.

Can sundowning cause wandering?

Yes. Some people become more restless and more likely to try to leave during the late afternoon or evening, so supervision and wandering precautions may need to increase during that period.

Are medicines used for sundowning?

Doctors may consider medication in selected cases when non-drug approaches are not enough, but families should not start or increase sedating medicines without medical advice.

When is evening confusion a medical concern?

Sudden or unusually severe confusion, fever, new weakness, marked drowsiness, severe pain, repeated vomiting, a significant fall or other acute symptoms should be medically assessed.

References and further reading

This article provides general education and does not replace an individual dementia or medical assessment. Guidance was cross-checked against current National Institute on Aging recommendations on sleep problems, agitation and sundowning in Alzheimer's disease and Alzheimer's Association guidance on sleep issues, sundowning and agitation.