Sundowning is a pattern of confusion, agitation, or restlessness that happens in the late afternoon or evening in people with dementia or Alzheimer's. It usually eases overnight but tends to return the next day around the same time.

What causes sundowning?

Doctors believe sundowning happens because dementia disrupts the brain's internal clock. Fatigue builds up through the day, light levels drop, and the brain struggles to make sense of its surroundings — all of which can trigger restlessness and confusion.

How can caregivers manage sundowning?

Keep a consistent daily routine, increase light exposure in the morning, reduce caffeine and stimulating activities in the afternoon, and create a calm, familiar environment as evening approaches. Professional in-home caregivers can also help manage evenings reliably.

What Is Sundowning? A Houston Caregiver’s Guide | CareWorks Houston

Caregiver Guide

What Is Sundowning? A Houston Caregiver’s Guide

🕑 5 min read · 📍 Localized for Houston

If your loved one gets confused, anxious, or restless every evening — right around sunset — you are not imagining it. There is a name for it: sundowning. And you are not alone in dealing with it.

Sundowning is one of the most common and exhausting challenges for caregivers of people with dementia or Alzheimer’s disease. The good news is that once you understand what’s happening in the brain, you can take real steps to make evenings calmer — for your loved one and for yourself.

What Is Sundowning?

Sundowning — sometimes called sundown syndrome — is a pattern of behavioral changes that tends to show up in the late afternoon or early evening. It usually involves some combination of confusion, agitation, restlessness, and even suspicion or fear. These symptoms often ease up overnight, but they tend to come back the next day around the same time.

It is not a disease on its own. It is a symptom — one that shows up most often in people who have Alzheimer’s disease, other forms of dementia, or certain other conditions that affect the brain.

Quick fact: Sundowning affects roughly 20% of people with Alzheimer’s disease. Many caregivers say it is one of the hardest parts of caring for a loved one at home.

What Does It Look Like?

Sundowning looks different from person to person, but the most common signs include:

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Confusion

Forgetting where they are or not recognizing familiar faces — even yours.

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Agitation

Becoming irritable, upset, or argumentative with little or no apparent reason.

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Restlessness

Pacing, wanting to “go home,” or trying to leave the house.

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Fear or Suspicion

Believing someone is in the house, or accusing caregivers of things that didn’t happen.

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Sleep Trouble

Refusing to go to bed, or being awake and disoriented during the night.

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Mood Swings

Sudden emotional shifts — from calm to tearful or even angry very quickly.

Why Does Sundowning Happen?

Doctors and researchers believe sundowning happens because dementia disrupts the brain’s internal clock — the system that tells us when to be awake and when to rest. As the disease progresses, this clock gets harder to regulate.

Several things can make sundowning worse:

→Fatigue — the brain tires out after a full day of processing its surroundings
→Low light — dimming light makes it harder for the brain to stay oriented
→Hunger or thirst — basic physical needs that go unnoticed can spike agitation
→Change in routine — unfamiliar schedules or visitors can be unsettling
→Overstimulation — a loud TV, too many people, or a busy afternoon
→Medication timing — some medications wear off in the late afternoon

📍 In Houston, the long, bright summer days can actually help by keeping the home light and well-lit longer. But as the sun sets earlier in winter, caregivers often notice sundowning symptoms getting worse — so adjusting indoor lighting becomes especially important during those months.

What Can You Do? 8 Practical Tips

There is no single cure for sundowning, but there is a lot you can do to reduce how often it happens and how intense it gets.

1. Keep the day predictable

A consistent daily routine is one of the most powerful tools you have. When meals, activities, and bedtime happen at the same time each day, the brain has fewer surprises to process by evening.

2. Brighten the home during the day

Open blinds and curtains in the morning to let in natural light. If your loved one tends to stay in dim spaces, consider a light therapy lamp — used in the morning, it can help reset their internal clock over time.

3. Plan activities for the morning

Save anything stimulating — outings, visits, exercise, therapy appointments — for the first half of the day. Afternoons and evenings should be calmer and quieter.

4. Watch what they eat and drink

Avoid caffeine after noon — yes, this includes decaf coffee and some teas that still contain caffeine. A light, satisfying snack in the late afternoon can help prevent hunger-related agitation as evening approaches.

5. Turn on lights before sunset

Do not wait for the room to get dark. Turn on warm, soft lights in the late afternoon — before the shadows grow. Bright, harsh lighting can be agitating, so stick to warm bulbs.

6. Use calming sounds or music

Familiar music from your loved one’s younger years can be remarkably grounding. Keep the TV off during the early evening if it tends to overstimulate. Nature sounds or soft instrumental music are good alternatives.

7. Stay calm yourself

This is harder than it sounds, but your mood is contagious. When you speak slowly, use a gentle tone, and avoid arguing, your loved one’s nervous system tends to settle more quickly. You do not have to correct every confused thought — sometimes just being present and reassuring is enough.

8. Talk to their doctor

If sundowning is happening every day and getting worse, bring it up with their physician. There may be treatable causes — a urinary tract infection, a medication side effect, or a sleep disorder — that are making it worse. In some cases, medication can help.

⚠️ When to call a doctor right away: If your loved one becomes a danger to themselves or others, is severely disoriented for hours at a time, or their symptoms appear suddenly and are much worse than usual, contact their doctor promptly. A sudden change in confusion can sometimes signal a medical issue like an infection or medication problem.

A Note for Caregivers: You Matter Too

Sundowning is exhausting. When the hardest time of day comes just as your own energy is running out, it can feel overwhelming. Caregiver burnout is real, and it is not a sign of weakness — it is a sign that you are carrying a heavy load.

If you are managing evenings alone, consider asking for help. Whether that is a family member who can take over for a few nights a week, or a professional in-home caregiver who specializes in dementia care, you should not have to do this by yourself.

Frequently Asked Questions

Is sundowning the same as dementia getting worse?

Not necessarily. Sundowning is a symptom that can occur at different stages of dementia. It does not always mean the disease is progressing rapidly. However, if sundowning suddenly gets much worse, it is worth talking to a doctor to rule out a new health issue.

Can sundowning happen in people who do not have dementia?

It is less common, but yes. Sundowning-like symptoms can appear in older adults during a hospital stay (this is often called ICU delirium), or in people with certain infections, medications, or sleep disorders. Dementia is the most common cause, but not the only one.

Will sundowning get better over time?

For some people, sundowning does improve — particularly as the underlying cause is managed and a consistent routine is established. For others, especially those in later stages of dementia, it may continue or shift in pattern. Adjustments to the routine and environment can still make a meaningful difference in how intense episodes are.

How long do sundowning episodes last?

Episodes vary. Some last an hour or two, others can stretch into the late night. The timing and duration depend on the individual, the stage of their condition, and what is happening in their environment that day. Consistent routines tend to shorten and reduce episodes over time.

Can professional caregivers help with sundowning?

Yes. Trained in-home caregivers who have experience with dementia can be especially valuable during the evening hours. They are familiar with calming techniques, can maintain a consistent routine, and give the primary family caregiver time to rest — which is just as important for your loved one’s well-being as it is for yours.

You Do Not Have to Handle Evenings Alone

CareWorks Houston provides compassionate, dementia-trained in-home caregivers across Houston and the surrounding areas. We can help — day or night.

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This article is written for informational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare provider with questions about your loved one’s care.