What Is Sundowning in Dementia: What Families Need to Know

Sundowning in dementia is one of the most challenging and emotionally draining experiences a family caregiver can face. If your loved one with dementia becomes increasingly confused, agitated, or distressed in the late afternoon or evening, you may already be living with sundowning without knowing what it is called.

At Bristol Hospice, we support families navigating every stage of dementia, including the moments that feel most overwhelming and least understood. This article explains what sundowning is, what causes it, what stage of dementia it typically occurs in, and how families can respond with compassion and practical support.

This is general educational information and does not replace guidance from your loved one’s physician or care team. Every person with dementia experiences the condition differently and what works for one family may not work for another.

What Is Sundowning in Dementia

Sundowning in dementia is a pattern of increased confusion, agitation, anxiety, or behavioral changes that occurs in the late afternoon, evening, or nighttime hours in people living with dementia. It is also called sundown syndrome or late day confusion. The term refers to the timing of symptoms, which typically worsen as the day goes on and the sun begins to set.

Sundowning is not a separate diagnosis. It is a set of symptoms that occurs as part of dementia, most commonly in Alzheimer’s disease but also in other forms of dementia including vascular dementia and Lewy body dementia. It affects a significant portion of people living with dementia and is one of the most commonly cited reasons family caregivers describe their situation as unsustainable without additional support.

What Stage of Dementia Is Sundowning

Sundowning most commonly occurs in the middle to later stages of dementia. It is not typically present in the earliest stages when cognitive decline is mild. As dementia progresses and the brain’s ability to regulate sleep, time awareness, and emotional responses becomes more significantly impaired, sundowning tends to emerge and can intensify over time.

In the middle stages of dementia, sundowning may appear as increased restlessness or confusion in the evenings. In the later stages it can escalate to significant agitation, distress, or behavioral changes that are difficult for family caregivers to manage safely at home without support.

If sundowning is becoming more frequent, more intense, or more difficult to manage, it is often a signal that the level of care your loved one needs has increased. This is one of the conversations that families navigating late stage dementia often have with a hospice care team.

What Does Sundowning Look Like

Sundowning looks different for every person with dementia, but families commonly describe a recognizable shift that happens in the late afternoon or early evening. A person who may have been calm and relatively coherent during the day begins to change as the hours progress.

Common signs of sundowning in dementia include:

• Increased confusion or disorientation, particularly about time or place
• Restlessness, pacing, or an inability to settle
• Agitation, irritability, or sudden mood changes
• Suspicion or accusations that feel out of character
• Seeing or hearing things that are not there
• Insistence on going somewhere or doing something with increasing urgency
• Crying, calling out, or repeated questions
• Difficulty sleeping or complete reversal of day and night patterns

For family caregivers, the evenings can become the most difficult part of the day. The combination of exhaustion from a full day of caregiving and the escalating needs of a loved one experiencing sundowning creates a situation that is physically and emotionally demanding in ways that are hard to overstate.

What Causes Sundowning in Dementia

The exact causes of sundowning in dementia are not fully understood, but researchers and clinicians believe several factors contribute to why symptoms worsen in the late afternoon and evening hours.

Disruption to the internal body clock is one of the primary factors. Dementia damages the part of the brain that regulates circadian rhythm, the internal system that governs sleep and wake cycles. When this system is impaired, the brain loses its ability to accurately process the time of day and to transition smoothly between wakefulness and sleep.

Fatigue accumulation throughout the day also plays a role. People with dementia often expend significant cognitive effort navigating daily life and by late afternoon that effort has depleted their ability to maintain orientation and emotional regulation.

Reduced light in the evening may also contribute. As natural light decreases, visual cues that help orient a person with dementia become less clear, which can increase confusion and anxiety.

Other factors that may worsen sundowning include pain or physical discomfort that the person cannot clearly communicate, medication timing, dehydration, urinary tract infections, and changes in routine or environment.

How to Respond to Sundowning at Home

Responding to sundowning requires patience, flexibility, and an understanding that the person experiencing it is not choosing to behave this way. The confusion and distress are real and they arise from changes in the brain that are beyond the person’s control.

Families often find the following approaches helpful in managing sundowning at home. These are general suggestions and what works will vary based on the individual.

Maintaining a consistent daily routine helps the brain anticipate what comes next and reduces the disorientation that triggers sundowning episodes. Keeping wake times, mealtimes, and activity schedules as consistent as possible provides structure that can be calming.

Increasing light exposure during the day and using bright, warm lighting in the late afternoon and early evening can help maintain orientation and reduce the impact of fading natural light. Some families find that light therapy lamps used in the afternoon are helpful.

Reducing stimulation in the late afternoon and evening is often beneficial. Turning off the television, reducing noise levels, and creating a calm and predictable environment can help ease the transition into evening hours.

Gentle reassurance and redirection are usually more effective than trying to correct or argue with a person who is confused during a sundowning episode. Meeting the person where they are emotionally rather than insisting on factual reality tends to reduce rather than escalate distress.

