Gentle Ways to Ease Sundowning

Sundowning is a common experience where a person with dementia becomes more confused, anxious, or agitated as the day fades into evening. It happens because the brain's internal clock is disrupted, making it hard to distinguish day from night, and because the brain is exhausted from working so hard all day. The good news is that there are many concrete, gentle strategies you can use to prevent and calm these episodes—starting with light, routine, and your own calm presence. You are not alone, and small changes can make a big difference.

Key points

• Sundowning is caused by brain changes that disrupt the internal clock and by cognitive fatigue from a long day—it is not willful behavior.
• The single most effective tool is warm, soft lighting starting in the late afternoon. Close blinds to reduce shadows.
• A consistent daily routine for meals, activities, and bedtime provides predictability that calms the brain.
• Check for unmet needs (hunger, thirst, pain, bathroom) before the sundowning window—these are common triggers.
• Your calm presence is your most powerful tool. Take care of yourself so you can be that anchor.
• Keep a journal to track patterns—it helps you identify triggers and gives your doctor useful information.

What Is Sundowning and Why Does It Happen?

Sundowning is not a disease itself, but a cluster of symptoms that often appear in the late afternoon and early evening in people with dementia. These can include confusion, anxiety, restlessness, pacing, repetitive questions, agitation, and even hallucinations or delusions. It is most common in the middle to later stages of dementia, though it can appear earlier. The term comes from the timing—as the sun goes down, behaviors intensify.

The root cause is tied to changes in the brain that affect the body’s internal clock, or circadian rhythm. The brain loses its ability to process light cues that tell it whether it is day or night. As the day goes on, the brain also becomes fatigued from the constant effort of making sense of the world. This is sometimes called "cognitive fatigue"—like a computer that has been running too many programs and starts to glitch. By late afternoon, the brain has hit its limit, and confusion or agitation breaks through.

Environmental factors can make sundowning worse. Poor lighting creates shadows that look like people or objects, triggering fear. Loud noises, a busy household, or even the TV news can overwhelm an already tired brain. Unmet needs—like hunger, thirst, pain from arthritis, or needing to use the bathroom—can also set off an episode. Understanding this helps you see sundowning not as a personal failing or willful behavior, but as a biological and environmental response you can work with.

The Role of Sensory Overload and Fatigue

Think of the dementia-affected brain as having a limited daily energy budget. In the morning, after rest, the person is often at their best. But as the day progresses, every interaction, every sound, every decision drains that budget. By late afternoon, the brain is exhausted and can no longer filter out irrelevant information or regulate emotions. This is why a calm, predictable environment is so important.

Sensory overload builds throughout the day. A visit from family, a doctor’s appointment, a noisy TV, or even a cluttered room can all add to the load. The person may not be able to tell you they are overwhelmed—instead, they may pace, yell, or try to leave. This is their brain’s way of saying "too much." Your job is to reduce the load, not add to it.

Your own emotions matter deeply. People with dementia lose the ability to reason, but they retain the ability to sense your feelings. If you are frustrated, anxious, or angry, they will pick up on that and it will amplify their own distress. Staying calm is not just good advice—it is a practical tool. Your calm presence becomes an anchor for their confused world.

General caregiving information, not medical advice. Check medications and major care changes with your clinician.

Why is caregiver self-care important for managing sundowning?

Taking care of yourself keeps you calm and patient, which is your most powerful tool to anchor your loved one during sundowning. When you are rested, you can respond gently instead of reacting with frustration, which often escalates agitation.

How can I manage or prevent sundown syndrome?

Start by turning on warm, soft lighting in the late afternoon and closing blinds to cut shadows, which confuses the brain. Stick to a consistent daily routine for meals and rest, and check their comfort (hunger, thirst, pain, bathroom) before evening hits.

What can caregivers do to manage sundowning behaviors?

Use your calm presence and soft voice to redirect them to a comforting activity, like offering a warm drink or looking at a familiar photo album. If they are agitated, reduce noise and let them pace safely—do not try to argue or reason, as that only increases confusion.

Discuss with your clinician

Ask your doctor: Could my loved one's sundowning be worsened by a medication they are currently taking? Some medications can have side effects that increase confusion or agitation.

Ask your doctor: Is there an underlying medical issue—like a urinary tract infection, dehydration, or pain from arthritis—that could be triggering these episodes? Treating the underlying cause often resolves the sundowning.

Ask your doctor: If non-drug approaches are not enough, what are the risks and benefits of a low-dose medication? Always start at the smallest possible dose and monitor closely for side effects like increased confusion, falls, or sedation.

Ask your doctor: Should we consider a light therapy box? Light therapy in the morning can help reset the circadian rhythm and reduce sundowning. Your doctor can advise on the right type and timing.

Ask your doctor: Are there any supplements (like melatonin) that might help with sleep and circadian rhythm? Do not start any supplement without medical guidance, as they can interact with other medications.

Related guides

• Managing pre-sleep agitation, hollering, and swearing in dementia
• Designing a Dementia-Friendly Home and Memory Care Environment
• Light, Circadian Rhythm, and Sleep-Wake Disruption in Dementia: A Guide for Caregivers
• Non-drug first: deciding when medication is needed for dementia behaviors
• Sensory communication strategies for dementia
• caregiver stress and the caregiver's own dementia risk
• Light Therapy for Dementia Sundowning: A Practical Guide for Caregivers
• Building a medication routine for a person with dementia
• Responding to Delusions and Hallucinations in Lewy Body Dementia
• What Is Sundowning and Why Does It Happen? A Complete Guide for Caregivers
• Preventing Sundowning Before It Starts: A Proactive Daily Guide for Caregivers
• Sundowning: What Triggers It and How to Calm the Late-Day Storm
• Melatonin for Sundowning: What Family Caregivers Need to Know
• When the Sun Goes Down: A Practical Guide to Sundowning and Exit-Seeking
• Personalized Sundowning Management When Standard Methods Stop Working in Late-Stage Dementia
• Using Morning Light to Manage Sundowning
• How to Reduce Sensory Overload and Prevent Sundowning: A Complete Guide for Caregivers
• Is Sundowning a Sign Dementia Is Worsening?
• Is It Sundowning or a Medical Emergency? How to Tell the Difference and What to Do
• Why Sundowning Worsens as Light Fades and What You Can Do About It
• Why Dementia Disrupts Sleep and Causes Evening Confusion (Sundowning) — and How to Respond

Sources

• NICE
• PubMed
• PMC
• Alzheimer's Association
• Mayo Clinic
• betterhealthwhileaging.net
• Dementia Help Hub
• Dementia Success Path
• Caregiver Relief
• Dementia Care Hub