A Caregiver's Guide to Understanding and Managing Sundowning

Every afternoon around 4 PM, something shifts. Your parent — who was pleasant and lucid at lunch — becomes agitated, confused, or anxious. They might insist on leaving the house to "go home" even though they're already home. They might accuse you of things that didn't happen. They might pace, cry, or refuse to eat dinner. By morning, they're back to their baseline, and you're left exhausted and heartbroken.

This pattern has a name: sundowning. And if you're caring for someone with dementia or Alzheimer's, there's a good chance you're already familiar with it — even if you didn't know what to call it.

What Is Sundowning?

Sundowning (also called sundowner's syndrome) refers to a pattern of increased confusion, agitation, anxiety, or behavioral changes that occur in the late afternoon and evening. It affects an estimated 20-45% of people with Alzheimer's disease and can also occur in other forms of dementia.

Despite decades of research, sundowning isn't fully understood. It's not a disease itself — it's a collection of symptoms that follow a predictable time pattern. The leading theories about its cause include:

• Circadian rhythm disruption: Damage to the brain's internal clock (the suprachiasmatic nucleus) disrupts the body's sense of day and night
• Fatigue accumulation: The cognitive reserves that help a person with dementia compensate during the day are depleted by evening
• Low light triggering confusion: Dimming light and increasing shadows can cause visual misperceptions and anxiety
• Hormonal changes: Shifts in melatonin and cortisol levels as the day progresses
• Unmet needs: Pain, hunger, thirst, or overstimulation that builds throughout the day and manifests in the evening

What Sundowning Looks Like

Sundowning manifests differently in each person, but common behaviors include:

• Increased confusion and disorientation
• Agitation, irritability, or anger
• Anxiety or fearfulness
• Pacing, wandering, or attempting to leave the home
• Paranoia or suspicion ("Someone is in the house")
• Crying or emotional distress
• Resistance to caregiving (refusing to eat, bathe, or take medication)
• Hallucinations or delusions
• Difficulty sleeping or reversed sleep-wake cycles

Strategies That Help

Light Management

Because circadian rhythm disruption is a primary driver, light therapy can make a meaningful difference:

• Maximize natural light exposure during the day — open curtains, go outside when possible
• Use bright, full-spectrum light therapy lamps in the morning (30-60 minutes)
• Keep the home well-lit as the afternoon progresses — turn on lights before it starts getting dark
• Use nightlights in hallways and bathrooms to reduce disorientation at night
• Minimize screen time in the evening, as blue light can further disrupt sleep patterns

Routine Is Everything

Predictability reduces anxiety for people with dementia. Build a consistent daily routine:

• Wake up, eat meals, and go to bed at the same time every day
• Schedule stimulating activities (outings, socializing, exercise) for the morning when cognitive reserves are highest
• Gradually shift to calmer, more soothing activities as the afternoon progresses
• Create an evening wind-down ritual: soft music, a warm beverage, gentle conversation

Reduce Afternoon and Evening Triggers

• Limit caffeine after noon
• Avoid heavy meals late in the day
• Reduce noise and activity levels in the evening — turn off the TV news, minimize visitors
• Close curtains before the sun starts setting to reduce shadows that can cause visual confusion
• Avoid asking your parent to do complex tasks in the evening

Address Unmet Physical Needs

Sometimes sundowning behaviors are driven by something concrete that the person can't articulate:

• Are they in pain? Many elderly patients underreport pain
• Are they hungry or thirsty?
• Do they need to use the bathroom?
• Are they too hot or too cold?
• Is a medication causing side effects that worsen in the evening?

Respond with Validation, Not Correction

When your parent says they want to "go home" or insists that a deceased relative is coming to visit, the instinct is to correct them. Resist it. Arguing with a person experiencing dementia-related confusion only increases their agitation.

Instead, validate their feelings: "It sounds like you're feeling unsettled. Let's sit together for a bit." Redirect gently: "Before we go, let me make you some tea." The goal isn't truth — it's comfort.

When to Talk to the Doctor

Sundowning often fluctuates, but consult the physician if:

• Symptoms suddenly worsen (could indicate an infection, especially UTI)
• Your parent becomes a danger to themselves or others
• Sleep disruption becomes severe and persistent
• You suspect a medication may be contributing
• The behavior is new and doesn't match the existing diagnosis

The doctor may adjust medications, evaluate for underlying causes, or recommend a sleep study. Keep a log of when episodes occur, how long they last, and what seems to trigger or help them — this information is invaluable for the medical team.

Taking Care of Yourself as the Evening Caregiver

Sundowning doesn't just affect the person with dementia. It affects you. The daily anticipation of the evening shift — knowing that the hardest hours are coming — creates its own kind of chronic stress.

• Tag-team if possible: If another family member or hired aide can cover the evening hours even a few nights a week, take the break
• Give yourself permission to feel frustrated: Loving someone and being exhausted by their behavior can coexist
• Connect with other caregivers: Support groups (in-person or online) for dementia caregivers are one of the most effective interventions for caregiver burnout
• Track patterns: Use Brelti's daily check-in feature to log your parent's sundowning episodes — time, severity, triggers, what helped. Over time, patterns emerge that can guide better management

The Bigger Picture

Sundowning is one of the most challenging aspects of dementia caregiving because it turns the end of every day into a trial. But understanding that it has physiological causes — not willful behavior — can shift how you experience it. Your parent isn't choosing to be difficult. Their brain is struggling with signals it can no longer process correctly.

With the right environmental adjustments, consistent routines, and support from your care team, sundowning can be managed — not eliminated, but softened into something more predictable and less overwhelming.

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