Physical comfort matters. Ensuring your loved one is not in pain, has had adequate fluids, and is comfortable in their environment addresses some of the physical factors that can worsen sundowning.

Your loved one’s physician or care team can help you assess whether any underlying physical issues are contributing to sundowning and whether any adjustments to medications or care routines might be helpful. Always consult your care team before making changes to medications or treatment plans.

When Sundowning Becomes Too Much to Manage at Home

Sundowning is one of the most commonly cited reasons families reach a point where they can no longer safely or sustainably manage a loved one with dementia at home without additional support. When evening episodes become severe, when sleep deprivation affects both the patient and the caregiver, or when the distress involved feels beyond what one family can absorb, it is important to reach out for help.

This is not failure. It is recognition that the level of care required has exceeded what any individual family can provide alone. Hospice care for dementia patients is specifically designed to support families through exactly this kind of escalation.

Hospice care teams that specialize in dementia understand sundowning and can help develop individualized approaches to managing symptoms, support family caregivers with education and respite, and ensure that the patient’s comfort and dignity remain at the center of care even as the disease progresses.

Sundowning and Hospice Care for Dementia

Hospice care is appropriate for dementia patients when the disease has progressed to a point where comfort and quality of life have become the primary goals of care. Sundowning in the later stages of dementia is often one of several indicators that a family may benefit from exploring what hospice has to offer.

A hospice care team supporting a dementia patient experiencing sundowning can provide regular nursing visits to assess and manage symptoms, guidance for family caregivers on how to respond effectively and safely, social work support for the emotional and practical challenges the family is facing, and volunteer support that gives caregivers genuine rest during the hours when sundowning is most likely to occur.

Bristol Hospice has extensive experience supporting patients with dementia and their families. Our teams understand that dementia is not only a medical condition. It is a family experience that touches every person in the household and requires care that honors that reality.

If you are caring for a loved one with dementia and sundowning is becoming increasingly difficult to manage, we encourage you to reach out. A conversation costs nothing and you do not need to be in crisis to ask for support.

Frequently Asked Questions About Sundowning in Dementia

What is sundowning in dementia?
Sundowning in dementia is a pattern of increased confusion, agitation, and behavioral changes that occurs in the late afternoon and evening hours. It is caused by changes in the brain that affect circadian rhythm and the ability to process time and environment accurately.

What stage of dementia is sundowning?
Sundowning most commonly occurs in the middle to later stages of dementia. It is not typically present in early stage dementia and tends to become more pronounced as the disease progresses.

What does sundowning look like?
Sundowning can appear as increased confusion, restlessness, agitation, suspicion, pacing, crying, or difficulty sleeping that begins in the late afternoon or evening. The specific symptoms vary from person to person.

What causes sundowning in dementia?
Sundowning is linked to damage in the part of the brain that regulates circadian rhythm, fatigue accumulation throughout the day, reduced light in the evening, and in some cases underlying physical issues such as pain, dehydration, or infection.

How do you calm someone who is sundowning?
Gentle reassurance, redirection, reducing stimulation, maintaining routine, and ensuring physical comfort are generally helpful approaches. Arguing or trying to correct the person during an episode tends to increase rather than reduce distress. Consult your loved one’s care team for guidance specific to your situation.

When should a dementia patient with sundowning consider hospice care?
When sundowning becomes severe, when it can no longer be safely managed at home, or when the overall progression of dementia has shifted the focus of care toward comfort and quality of life, hospice care is worth exploring. A hospice evaluation is a conversation with no obligation and can help families understand their options.

Is sundowning a sign that death is near in dementia?
Sundowning alone is not necessarily a sign that death is imminent. It is a symptom of progressing dementia that can occur for months or years. However if sundowning is intensifying significantly alongside other signs of decline, it may indicate that the disease is in its later stages. Speak with your loved one’s physician or hospice care team for guidance specific to their condition.

You Do Not Have to Navigate This Alone

Caring for a loved one with dementia who experiences sundowning is one of the most exhausting and emotionally demanding experiences a family can face. The evenings can feel endless. The distress of watching someone you love struggle with confusion and fear is a particular kind of grief that is hard to describe to anyone who has not lived it.

Bristol Hospice is here for families in exactly this situation. Not just when the end is very near, but when the journey has become too heavy to carry without support. Our teams bring experience, compassion, and practical expertise to every family we serve and we are ready to help yours.

Learn More About Hospice Care for Dementia Patients

Bristol Hospice provides compassionate hospice care for dementia patients and their families across 78 locations in 25 states. To learn more or to speak with a care team member, visit bristolhospice.com or talk to our care team today.

This article is for general educational purposes only and does not replace guidance from your loved one’s physician or hospice care team. Every person’s experience with dementia is unique. Please consult qualified medical professionals for advice specific to your loved one’s situation.