Noticing changes in a loved one’s behaviour as evening approaches can be unsettling. What once felt like a calm part of the day may now come with restlessness, confusion, or sudden mood shifts, and many caregivers find themselves wondering if they’re doing something wrong.

Sundown syndrome in the elderly is common in those with Alzheimer’s or other dementias. Potentially, up to 66% of older adults with these diseases suffer from sundowners, usually in the middle stages of dementia.

Sundowner’s syndrome is a pattern that affects some older adults, particularly those living with cognitive changes. For families, it often shows up quietly at first: a little more agitation, difficulty settling down, or trouble recognizing familiar routines later in the day. These moments can be emotionally draining, especially when you’re already doing your best to offer patience and care.

This article is meant to meet you where you are. Rather than offering quick fixes, it focuses on understanding what may be happening and on sharing gentle, practical ways to support your loved one while also caring for yourself. Even small, thoughtful adjustments can help evenings feel more manageable and less overwhelming over time.

Senior man sitting on a couch looking unsettled and distant, which can reflect early signs of sundowner’s syndrome.

What is sundowner’s syndrome in elderly?

Sundowner’s syndrome refers to a pattern of behaviours, rather than a single condition or diagnosis. It describes changes some older adults experience later in the day, often in the late afternoon or evening, when energy is lower, and the brain works harder to process its surroundings. These shifts can feel confusing for families, especially when mornings and early afternoons seem relatively calm.

When Sundowning Typically Occurs

Sundowning most often appears as daylight fades and transitions into evening. This time of day can bring increased fatigue, changes in lighting, and more background noise, all of which can make it harder for someone with cognitive changes to stay oriented. For some people, these behaviours happen daily; for others, they come and go.

The Types of Behaviours Families May Notice

Families may observe a range of behaviours, including restlessness, anxiety, repetitive questions, or difficulty settling down. Some individuals become more withdrawn, while others may appear unusually alert or agitated. These changes are not intentional and are often a response to exhaustion or overstimulation rather than discomfort or distress caused by others.

How Sundowning Connects to Alzheimer’s and Dementia

Sundowner’s syndrome is commonly associated with Alzheimer’s disease and other forms of dementia. As these conditions affect how the brain processes information, transitions at the end of the day can become more challenging. Reduced ability to interpret light, time, and familiar cues may contribute to increased confusion during evening hours.

Robert, one of our customers, once shared that his wife seemed most unsettled just before sunset, even on days that went smoothly. “Once I realized it wasn’t something I was causing,” he said, “I stopped trying to correct her and started focusing on keeping things calm and familiar.” That shift in understanding changed how evenings felt for both of them.

Understanding sundowning as a pattern tied to timing and brain function, rather than behaviour that needs correction, can help families respond with more patience and less pressure.

Caregiver providing gentle guidance and companionship to an older adult with dementia, illustrating the importance of consistent daily routines and familiar social interactions

Related: Daily Routine for Dementia Patients (Caregiver Guide)

Sundowning Terminology Explained

Sundowning, sundowner’s syndrome, sundown syndrome, and late-day confusion describe the same pattern of symptoms becoming more noticeable toward evening; “sundowners syndrome” is another common spelling. These terms describe a pattern rather than a formal standalone diagnosis:1

  • Sundowning
  • Sundowner’s syndrome
  • Sundown syndrome
  • Late-day confusion

Which conditions can involve sundowning?

Sundowning is most often discussed in Alzheimer’s disease, but evening distress can also occur in other dementias. A repeated late-day pattern matters: hallucinations, agitation, or fluctuating alertness at other times should not automatically be labelled sundowning.

How Sundowning May Present Across Different Types of Dementia

Condition

How Sundowning Presents

Typical Stage of Onset

Alzheimer’s Disease

Increased Evening Confusion, Restlessness, or Searching

More Common in Middle and Later Stages; Can Occur Earlier

Vascular Dementia

Evening Confusion or Agitation May Overlap with Existing Cognitive Difficulties

No Established Sundowning-Specific Stage

Lewy Body Dementia

Evening Distress May Overlap with Hallucinations and Fluctuating Alertness

No Established Sundowning-Specific Stage; Fluctuations Can Occur Early

Frontotemporal Dementia

A Repeated Evening Increase in Restlessness or Behavioural Distress Requires Individual Assessment

No Established Sundowning-Specific Stage

When this pattern begins to disrupt daily care, in-home dementia and Alzheimer’s care can help families organize support around the person’s routines and assessed needs.

