Mom Wanders

Mom Wanders The late-day window

The late-day window

What is sundowning and what do I do about it?

The late-day window in plain words: what tends to set it off, and the dusk routine families try first, arranged by the clock.

Published 10 September 2026 by the Mom Wanders desk. Each number and named program is cited in the sentence that uses it. Nothing here is medical advice.

If you typed "what is sundowning and what do I do about it" at eleven at night, here is the plain answer. The National Institute on Aging uses the word for restlessness, agitation, irritability, and confusion as daylight begins to fade. You probably noticed it before anyone named it: the light goes flat in the kitchen, she paces, and by five she is looking at the front door the way she used to look at the clock. What to do first is a dusk routine of lamps, something in her hands, and a quieter house, laid out below.

The window, in plain words

The National Institute on Aging puts it in one sentence: when restlessness, agitation, irritability, and confusion happen as daylight begins to fade, it is known as sundowning. The Alzheimer's Association describes it as increased confusion that people living with Alzheimer's and dementia may experience from dusk through night, and lists what it can look like: difficulty sleeping, anxiety, agitation, hallucinations, pacing, and disorientation.

Two things are worth holding onto. First, it is a pattern, not a verdict. It is a name families and clinicians use for a stretch of the day that goes badly, and it does not tell you how tomorrow will go. Second, it is not something your mother is doing to you. She is not being difficult. The part of her that keeps track of where she is and what hour it is has a hard time in the late afternoon, and the door is where the feeling of needing to be somewhere else goes.

On this site the late-day window is the orange stretch on the bar at the top of every page, roughly four in the afternoon to eight at night. Your mother's window may open earlier or run later. The point of marking it is so you can plan for it instead of being surprised by it every single day.

What tends to set it off?

Nobody can tell you from a web page why your mother's evenings are hard, and we will not try. What the two main sources agree on is a short list of things that make the window worse. The Alzheimer's Association names mental and physical exhaustion from a full day of activities, a new or confusing environment, a mixed-up internal body clock, low lighting that increases shadows, noticing stress or frustration in the people around her, disorientation from dreaming, and the simple fact that older adults often need less sleep. The NIA adds the one you can act on fastest: being overly tired can increase late-afternoon and early-evening restlessness.

Read that list again as a daughter, not as a student. Exhaustion: was the day too full? A confusing environment: did you rearrange the living room, or is she at your house instead of hers? Shadows: are the lamps on before the light changes? Your stress: she reads your face better than she reads a calendar. None of that is your fault. All of it is something you can adjust.

Why does she head for the door at that hour?

Because the feeling of needing to be somewhere is real even when the somewhere is not. The Alzheimer's Association's first piece of advice on wandering is to identify the time of day the person is most likely to wander, and for a great many families that time is the late-day window. The same page says to involve the person in daily activities such as folding laundry or preparing dinner, to reassure her if she feels lost, abandoned or disoriented, and to make sure basic needs are met: toileting, nutrition and hydration. A person who is hungry, needs the bathroom, and cannot say so will often walk instead.

So when she stands up at a quarter past five and says she has to go, the question to ask yourself is not "how do I stop her" but "what does she need right now that walking might be standing in for." Sometimes it is the bathroom. Sometimes it is dinner. Sometimes it is you, sitting down next to her. The doorway itself, and what to say there, has its own page.

The dusk routine families try first

This is the routine built from the two public checklists, arranged by the clock so you can see where it fits in a real day. Try it for a week before you judge it. Keep what helps and drop what does not.

  1. morning
    Put the hard things here. The Alzheimer's Association suggests scheduling doctor appointments, trips and bathing in the morning, when there is the most of her to work with.
  2. midday
    Get her into daylight. Both sources say the same thing: arrange a time to go outside or sit by a window to get sunlight each day, and be physically active without planning too many activities.
  3. 2 pm
    Last coffee. The NIA says to avoid alcoholic drinks and beverages with caffeine, such as coffee or cola, late in the day, and to discourage long naps and dozing late in the day. A short rest after lunch is different from a two-hour sleep at four.
  4. 3:30 pm
    Lamps on before the light changes, not after. The Alzheimer's Association says to keep the home well lit in the evening to help reduce the person's confusion. Close the blinds on the side of the house where the sunset throws long shadows.
  5. 4:30 pm
    A task with her hands. Folding towels, snapping beans, sorting the mail, setting the table. It gives the restlessness somewhere to go and it gives her a role. This is the daily activities advice from the wandering page, applied to the window.
  6. 5:30 pm
    Dinner, then quiet. Turn the television down or off, lower your own voice, and keep visitors for the morning. If she heads for the door, do not argue with the destination. Offer a coat and a cup of tea first.
  7. 8 pm
    A short, same-every-night wind-down. The same chair, the same music, the same words. Coats, shoes and keys out of sight before you go up, which is the NIA's advice for a house where someone has wandered.

Notice what is not on that list: no gadget, no medicine, no trick. The routine is mostly light, timing and company. It is not a cure and nobody should sell it to you as one. It is the first thing to try because it costs nothing and because it is what the two organizations that study this most closely put at the top of their own pages.

What to do tonight

If it is already late afternoon as you read this, do three things. Turn on every lamp in the rooms she uses. Put something in her hands, even a dish towel. Sit down where she can see you and let your shoulders drop, because she will borrow whatever your body is telling her. Then, when the window closes and she is asleep, come back and read the rest.

When it happens at your house instead of hers

Many daughters in west county are managing this across two houses, a mother in Ballwin and a life in Chesterfield, and the window is often worse in the house she does not know. That is the new or confusing environment item from the list above, and a reason to try the routine in her own kitchen first, with her own lamps and chair. If the evenings are the hour you cannot cover, the night-shift page lays out the answers.

When to ask the care team or the doctor

A pattern that shows up at the same hour every day is one thing. A sudden change is another. The NIA's page lists causes of agitation that a doctor can look for, including pain, depression, stress, too little rest or sleep, constipation, and certain medications or interactions between two medications, and says a doctor can give the person a medical exam to look for physical problems. The Alzheimer's Association says to consult her health care providers if the strategies above do not help. Nothing on this page replaces that conversation. Bring the clock with you: write down what time it starts, what she says, and what helped, for a week, and hand the doctor the page.

Keep reading

All eight articles.

Someone awake in the house at dusk and overnight, Ballwin to St. LouisCall New Plan Care (314) 405-0887