Sundowning and Dementia: How We Support Better Sleep and Calmer Evenings
If your loved one becomes increasingly confused, agitated, or distressed in the late afternoon or evening, you are not alone. This pattern is so common in dementia that it has a name: sundowning.
For families, sundowning can be one of the most exhausting and upsetting aspects of caring for someone living with dementia. Understanding what causes it, and what genuinely helps, can make a real difference, both to your loved one's wellbeing and to your own.
What is sundowning?
Sundowning refers to a pattern of increased confusion, agitation, or behavioural changes that typically occur in the late afternoon, evening, or at night. It is not a separate condition but a recognised symptom associated with dementia, particularly Alzheimer's disease and Lewy body dementia.
The name comes from the timing, as daylight fades, symptoms tend to worsen. For some people this may be mild restlessness; for others it can involve significant distress, disorientation, or attempts to leave the house.
How common is sundowning?
Sundowning affects a significant proportion of people living with dementia. It tends to become more pronounced in the middle and later stages, though it can begin earlier. It is one of the leading reasons families seek residential dementia care, particularly when managing it at home becomes unsafe or unsustainable.
What does sundowning look like?
Sundowning can present differently from person to person, but common signs include:
Increased confusion or disorientation, particularly about time and place
Agitation, restlessness, or pacing
Anxiety, suspicion, or distress
Repeated questions or requests
Seeing or hearing things that are not there
Attempting to leave, often with a sense of urgency ("I need to get home" or "I need to collect the children")
Difficulty settling or sleeping through the night
Mood changes, including tearfulness or uncharacteristic anger
Sundowning episodes can last for a few hours or persist well into the night. The unpredictability is part of what makes it so draining for those caring at home.
What causes sundowning?
The exact cause is not fully understood, but research points to several contributing factors.
Disruption to the internal body clock Dementia affects the brain's ability to regulate the circadian rhythm, the internal clock that governs our sleep-wake cycle. As this becomes disrupted, the brain struggles to distinguish between day and night, leading to increased wakefulness and confusion in the evening hours.
Fading light and sensory changes Reduced light in the evening can make it harder for someone living with dementia to make sense of their environment. Shadows, reflections, and low lighting can be misinterpreted and trigger fear or confusion.
Fatigue accumulating through the day Cognitive effort builds throughout the day. By the afternoon, the mental reserves needed to interpret the world and manage anxiety are depleted, making distressing symptoms more likely.
Unmet physical needs Pain, hunger, thirst, constipation, or an undiagnosed infection can all worsen sundowning. Because the person may not be able to communicate these clearly, they can present as agitation instead.
Overstimulation or understimulation Both too much activity and too little can contribute. A day that has been too busy or too quiet can affect how settled someone is by evening.
How is sundowning managed? What actually helps?
There is no single solution, and what works will vary from person to person. However, there is good evidence for a number of approaches.
Consistent daily routine
Structure is one of the most powerful tools available. A predictable sequence of meals, activities, rest, and evening wind-down gives the brain reassuring cues throughout the day. Disruptions to routine, even positive ones such as visits or outings, can sometimes trigger increased agitation in the hours that follow.
Meaningful activity during the day
Appropriate levels of physical and social engagement during the day support better sleep at night. The key word is appropriate as activities should be calming and achievable, not overstimulating or frustrating.
At Lavender Fields, daily life is carefully structured to support residents living with dementia. Our activities and events programme is designed around individual preferences and abilities, with the aim of maintaining purpose and connection throughout the day.
Access to natural light and outdoor space
Exposure to natural daylight, particularly in the morning, helps regulate the circadian rhythm. Regular time outdoors, even briefly, can have a meaningful impact on sleep quality and evening settled-ness.
Our grounds and gardens are designed to be safely accessible, giving residents the opportunity to spend time outside in a calm, familiar environment.
A calm, well-lit evening environment
As daylight fades, the environment should adapt. Good lighting in the early evening reduces the disorientation caused by shadows and glare. Calm, familiar spaces with limited background noise help signal to the brain that it is time to wind down.
Attention to physical comfort
Any care team supporting someone with sundowning should routinely check for signs of pain, hunger, thirst, or infection, particularly urinary tract infections, which can dramatically worsen confusion in people living with dementia and are often missed.
Avoiding stimulants in the afternoon
Caffeine, in particular, can affect sleep quality and evening agitation. Adjusting when and what someone eats and drinks in the afternoon can sometimes make a notable difference.
A gentle, calm response
How staff and family members respond during a sundowning episode matters. Arguing, correcting, or trying to reason with someone who is disoriented tends to increase distress rather than reduce it. Calm reassurance, gentle redirection, and validation of feelings without confirming any false beliefs is a more effective approach.
This is a skill that comes with training and experience, and it is something Lavender Fields staff are equipped to provide.
Why the right care environment makes such a difference
Managing sundowning at home can be exhausting and, over time, unsustainable. When nights become difficult, the impact on family carers can be profound with broken sleep, constant vigilance, and the emotional weight of watching a loved one in distress.
A specialist dementia care environment is designed, in part, around exactly these challenges. At Lavender Fields, our dementia care is built around understanding the whole person, their history, their preferences, their triggers, and what brings them comfort.
Our daily routines are consistent and purposeful. Our spaces are calm and familiar. And our team is present through the evening and overnight hours, so no one faces those moments alone.
The village setting itself plays a role too. Access to meaningful daily life, such as the coffee shop, the gardens, the social spaces of the Hub, means residents have genuine engagement during the day, which supports better sleep and greater calm by evening.
Could a short stay help?
If you are caring for someone at home and sundowning is becoming difficult to manage, a short-term respite stay at Lavender Fields can give your loved one time in a structured, specialist environment and give you the rest you need.
Sometimes a short stay also helps families understand what residential care can offer, before making any longer-term decisions.
Frequently asked questions about sundowning
What time does sundowning usually start? Sundowning typically begins in the mid-to-late afternoon, often between 3pm and 6pm, and can continue into the evening or overnight. The timing can vary from person to person and may shift over time.
Does sundowning get worse as dementia progresses? It often does, particularly in the middle stages of dementia. Some people experience it less intensely in the very late stages, though this varies.
Is sundowning the same as delirium? They share some features but are distinct. Sundowning follows a predictable daily pattern linked to dementia. Delirium tends to come on suddenly and is usually triggered by an acute cause such as infection, medication change, or surgery. If someone living with dementia experiences a sudden and marked increase in confusion, medical advice should be sought.
Can medication help with sundowning? In some cases, medication may be considered where behavioural approaches have not been sufficient and distress is significant. This should always be a last resort and reviewed carefully, as many sedative medications carry risks for older people and those with dementia. Non-pharmacological approaches are always the first line of support.
What should I do if sundowning is becoming unmanageable at home? Speak to your GP or a dementia specialist for guidance. It is also worth exploring whether additional support through respite care or residential care might be appropriate. You do not need to wait for a crisis point.
How Lavender Fields supports residents living with dementia
Lavender Fields is a care village near Pocklington in East Yorkshire, offering specialist dementia care within Provence House. We support residents from early onset through to end of life, with care that adapts as needs change.
If you are concerned about sundowning, or simply want to understand whether Lavender Fields could be the right home for your loved one, we would welcome a conversation. There is no pressure and no obligation, just an honest, unhurried discussion about what your family needs.
Get in touch or arrange a visit at a time that suits you.