Understanding Sundowning: What It Is, Why It Happens, and How Activities Can Help

It happens like clockwork.

Your loved one was calm all morning. Maybe even engaged — coloring, chatting, eating lunch without difficulty. But as the afternoon light shifts and evening approaches, something changes. Agitation. Confusion. Restlessness. Anxiety. Sometimes anger. Sometimes tears.

If this pattern is familiar, your loved one may be experiencing sundowning — and you are not alone.

What is sundowning?

Sundowning — sometimes called "late-day confusion" — is a pattern of increased behavioral and psychological symptoms that occurs in the late afternoon and evening hours in people with Alzheimer's and other forms of dementia.

Symptoms can include increased confusion and disorientation, agitation and irritability, anxiety and fearfulness, pacing or wandering, difficulty settling down for the evening, resistance to caregiving, and in some cases, aggression or emotional outbursts.

Sundowning is not a separate diagnosis — it's a symptom pattern associated with dementia. It's estimated to affect a significant portion of people with Alzheimer's disease, though the exact numbers vary across studies.

Why it happens.

The exact causes of sundowning are still being studied, but several factors likely contribute:

Circadian rhythm disruption. Dementia damages the brain's internal clock — the suprachiasmatic nucleus — which regulates sleep-wake cycles. As this system degrades, the body loses its ability to distinguish between day and night, leading to increased confusion during transitional light periods.

Fatigue accumulation. After a full day of navigating a confusing world, cognitive reserves are depleted. The brain simply runs out of capacity to cope, and symptoms that were manageable in the morning become overwhelming by afternoon.

Environmental cues. Fading light creates shadows and visual distortions that can be frightening or disorienting for someone with impaired perception. The shift from daytime activity to evening quiet can also feel unsettling.

Unmet needs. Hunger, thirst, pain, overstimulation, or the need for toileting can all intensify in the afternoon and manifest as behavioral symptoms when a person lacks the language to express them.

What helps.

While sundowning can't be eliminated entirely, several strategies can reduce its frequency and severity:

Structure the day strategically. Schedule the most stimulating and engaging activities for the morning and early afternoon, when cognitive reserves are highest. Use later afternoon for calmer, gentler engagement — simple coloring, soft music, or quiet Stories2Connect sessions.

Maintain consistent routines. Predictability reduces anxiety. A consistent daily schedule — meals, activities, rest periods — gives the brain fewer surprises to process.

Optimize the environment. As afternoon arrives, increase indoor lighting to compensate for fading natural light. Reduce noise and visual clutter. Create a calm, well-lit space that minimizes shadows and sensory confusion.

Use activities as calming tools. Gentle, repetitive activities like coloring can serve as grounding tools during the vulnerable late-afternoon window. The rhythmic motion, focused attention, and low cognitive demand can redirect agitation into calm engagement. Keep materials ready and accessible so you can offer an activity at the first signs of restlessness.

Address physical needs proactively. Offer a snack and water in the mid-afternoon before hunger or dehydration can contribute to symptoms. Check for signs of pain or discomfort.

What caregivers need to know.

Sundowning is not your loved one's fault. It's not a behavioral problem. It's a neurological symptom of the disease. You cannot prevent it entirely through willpower, patience, or perfect caregiving.

What you can do is prepare for it, reduce its triggers, and have tools ready — including gentle activities — to help your loved one move through it with less distress.

And you can be kind to yourself on the days when nothing works. Those days will happen. They don't mean you've failed.

👉 Explore gentle, calming activities designed for late-afternoon engagement.