The stage descriptions are not a diagnostic checklist: early behavioural symptoms in frontotemporal dementia or early hallucinations in Lewy body dementia do not establish early sundowning.2 3

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Related: How to Calm an Agitated Dementia Patient at Home

What causes sundown syndrome in the elderly?

There is no single, confirmed cause of sundowning. Instead, researchers believe it develops from a combination of neurological changes and how the aging brain responds to fatigue, light, and daily transitions, particularly in people living with Alzheimer’s disease or other forms of dementia.

This section focuses on why sundowning exists as a pattern, not what sets it off on a specific day.

Contributing factors researchers have identified include:

  • Disrupted circadian rhythms: Dementia can interfere with the brain’s internal clock, making it harder to regulate alertness, mood, and sleep as the day progresses.
  • Changes in brain chemistry: Cognitive conditions affect neurotransmitters involved in attention, emotional regulation, and sleep–wake cycles.
  • Reduced ability to interpret sensory input: As dementia progresses, the brain may struggle to process light, time, and visual cues, especially in the evening.
  • Cognitive fatigue: Sustaining attention and orientation throughout the day requires more mental effort, leaving fewer resources available by late afternoon or evening.
  • Neurological progression: Sundowning is more common in the middle to later stages of dementia, though it can appear earlier in some individuals.

Because these factors overlap and vary from person to person, sundowning does not follow a predictable path. Understanding it as a neurological pattern, rather than a behavioural issue, can help families respond with empathy rather than frustration.1

What are the early signs of sundowner’s syndrome?

Sundowner’s syndrome does not always appear suddenly or dramatically. For many families, the early signs show up quietly, woven into everyday moments toward the end of the day. These changes can be easy to miss at first, especially when they fluctuate from evening to evening.

An elderly man sits with a pensive and troubled expression, resting his face in his hand to illustrate the complex reality of early dementia and the safety signs to watch for when a senior is living alone.

Related: Is It Safe for a Senior With Early Dementia to Live Alone?

Some common early signs may include:

  • Increased restlessness or pacing later in the afternoon
  • Heightened confusion or difficulty recognizing familiar people or spaces
  • Anxiety, irritability, or sudden mood changes as daylight fades
  • Trouble settling down, even in familiar routines
  • Changes in sleep patterns or resistance to evening care tasks

These behaviours are not deliberate. They are often linked to fatigue, changes in internal body rhythms, and how the brain processes light and stimulation as the day ends. Understanding this can help families respond with more patience and less self-blame.

During one early stage, Linda, a daughter caring for her mother, noticed that conversations became harder after dinner. Her mother would repeat questions and seem unsettled, even though the day had gone smoothly. “At first, I thought I was doing something wrong,” Linda shared. “Once I understood what was happening, I stopped trying to fix it and started focusing on helping her feel safe.”

A caregiver offering reassurance and companionship to an elderly woman, illustrating supportive treatment approaches for sundowner’s syndrome

Sundowning Symptoms

Sundowning does not look the same for everyone. Some changes are subtle, while others are more noticeable, and they may vary from day to day. What’s important is remembering that these behaviours are not intentional. They are often a response to fatigue, sensory changes, or difficulty processing the end-of-day transition.

Below are some patterns families may notice.

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Related: How to Create a Safe Home Environment for Aging Parents

Emotional Changes

As evening approaches, some older adults may seem more on edge or uneasy. This can show up as increased agitation, worry, or irritability, even when nothing specific appears to have changed. Small frustrations may feel bigger, and reassurance that worked earlier in the day may no longer have the same effect.

Cognitive Patterns

Confusion can become more pronounced later in the day. A loved one may have trouble recognizing familiar spaces, lose track of time, or ask the same questions repeatedly.

Physical Behaviours

Some people experience physical restlessness in the evening. This may include pacing, wandering at night, calling out, or difficulty sitting still. Others may appear unusually alert or have trouble settling down for the night. Tiredness can contribute, but pain, needing the toilet, hunger, or other discomfort should also be considered.11

Noticing these patterns is not about labelling behaviour or anticipating what will come next. It’s about understanding how evenings may affect your loved one differently and responding with patience and steadiness when those moments arise.

A senior sitting alone at night, illustrating potential causes of sundown syndrome in older adults.

