Sundowning: Why It Happens and How to Manage It

If your loved one with dementia becomes confused, anxious, or agitated as the afternoon turns to evening, you are witnessing a pattern known as sundowning. It is one of the most exhausting challenges for family caregivers, because it arrives at the exact time of day when you are most tired. Understanding what drives it can help you respond with calm instead of frustration.

What is sundowning?

Sundowning refers to a state of confusion, restlessness, or agitation that tends to occur in the late afternoon or early evening. It is common in people with Alzheimer's and other forms of dementia. The person may pace, repeat questions, become suspicious or fearful, or try to leave the home. It is not a deliberate behavior. It is a symptom of a brain struggling to process information as fatigue and sensory changes accumulate.

Why it happens

Researchers believe several factors combine to cause sundowning. No single cause explains every case, which is why a combination of strategies often works best.

• Circadian rhythm disruption: Dementia can disturb the body's internal clock, confusing day and night.
• Fatigue: Mental and physical exhaustion from the day reduces the brain's ability to cope.
• Sensory overload and low light: Dimming light and increasing shadows can be misinterpreted and feel threatening.
• Unmet physical needs: Hunger, thirst, pain, or the need to use the bathroom may go unexpressed and emerge as agitation.
• Medication effects: Some medications can cause drowsiness, confusion, or agitation that worsens in the evening.

Strategies to manage the evenings

A predictable, calming approach to the later part of the day can reduce the severity and frequency of sundowning episodes. The goal is to reduce stressors and increase cues of safety and routine.

• Keep a consistent daily routine so the body and brain know what to expect.
• Increase exposure to bright, natural light during the day, especially in the morning, to reinforce the day-night cycle.
• Serve an early, lighter dinner to avoid evening digestive discomfort.
• Limit caffeine and sugar in the afternoon and evening.
• Create a calm evening environment: soft music, familiar activities, gentle lighting without harsh shadows.
• Avoid confrontational conversations, complex decisions, or visitors late in the day.

In the moment: how to respond

When an episode begins, your reaction sets the tone. Respond with calm reassurance rather than correction. Lower your voice, slow your movements, and reduce stimulation. Offer a familiar, comforting activity like folding laundry, looking at a photo album, or a warm drink. If the person is trying to leave, do not physically block the door. Walk with them, redirect gently, and look for the unmet need behind the behavior.

• Check for pain, hunger, thirst, or the need to use the bathroom.
• Look for overstimulation: turn off the television, reduce noise, dim harsh lights.
• Validate the feeling rather than arguing the facts. If they believe it is time to go home, agree and redirect.
• Use familiar music, touch, or a favorite object to anchor and comfort.

When to seek professional help

If sundowning is becoming severe, frequent, or unsafe, it may be time to bring in professional support. Trained in-home dementia caregivers can take over the evening shift so you can rest, while RN oversight can review medications, assess for pain or infection, and adjust the care plan. A doctor should also rule out underlying causes such as a urinary tract infection, which can trigger sudden confusion.

You do not have to manage sundowning alone, and you should not have to. Rest is part of good care, for both your loved one and you.