How to manage sundowning in dementia: a caregiver's guide for families
Why late-day confusion and agitation happen in dementia, the stage when sundowning is most common, the evening habits that help, and when to call a doctor.
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It often starts the same way. The morning was fine, lunch was fine. Then around four o'clock, as the light changes, your mother stops recognizing the kitchen she has cooked in for forty years. She says she wants to go home, though she is home. She paces, frightened of something she can't name. By dinner she's angry, and by bedtime you're exhausted.
Managing sundowning in dementia is one of the hardest parts of caring for someone at home, because it arrives on a schedule, day after day. There's no cure, but there's a great deal a family can do to soften it, and most of it happens before four o'clock.
What sundowning is
Sundowning isn't a disease of its own. It's a pattern: confusion, anxiety, restlessness or agitation that begins or gets worse in the late afternoon and evening in someone with dementia, most often Alzheimer's. The National Institute on Aging describes it as restlessness, agitation, irritability and confusion that happen as daylight begins to fade. It can continue into the night and make it hard to sleep.
It's common. Around 20% of people diagnosed with Alzheimer's disease experience sundowning at some point, according to Cleveland Clinic, though research estimates vary widely depending on how it's measured.
Signs of sundowning
Watch for these in the late afternoon and evening:
- Restlessness, pacing or trying to leave the house
- Anxiety, fear or tearfulness without a clear cause
- Not recognizing a familiar room, or insisting on "going home"
- Asking the same question over and over
- Suspicion, accusations of stealing, or seeing things that aren't there
- Refusing help with dinner, bathing or getting ready for bed
- Shouting, crying, or striking out
What stage of dementia sundowning appears in
According to the Alzheimer's Society, sundowning can happen at any stage of dementia but is more common in the middle and later stages. Cleveland Clinic adds that it usually continues for as long as its triggers do, which is why the changes below matter. Our guide to the seven stages of dementia explains what else to expect at each stage.
Why it happens
Nobody knows exactly, and it's probably several things at once. Dementia damages the part of the brain that runs the body's internal clock, which governs sleeping and waking. By late afternoon, a person with dementia has spent all day working hard to make sense of the world, and they're worn out. Fading light makes familiar rooms look strange and casts shadows that can frighten.
Many everyday triggers make it worse:
- Hunger, thirst or a full bladder
- Pain they can't describe, from arthritis, constipation or a sore tooth
- Infections, especially urinary tract infections
- Too much caffeine, or too little sleep the night before
- A noisy, busy house at dinnertime
- Medication side effects
- A tired, rushed caregiver, whose stress the person can sense
What helps in the late afternoon and evening
The National Institute on Aging, the Alzheimer's Association and dementia specialists agree on where to start: changes to the day and the home, before medication. These are the ones families find most useful.
Put the hard things in the morning
Schedule baths, doctor's appointments, errands and visits from grandchildren for the morning, when your parent is at their best. Let the afternoon wind down into quiet, familiar activities. A short rest after lunch can help, but keep naps brief so nighttime sleep doesn't suffer.
Get daylight early, and light the house before dark
Bright light in the morning helps set the body's clock: breakfast by a sunny window, a short walk outside, blinds opened as soon as they're up. In the late afternoon, turn on lamps before rooms start to dim, and close curtains as the sun goes down so the change from day to night is gradual. Warm, even lighting with few shadows is calmer than one harsh overhead light.
Quiet the late afternoon
Cut caffeine after lunch and keep sugar and alcohol low later in the day. Turn off the news, keep the household calmer around dinnertime, and avoid having several people talking at once. A calm hour starting around four can change the whole evening.
Check the simple things first
When agitation starts, run through the basics before assuming it's the dementia. Are they hungry, thirsty, cold, hot, in pain, or in need of the bathroom? Is a waistband too tight or a tag scratching? People with dementia often can't say what's wrong, so discomfort comes out as distress. Fixing the small thing often settles the big one.
Calm the feeling instead of correcting the facts
When your father insists at six o'clock that he has to pick the kids up from school, and his kids are in their fifties, arguing rarely helps. Respond to the feeling: "You're worried about the children. They're safe. Let's have some tea first." A calm voice, a warm drink, a favorite song, a photo album, or a simple task like folding towels works better than an explanation. Our guide to talking with someone who has dementia has more examples.
Keep one evening ritual
The same small routine at the same time each evening, such as a warm wash, the same record, a cup of decaf and the same TV show, gives the brain something to hold on to. The predictability matters more than the activity.
Protect nighttime sleep
A regular bedtime, a dark and comfortable bedroom, night lights in the hallway and bathroom, and plenty of daytime activity all help. If your parent wanders at night, door alarms and a clear, well-lit path to the bathroom keep them safer. Our guide to sleep problems in older adults covers more.
