Why Dementia Symptoms Get Worse in the Evening and What Families Can Do
- Dementia symptoms may get worse in the evening because changes in the brain can disrupt the body’s sleep-wake cycle, while fatigue, lower light, overstimulation, pain, hunger, and other unmet needs can add to confusion and agitation.
- This pattern is often called sundowning and may include pacing, anxiety, irritability, wandering, repeated questions, disorientation, and difficulty settling down for sleep.
- Families can often reduce evening distress by keeping routines predictable, encouraging daytime activity and natural light, limiting stimulation later in the day, and checking for physical or medical issues that may be making symptoms worse.
What Is Sundowning in Dementia?
Sundowning is a term used to describe increased confusion or behavioral changes that appear or become worse in the late afternoon, evening, or nighttime hours.
Someone experiencing sundowning may become anxious, agitated, restless, disoriented, suspicious, or unable to settle down. They may pace, wander, repeatedly ask the same questions, have difficulty sleeping, or become confused about where they are.
The Alzheimer’s Association explains that sundowning is not a separate disease. Instead, it describes a group of symptoms and behaviors that can occur in people living with Alzheimer’s disease or other forms of dementia.
Researchers are still working to understand how common sundowning is. Estimates vary considerably because studies have used different definitions and patient populations. In one 2023 study of 184 people with dementia attending a memory clinic, 21.2% experienced sundowning, with agitation, irritability, and anxiety among the most common symptoms.
Why Do Dementia Symptoms Get Worse in the Evening
There is no single proven cause of sundowning. Current research suggests that several changes associated with dementia may overlap and make late afternoon and evening more difficult.
The body’s internal clock may become disrupted
Our bodies follow a roughly 24-hour cycle known as the circadian rhythm. It helps regulate when we feel awake, tired, hungry, and ready to sleep.
Alzheimer’s disease and other neurodegenerative conditions can disrupt these normal day and night rhythms. Research has found changes in activity patterns among people with Alzheimer’s disease, including more nighttime activity, less daytime activity, and greater fragmentation of normal circadian rhythms.
This may help explain why someone can become increasingly restless or confused when the day begins winding down.
Fatigue can build throughout the day
Living with dementia requires considerable mental effort. Conversations, appointments, household activity, changes in routine, and even ordinary decisions can become harder for the brain to process.
By late afternoon, mental and physical fatigue may make it more difficult for someone to interpret what is happening around them.
Changing light may increase confusion
As sunlight fades, rooms become darker, shadows appear, and familiar objects may become harder to recognize.
For someone whose brain already has difficulty interpreting visual information, those changes can increase uncertainty or fear. Keeping the home comfortably lit as evening approaches may make the environment easier to understand.
Physical needs can affect behavior
Not every change in behavior is caused directly by dementia.
Pain, hunger, thirst, constipation, poor sleep, medication side effects, hearing problems, vision problems, and a noisy or stressful environment can all contribute to behavioral changes. The National Institute on Aging recommends looking for physical and environmental causes when behavior changes.
This is why behavior should be viewed as information. Restlessness or agitation may be a loved one’s way of communicating a need they can no longer easily explain.
Signs of Sundowning Families May Notice
Sundowning doesn’t look the same for everyone, but families may notice a pattern of symptoms becoming stronger as afternoon turns into evening.
Common signs can include increased confusion, anxiety, irritability, pacing, restlessness, wandering, difficulty recognizing familiar surroundings, repeated requests to go home, hallucinations, suspiciousness, or trouble settling down for sleep.
The pattern matters. If these behaviors regularly appear or intensify around the same part of the day, sundowning may be contributing.
However, you shouldn’t automatically assume that sudden confusion or a dramatic change is sundowning. Infections such as a UTI, dehydration, medication side effects, pain, low blood sugar, lack of sleep, or other acute medical problems can also cause sudden changes in thinking or behavior and may require prompt medical attention.
