If you’re caring for someone with dementia, you may have noticed that evenings bring a troubling shift. Your loved one becomes more confused, agitated, or anxious as the sun goes down. This phenomenon, known as sundowning (or sundown syndrome), affects up to 66% of people living with Alzheimer’s disease and other forms of dementia. Understanding why it happens and what you can do about it can make a real difference—for both of you.
What Is Sundowning?
Sundowning refers to a pattern of increased confusion, agitation, anxiety, or behavioural changes that occur in the late afternoon or evening. It is not a disease itself but a cluster of symptoms commonly associated with mid-to-late stage dementia. The name comes from the timing—symptoms tend to appear or worsen as daylight fades.
Sundowning can look different from person to person. Some individuals become restless and pace. Others may become verbally or physically aggressive. Some experience heightened paranoia or hallucinations, while others simply become tearful and withdrawn. The common thread is that these symptoms emerge or intensify during the late afternoon or evening hours.
Common Signs of Sundowning
Recognising sundowning early allows you to put strategies in place before episodes escalate. Watch for these common indicators:
- Increased confusion or disorientation in the late afternoon
- Pacing, wandering, or restlessness as evening approaches
- Heightened irritability, agitation, or mood swings
- Difficulty settling down for the night or frequent nighttime waking
- Suspicion, paranoia, or seeing/hearing things that aren’t there
- Crying, shouting, or emotional outbursts without an obvious trigger
- Attempts to leave the home (“I need to go home” even when at home)
- Shadowing—following their caregiver from room to room
What Causes Sundowning?
Researchers are still working to fully understand sundowning, but several factors are believed to contribute. In most cases, it is a combination of biological, environmental, and psychological triggers rather than a single cause.
Disrupted Circadian Rhythm
Dementia damages the suprachiasmatic nucleus, the part of the brain responsible for regulating the body’s internal clock. When this clock breaks down, the normal sleep-wake cycle becomes disrupted, leading to confusion about what time of day it is and difficulty transitioning from wakefulness to sleep.
Fatigue and Overstimulation
By late afternoon, a person with dementia has been processing information all day with a brain that is already working harder than usual. Mental and physical fatigue accumulate, making it harder to cope with even small demands. An overstimulating day—visitors, outings, loud environments—can increase the likelihood of sundowning episodes.
Reduced Lighting
As natural light fades, shadows lengthen and familiar surroundings can look different. For someone with impaired perception, these changes can be disorienting or frightening. Low light can also make it harder to distinguish objects, leading to misinterpretation and anxiety.
Unmet Physical Needs
Hunger, thirst, pain, or the need to use the toilet can all trigger or worsen sundowning behaviours. Because a person with dementia may struggle to communicate these needs, the discomfort manifests as agitation or distress instead.
Practical Strategies to Manage Sundowning
While sundowning cannot be eliminated entirely, there are evidence-based strategies that can significantly reduce the frequency and severity of episodes. The key is creating a predictable, calm environment during the vulnerable hours.
1. Establish a Consistent Daily Routine
Predictability is calming. Try to keep mealtimes, activities, and bedtime at the same time each day. A structured routine reduces the cognitive load on your loved one and provides a sense of safety. Schedule more stimulating activities—such as outings or exercise—for the morning when energy and cognition tend to be at their best.
2. Manage the Lighting
Begin turning on warm, bright lights before dusk so the transition from daylight to indoor lighting is gradual. Avoid sudden changes from bright to dim environments. Exposure to natural light during the day, particularly in the morning, can also help regulate circadian rhythms. Some families find that light therapy lamps used in the morning make a meaningful difference.
3. Create a Calming Evening Routine
In the hours leading up to bedtime, reduce noise, limit visitors, and turn off stimulating media such as television. Introduce calming activities instead: gentle music, looking at family photo albums, light hand massage, or a warm drink. The goal is to signal to the brain that the day is winding down.
4. Monitor Diet and Hydration
Avoid large meals close to bedtime, but ensure your loved one is not hungry. Offer a light, nutritious snack in the late afternoon. Limit caffeine and sugar after midday, as both can contribute to restlessness. Ensure adequate hydration throughout the day—dehydration is a common and often overlooked trigger.
5. Address Pain and Discomfort
If your loved one has chronic conditions such as arthritis, urinary tract infections, or dental problems, untreated pain may be driving agitation. Work with their GP to ensure pain is managed effectively. Sometimes a simple change in medication timing can reduce evening discomfort.
6. Use Gentle Redirection
When sundowning episodes begin, avoid arguing or trying to reason. Instead, acknowledge the emotion (“I can see you’re feeling upset”), offer reassurance, and gently redirect to a calming activity. Approach with a soft voice and open body language. Sometimes a simple change of scene—moving to a different room—can help break the cycle.
When to Seek Professional Help
If sundowning episodes are becoming more frequent, more intense, or are putting anyone at risk of harm, it is important to consult your loved one’s GP or specialist. They can rule out other medical causes such as infections, medication side effects, or sleep disorders. In some cases, adjustments to existing medications or short-term pharmacological interventions may be recommended.
How Eli Can Help
Managing sundowning is easier when you have support. Eli, Careloom’s AI-powered dementia care companion, is available around the clock to help you understand what’s happening, suggest in-the-moment strategies, and provide emotional support during difficult evenings. Whether it’s 2am and you need guidance, or you’re planning ahead for the week, Eli is here for you.
Try Eli free today and discover how personalised, evidence-based support can transform your caregiving experience.
Key Takeaways
- Sundowning affects up to two-thirds of people with dementia and typically worsens in mid-to-late stages
- Contributing factors include circadian rhythm disruption, fatigue, reduced light, and unmet physical needs
- Consistent routines, managed lighting, and calming evening activities can significantly reduce episodes
- Always consult a healthcare professional if symptoms suddenly change or worsen
- You are not alone—tools like Eli provide 24/7 guidance and emotional support for caregivers
