Sundowning: Why It Happens and How Caregivers Can Help
It starts around the same time every day. The sun begins to dip below the horizon; the light in the room shifts—and your loved one, who seemed perfectly calm just an hour ago, becomes restless, confused, or even agitated. They may pace the hallway, accuse family members of things that never happened, or insist they need to “go home” even though they are home. If this sounds familiar, you’re not alone—and you’re not imagining it. What you’re witnessing has a name: sundowning. It’s one of the most common and emotionally exhausting challenges that families and caregivers face when caring for someone with Alzheimer’s disease or dementia. Understanding what sundowning is, why it happens, and—most importantly—what you can do about it can make an enormous difference for everyone involved. What Is Sundowning? Sundowning—also called “late-day confusion”—refers to a pattern of increased confusion, anxiety, agitation, or unusual behavior that typically appears in the late afternoon or evening hours in people with dementia or Alzheimer’s disease. It isn’t a disease in itself, but rather a cluster of symptoms that tend to worsen as the day winds down. For some people, these episodes are mild—a bit more forgetfulness or emotional sensitivity. For others, sundowning can be severe and deeply distressing, involving hallucinations, paranoia, or even attempts to leave the home. Common signs of sundowning include: Why Does Sundowning Happen? Researchers don’t yet have one definitive answer, but there are several well-supported theories. Dementia causes real, physical changes in the brain—including in the areas that regulate sleep, mood, and our internal body clock. Here’s what we currently understand: 1. Disruption of the Internal Body Clock (Circadian Rhythm) The brain has a built-in clock that regulates when we feel alert and when we feel sleepy. In people with Alzheimer’s, this clock is often damaged, leading to confusion about the time of day. As natural light fades in the evening, the brain may lose important cues that help it stay oriented—triggering anxiety and disorientation. 2. Physical Fatigue and Mental Exhaustion Living with dementia takes enormous mental effort. By the end of the day, the brain has been working hard to compensate for cognitive gaps—and it simply runs out of steam. Think of sundowning as a kind of “cognitive fuel tank” running dry by late afternoon. 3. Reduced Lighting and Visual Cues Dim lighting makes it harder for someone with dementia to interpret their environment accurately. Shadows on a wall can look like people. A coat hanging on a door can appear threatening. Adequate, consistent lighting throughout the evening can dramatically reduce these misperceptions. 4. Unmet Needs and Discomfort Sometimes sundowning is triggered by something physical: hunger, pain, needing to use the bathroom, or feeling too hot or cold. People with advanced dementia often cannot articulate what they need, and agitation becomes their way of communicating discomfort. 5. Medication Side Effects Certain medications can cause or worsen confusion, especially if they wear off in the afternoon. It’s worth discussing with your loved one’s physician whether timing adjustments might help. Practical Strategies Caregivers Can Use The good news is that sundowning can often be managed—and sometimes significantly reduced—with the right strategies. No single approach works for everyone, so think of this as a toolbox. Try different combinations and pay attention to what works for your loved one. Keep a Consistent Daily Routine Predictability is deeply calming for people with dementia. Try to schedule meals, activities, and bedtime at the same time each day. A structured routine reduces the uncertainty that the brain struggles to process. Even small rituals—a cup of herbal tea at 4 PM, a favorite TV show in the early evening—can act as anchors. Brighten the Home Before Dusk Start turning on the home’s lights at least 1 to 2 hours before sunset. Bright, warm lighting helps maintain orientation and reduces the shadow distortions that can trigger fear or confusion. Consider investing in full-spectrum light bulbs, which more closely mimic natural daylight. Limit Napping—Especially in the Late Afternoon Long or late-afternoon naps can disrupt nighttime sleep and worsen sundowning. If your loved one needs rest, encourage shorter naps earlier in the day. Keeping them gently active in the afternoon—a short walk, light stretching, or a simple activity—can help regulate their energy levels. Use Calming Activities During the “Danger Zone” Hours The late afternoon—roughly 3 PM to 7 PM for most people—is when the risk of sundowning is highest. Plan gentle, enjoyable activities during this window to keep your loved one engaged and calm. Good options include: Respond to Emotions, Not Just Behaviors When your loved one is convinced they need to “get home before dinner” or insists that someone has stolen their belongings, arguing or correcting them rarely helps—and usually makes things worse. Instead, try to acknowledge the feeling behind the statement. “You’re missing home? “Let’s sit together, and I’ll make you something warm” is far more effective than “You ARE home—you’ve lived here for 10 years.” This technique—called validation therapy—meets the person where they are emotionally, rather than where you know them to be factually. Watch for Physical Triggers Before assuming sundowning is purely neurological, rule out physical discomfort. Ask yourself: When did they last eat or drink? Do they need to use the bathroom? Are they in pain or sitting in an uncomfortable position? Addressing these basic needs first can sometimes prevent an episode from escalating. Reduce Stimulation in the Evening Loud TV programs, busy household activity, or too many people visiting in the evening can overwhelm a dementia patient’s already-taxed nervous system. Try to create a quieter, calmer environment as bedtime approaches. Lower the volume, reduce foot traffic in the home, and use softer, warmer lighting. A Word to Caregivers: You Matter Too Dealing with sundowning night after night is exhausting. The emotional weight of watching someone you love become frightened or angry — and not being able to fully “fix” it — can lead to caregiver burnout faster than almost anything else in dementia care. If you find yourself dreading the late