What Families Can Do to Reduce Sundowning
There is no single solution that works for every person, but creating a more predictable day can often help.
Keep the daily routine consistent
Try to maintain regular times for waking, meals, activities, and bedtime. Familiar routines reduce the number of changes a person with dementia has to process and can provide reassuring cues about what comes next.
Whenever possible, schedule more demanding activities earlier in the day. Doctor appointments, outings, bathing, and other tasks may be easier when your loved one is rested and alert.
Encourage daylight and daytime activity
Regular activity during the day can support a healthier sleep and wake pattern. Walking, gardening, folding laundry, listening to music, or participating in another familiar activity can provide useful stimulation without making the day overwhelming.
Natural daylight may also help reinforce the body’s day and night cues. The National Institute on Aging recommends daily exercise, regular sleep schedules, and calmer evenings for people with Alzheimer’s who experience sleep problems.
Make evenings calmer
As the day winds down, reduce unnecessary stimulation. Loud television, multiple conversations, household chores, or a busy environment may become harder to process.
Keep rooms well lit as daylight fades, then gradually create a calmer atmosphere as bedtime approaches. Familiar music, photographs, a quiet conversation, or another soothing activity may help someone transition into the evening.
Nightlights in bedrooms, hallways, and bathrooms can also make nighttime movement safer and less confusing.
Look for patterns and triggers
Keep a simple record when difficult evenings occur. Note what time symptoms started, what your loved one was doing beforehand, whether they slept during the day, what they ate, and what seemed to calm them.
Over time, patterns may emerge. You may discover that long appointments create difficult evenings, late naps interfere with sleep, or hunger consistently appears before agitation.
Those observations can also give doctors and professional caregivers useful information when helping you adjust the care plan.
When Evening Confusion Needs Medical Attention
A recurring evening pattern is different from a sudden change in mental status or behavior.
If your loved one suddenly seems much more confused, agitated, sleepy, fearful, or unlike themselves, contact their healthcare provider. Fever, infections, dehydration, medication side effects, and other medical problems can cause delirium and may require prompt treatment.
Medical guidance is also important when symptoms create a risk of falls, wandering, injury, severe sleep disruption, or behaviors the family can no longer manage safely.
Families should also speak with a healthcare professional before using medications or supplements to address sleep or agitation. For many dementia-related sleep and behavioral concerns, experts recommend trying appropriate non-drug strategies first.
Sundowning Can Be Hard on Family Caregivers Too
Sundowning affects more than the person living with dementia.
Evening symptoms often become strongest when family caregivers are already tired from a full day. Pacing, repeated questions, wandering, disrupted sleep, and nighttime supervision can make it difficult for everyone in the home to get the rest they need.
The demands on family dementia caregivers are enormous. The 2026 Alzheimer’s Disease Facts and Figures report estimates that 12.7 million unpaid caregivers supported people with Alzheimer’s disease or other dementias in 2025, contributing a combined 19.6 billion hours of care. On average, that works out to nearly 30 hours of caregiving each week for each unpaid caregiver.
When evenings repeatedly become the hardest part of the day, the solution may not be asking a family caregiver to try harder. It may be time to strengthen the care plan.
How In-Home Dementia Care Can Help
Professional in-home dementia care can provide another layer of support while allowing an older adult to remain in familiar surroundings.
A caregiver can help maintain routines, encourage meals and hydration, provide companionship, support safe mobility and bathroom routines, offer medication reminders, and create a calmer transition into the evening. Additional support can also give family caregivers time to rest, work, spend time with other family members, or simply step out of the caregiver role for a while.
At New Wave Home Care, we support older adults and families in Pasadena, the greater Los Angeles area, and communities throughout Southern California with compassionate in-home dementia care built around each person’s routines, preferences, safety needs, and dignity.
If dementia symptoms are making evenings harder for your loved one and your family, you don’t have to manage every difficult moment alone. Contact New Wave Home Care to learn how thoughtful in-home support can help make life at home safer, calmer, and more sustainable.