How Long a Sundowning Episode Lasts

A sundowning episode may be brief or last several hours, usually beginning in the late afternoon or evening. Some episodes settle before bedtime, while others continue into the night; there is no fixed duration that applies to everyone.2

How Long Sundowning Episodes May Last and Recur

Timeframe

What Families May Notice

What the Timing Means

Single Episode

Brief Distress or Symptoms Lasting Several Hours

No Fixed Duration; Record When Symptoms Start and Settle

Daily Pattern

Symptoms Begin in Late Afternoon or Evening and May Continue into the Night

Episodes May Recur without Happening Every Day

Across the Illness

Frequency and Severity Can Change as Dementia Progresses

Sundowning Does Not Follow a Fixed Schedule or Identify a Stage by Itself

The pattern can occur at any stage and may become less prominent later in the illness, even while other care needs increase.4

There isn’t a single answer to how long sundowning lasts. For some people, these changes may appear for a short period and then ease. For others, they may continue over time and vary from evening to evening. Much depends on the individual, their overall health, and the routines and environment surrounding them.

Sundowning Triggers and Intensifiers

Immediate triggers can make symptoms more noticeable in the moment, while cumulative intensifiers reduce a person’s ability to cope by evening. Noticing both helps you adjust the surroundings and the day’s overall pace.

Immediate Triggers and Factors That Can Intensify Sundowning

Immediate Trigger

Cumulative Intensifier

Fading Light, Shadows, or Low Visual Contrast

Poor or Fragmented Sleep

Loud Television, Conversations, or Household Bustle

An Overstimulating Day with Too Many Activities

An Unexpected Visitor or Sudden Schedule Change

Repeatedly Irregular Wake, Meal, or Rest Times

Moving between Activities without Clear Cues

Emotional Stress or Unresolved Confusion Earlier in the Day

Unfamiliar Surroundings or Rearranged Spaces

Missed Meals or Inadequate Fluid Intake

Because these triggers are often subtle, families may not notice them right away. Paying attention to what’s happening just before symptoms begin can help identify patterns and guide gentle adjustments that support calmer evenings.

Where symptoms peak after dark, families often add evening and overnight care so the hardest hours are covered.

Home caregiver offering reassurance and emotional support to an older woman experiencing sundowning symptoms

How can you support a loved one with sundowner’s syndrome?

Supporting someone through sundowning often means focusing on comfort, consistency, and small adjustments rather than trying to change behaviour. These approaches are not meant to be rigid rules. They are gentle ideas families can adapt over time, paying attention to what helps evenings feel calmer and more predictable.

1. Support with Non-Medicinal Approaches

Many families find that simple, non-medicinal strategies can ease evening distress. Offer gentle movement and familiar activities earlier in the day, adapting the pace to your loved one’s energy and abilities. Physical and social activities may improve nighttime sleep modestly, but they do not reliably prevent sundowning. Start with activities the person enjoys and reduce the demands if frustration or fatigue increases.5

Choose manageable activities such as:

  • A supported walk or seated movement earlier in the day.
  • A familiar puzzle, simple craft, or conversation without testing memory.
  • A quiet rest period between activities before tiredness builds.

2. Consider Medical Guidance When Needed

If sundowning symptoms feel overwhelming or change suddenly, it can be helpful to speak with a healthcare professional. A medical review may uncover contributing factors such as pain, sleep issues, or medication side effects. Antidepressants, anti-anxiety medications, and antipsychotics may sometimes be considered for specific assessed symptoms, but none is a general cure for sundowning. Sudden new confusion requires urgent assessment rather than waiting to see whether an evening routine helps.6 7

Prepare for the review with:

  • A list of prescriptions, non-prescription medicines, supplements, and recent changes.
  • Notes on when symptoms begin and whether pain, toileting, meals, or sleep seem connected.

3. Use Familiar Music for Comfort

Soft, familiar music can help set a calmer tone as evening approaches. Some people respond well to slow rhythms, gentle instrumentals, or songs they recognize from earlier years. Formal music-based therapy may help depressive symptoms in dementia, but evidence does not show a reliable reduction in agitation or a specific effect on sundowning. At home, use music as an optional comfort activity and follow the person’s response.8

Keep the experience simple:

  • Choose familiar music at a comfortable volume and turn off competing background sound.
  • Stop or change the music if it increases distress, restlessness, or unwanted memories.

A caregiver helping an elderly woman eat a calm, nutritious meal, highlighting how diet and regular meals can support seniors affected by sundowning syndrome

4. Consider Diet, Routine, and Professional Guidance around Supplements

Regular mealtimes and hydration can support more stable evenings. Sudden hunger or thirst may contribute to restlessness. Offer familiar food and drinks through the day, following any swallowing advice or prescribed fluid restriction. Supplements such as melatonin should be discussed with a clinician rather than added as a routine response to evening confusion.