Medication and sundowning
No medication is approved specifically for sundowning. Antipsychotic drugs, sometimes prescribed for agitation, carry an FDA boxed warning about an increased risk of death in older adults with dementia, and sedatives and over-the-counter sleep aids containing diphenhydramine can make confusion worse and cause falls. That's why doctors try the approaches above first. A doctor may still treat something underneath the sundowning, such as pain, depression, poor sleep or an infection. Talk to the doctor before trying any medicine or supplement.
When to call the doctor
Call the doctor if evening confusion appears for the first time, gets suddenly much worse, or comes with fever, pain, new incontinence, a fall, unusual drowsiness or a new medication. Sudden changes are often caused by a urinary tract infection, constipation, dehydration or a medication side effect, and they can signal delirium, which needs prompt care. Our guides to delirium and dementia and to urinary tract infections in older adults explain the warning signs. Call 911 if anyone is in danger.
The toll on the caregiver
Sundowning arrives at the hour when family caregivers are most worn out, after a full day of work or care, with dinner still to make. Night after night of it, especially when it spills into broken sleep, wears down even the most devoted son, daughter or spouse. Feeling exhausted, short-tempered or resentful doesn't mean you're failing. It means the evenings have become more than one person can carry alone. Our guide to caregiver burnout covers the warning signs.
Bringing in help for the evenings
A trained caregiver can take the hardest hours: late afternoons through bedtime, overnight so the family can sleep, or around the clock. Our caregivers are trained in Alzheimer's and dementia care, including calm redirection during agitation and sundowning, and a registered nurse oversees every care plan, because telling ordinary sundowning apart from an infection can take a clinician's eye. Care can start with a few evening shifts or overnight care and grow to live-in care in New Jersey or 24-hour care.
"I cannot thank Always Responsive Home Care enough for the outstanding care they provided to my father during his rapid decline due to dementia. From the very first call, their team demonstrated exactly what their name promises. Whether it was answering questions or offering emotional support during a very difficult time, they were always there for us. The caregivers were not only professional but also incredibly compassionate. Their patience and dedication made a world of difference, and we felt at peace knowing he was receiving the best possible care.If you’re looking for reliable, compassionate, and truly responsive care, I highly recommend Always Responsive Home Care."
John B., Middlesex County, NJ
If the evenings have started to take everything you have, talk to us. We'll listen first, and then help you plan care around the hours that are hardest.
Common questions
Click or tap a question to see the answer.
What is sundowning in dementia?
Sundowning, also called sundown syndrome or late-day confusion, is a pattern of increased confusion, anxiety, restlessness, agitation and sometimes anger or suspicion that starts or worsens in the late afternoon and evening in people with dementia. It can include pacing, wandering, repeated questions, insisting on going home while at home, and resisting care. It's a set of behaviors, not a separate disease.
What stage of dementia does sundowning happen in?
Sundowning can happen at any stage of dementia, but it's most common in the middle and later stages of Alzheimer's disease and related dementias. Around 20% of people diagnosed with Alzheimer's experience sundowning at some point, according to Cleveland Clinic, and it tends to continue for as long as its triggers do.
What causes sundowning?
No single cause has been proven. Researchers believe dementia disrupts the brain's internal clock, which governs the sleep-wake cycle, and that fatigue builds up over a day of working hard to make sense of things. Fading light and shadows, a busy or noisy household, hunger, thirst, pain, a full bladder, infections such as urinary tract infections, too much caffeine, poor sleep and medication side effects can all trigger or worsen it.
How do you calm someone who is sundowning?
Stay calm and speak slowly, acknowledge the feeling rather than arguing with the facts, and check for simple needs like hunger, thirst, the bathroom, pain or being too hot or cold. Turn lights on, reduce noise and activity, and offer something soothing and familiar, such as a snack, a warm drink, music they love, a photo album or a simple task for their hands. Moving to a quieter room or taking a short walk can help. Keep the person safe, and give them space if they become aggressive.
Is there medication for sundowning?
There is no medication approved specifically for sundowning, and experts recommend non-drug approaches first. Antipsychotic drugs carry an FDA boxed warning about an increased risk of death in older adults with dementia, and sedatives and over-the-counter sleep aids containing diphenhydramine can worsen confusion and cause falls. A doctor may treat an underlying problem such as pain, depression, poor sleep or an infection, and should be consulted before trying any medicine or supplement.
When should you call a doctor about sundowning?
Call the doctor if evening confusion appears for the first time, becomes suddenly much worse, or comes with fever, pain, new incontinence, falls, drowsiness or a change in medication. Sudden changes are often caused by a urinary tract infection, constipation, dehydration, pain or a medication side effect, and can signal delirium, which needs prompt medical care. Call 911 if the person is a danger to themselves or others.