What Should Seniors Eat to Stay Healthy at Home

Related: What Should Seniors Eat to Stay Healthy at Home? A Complete Guide to Healthy Meals for Seniors

Build support into the usual routine:

  • Offer meals at predictable times and a suitable snack if your loved one is hungry.
  • Keep drinks accessible and offer them regularly instead of relying on requests.
  • Ask a pharmacist or doctor to review supplements alongside existing medicines.

5. Support Regular Healthcare Visits

Keeping up with routine appointments allows healthcare providers to notice changes over time. Writing down observations about evening behaviours such as sleep patterns, mood shifts, or increased confusion can help guide these conversations and ensure concerns are addressed thoughtfully. Include changes in hearing, vision, dental comfort, and mobility that may make the evening environment harder to manage.

A brief record can include:

  • Start and finish times, what happened beforehand, and what helped.
  • Changes in sleep, eating, drinking, toileting, pain, or medication.
  • Any falls, exit attempts, or new difficulty completing familiar care tasks.

6. Help Create a Predictable Bedtime Routine

Evenings often feel easier when they follow a familiar flow. Quiet activities and consistent steps, such as washing up, changing clothes, or reading, can provide recognizable cues that bedtime is approaching. Keep enough light for safe movement and orientation while reducing unnecessary noise and activity. Expect to adjust the pace on difficult nights rather than insisting that every step happens at an exact time.

Use a familiar sequence:

  • Offer the toilet and check comfort before settling down.
  • Give one simple cue at a time and allow time to respond.
  • Keep familiar objects nearby and the route to the bathroom clear.

7. Create a Peaceful Home Environment

Reducing sensory clutter can make a meaningful difference. Turn on comfortable, even lighting before daylight fades so shadows and reflections are less confusing. Lower background noise and keep frequently used spaces familiar and uncluttered. Aim for a space your loved one can recognize and move through safely, rather than making the whole home dim.1

Check the environment before the usual difficult period:

  • Close curtains if reflections or outdoor darkness seem upsetting.
  • Reduce competing sounds from television and conversations.
  • Keep walkways clear and provide safe lighting toward the bathroom.

Emma, whose father lives with memory changes, noticed that closing unused rooms and keeping lighting consistent made evenings feel less overwhelming. “It wasn’t a big change,” she said, “but it made the house feel quieter and easier to understand.”

Natural Remedies and Non-Drug Approaches for Sundowning

“Natural” does not necessarily mean effective or risk-free. These options may support comfort or sleep, but evidence about general dementia symptoms should not be interpreted as proof that they treat sundowning.

  • Bright light therapy and morning light exposure: Morning daylight can be part of a consistent daily routine, while a therapeutic light box is a separate intervention requiring advice about timing and suitability. Evidence for bright light therapy in dementia remains mixed, and it has not been established as a reliable way to stop sundowning.9
  • Melatonin: Melatonin has not shown a clear benefit for insomnia in Alzheimer’s disease and is not recommended as a routine solution for it. Ask a clinician whether there is a specific reason to consider it, including possible interactions or next-day drowsiness. Sleep-management guidance.
  • Activity and nap timing: Gentle daytime activity and avoiding long, late naps may support the sleep–wake routine. Physical and social activities may modestly improve sleep, but evidence for restricting daytime sleep is limited, so do not force an exhausted person to stay awake.5
  • Aromatherapy: Evidence does not convincingly show that aromatherapy improves dementia symptoms or sundowning. It should not replace assessment of distress, and essential oils should not be swallowed or applied undiluted to skin.10
  • Music: Familiar music may provide enjoyment and connection, and music-based therapy may improve depressive symptoms in dementia. It has not shown a reliable effect on agitation, so continue only when the person appears comfortable and engaged.8
  • Hydration and meal timing: Regular food and fluids address hunger and thirst that can contribute to distress. They are supportive care measures, not a proven sundowning treatment, and should follow individual dietary, swallowing, and fluid guidance.4

An elderly man speaking with a healthcare professional, representing medical consultation for managing sundowner’s syndrome

Caregiver sitting quietly with eyes closed, reflecting on stress and self-care, illustrating the importance of avoiding caregiver burnout.

Related: Avoiding Caregiver Burnout: Strengthening Relationships with Family Members

When to Involve a Doctor

A familiar evening pattern and a sudden change from your loved one’s usual behaviour need different responses. Use the timing, severity, and accompanying symptoms to decide how quickly to seek help.

When Sundowning Symptoms Need Medical Attention

Raise at the Next Appointment

Contact a Doctor Now

A Familiar Evening Pattern That Remains Manageable and Safe

Sudden New Confusion or a Marked Change in Alertness: Seek Emergency Assessment

Recurring Sleep Disruption without an Acute Change

Rapid Worsening, Suspected Infection, Fever, or Possible Delirium

Questions about Routine Medication Timing or Supplements

New Symptoms after Starting a Medicine or Changing a Dose

Gradually Increasing Support Needs

New Aggression, Exit Attempts, or Another Immediate Safety Concern

Mild, Recurring Discomfort That Has Already Been Assessed

Possible Unexpressed Pain, Such as New Grimacing, Guarding, or Distress during Movement

Call 911 if there is sudden new confusion, reduced responsiveness, or immediate danger that you cannot safely manage. Do not assume an abrupt change is sundowning simply because it happens in the evening.7

Medication should target an assessed problem and be reviewed for benefit and harm; it is not a way to sedate someone into an evening routine. Depending on the symptoms and diagnosis, a prescriber may consider:

  • Antidepressants: May be considered for a diagnosed mood disorder, with the choice guided by the individual’s symptoms and health.
  • Anti-anxiety medications: Some, particularly benzodiazepines, can worsen confusion, cause sedation, or increase falls and require careful consideration.
  • Antipsychotics: Reserved for selected situations involving severe distress or risk of harm because they carry serious risks, including stroke and increased mortality in older adults with dementia.

People with Lewy body dementia can be particularly sensitive to antipsychotics, so the dementia diagnosis must be part of the prescribing discussion.6 3

A Hero Home Care caregiver visiting an elderly man at home, showing support for families managing sundowning

When Extra Support Can Help Ease the Load

Supporting a loved one through sundowning can be emotionally and physically tiring, especially when evenings require more patience and attention. Many families do their best to manage on their own for as long as possible. Still, there may come a point when extra support helps everyone feel steadier and less overwhelmed.

Some families choose in-home care services, such as Dementia Support and Alzheimer’s Care, to share the responsibility of evening routines. Support like this can bring a calm, experienced presence into the home, helping maintain familiar patterns, reduce stress, and ease the pressure on family caregivers without taking away their role.

For some families, this means having a few quiet hours to rest or sleep. For others, it offers reassurance that someone who understands memory-related changes is there during the part of the day that often feels most unpredictable. This kind of help is not about replacing family involvement. It’s about creating breathing room so caregivers can continue showing up with patience and care.

One daughter, Claire, shared that evenings became easier once she had support a few nights a week. “I didn’t realize how tired I was,” she said. “Knowing someone else could be there helped me show up calmer and more patient the rest of the time.”

Choosing additional support is a personal decision, and it doesn’t have to be permanent or all-encompassing. Even small amounts of help can make a meaningful difference when evenings feel heavy.

When Episodes Become Unmanageable

When your loved one needs someone present through repeated evening or nighttime episodes, routine changes alone may no longer meet the supervision need. Discuss the change with their healthcare team and arrange coverage for the hours when family members cannot safely remain available. Depending on the assessment, this may involve evening visits, awake overnight support, or round-the-clock care.

Signs that the current arrangement needs more support include:

  • Repeated wandering, exit attempts, or unsafe movement that needs an immediate response.
  • Evening care tasks regularly becoming unsafe or impossible for one person to manage.
  • Interrupted sleep leaving the family caregiver too exhausted to provide safe care the next day.

For families considering Alzheimer’s and dementia care in North Vancouver, a care consultation can help identify which evening routines and supervision hours need support.

Sources:

  1. Mayo Clinic — Sundowning: Late-Day Confusion
  2. Dementia UK — Sundowning
  3. Dementia UK — Dementia With Lewy Bodies
  4. Alzheimer Society of Canada — Restlessness or Confusion
  5. Cochrane — Non-Medicine Interventions for Sleep Problems in Dementia
  6. Alzheimer’s Association — Treatments for Behavior
  7. NHS — Sudden Confusion (Delirium)
  8. Cochrane — Music-Based Therapy for People With Dementia
  9. Alzheimer’s Society — Light Therapy and Dementia
  10. Cochrane — Aromatherapy for Dementia
  11. Cleveland Clinic — Sundown Syndrome