Understanding Sundowning Syndrome: Expert Tips for Caregivers

The information provided in this article is for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment.

Sundowning is a set of confusing behaviors that often happen to people with dementia in the late afternoon, evening, or nighttime. These behaviors include increased restlessness, agitation, and anxiety as the sun begins to set. While it is not a formal medical diagnosis, it is a common pattern that caregivers should recognize to better support their loved ones.

You do not have to manage these challenges alone. It is time to speak with a doctor if your loved one’s behavior becomes impossible to handle or if their personality changes suddenly. Dr.Cook can determine if other medical issues are causing the confusion. She can help you create a plan to keep your loved one safe, healthy, and peaceful.

Caring for a person with dementia is a journey, and having a medical professional on your team provides comfort and practical solutions.

Elderly woman with white hair sitting anxiously in an armchair by a window at sunset while a caregiver gently rests a hand on her shoulder, representing sundowning syndrome and evening confusion in dementia patients

Image created with AI assistance for illustrative purposes.

What is Sundowning Syndrome?

Sundowning occurs when a person with memory loss seems to become more confused or upset as the day ends. Experts believe this is often linked to the body’s internal clock, also known as the circadian rhythm. This rhythm helps regulate when we feel awake and when we feel ready for sleep. When someone has dementia, their brain struggles to process signals like light and dark.

As the sun goes down, this difficulty can make them feel disoriented. As noted by the National Institute on Aging, these behavioral changes are common but can be managed with the right approach.

What is the link to the internal clock?

This leads to a mismatch between the actual time of day and the person’s behavior. The brain becomes confused about whether it is time to be active or time to rest.

Common triggers in the evening

Caregivers often notice that environmental changes trigger symptoms. Below are common factors that may worsen confusion:

Trigger Factor	How it Affects the Patient
Dim Lighting	Creates confusing shadows and shapes
Excess Noise	Overwhelms a brain struggling to focus
End of Day Fatigue	Lowers the person’s ability to cope
Hunger or Thirst	Increases physical discomfort and irritability

Recognizing Signs of Dementia and Sundowning

It is important to know the difference between general dementia and Alzheimer’s disease. Dementia is a broad term for many types of memory loss, while Alzheimer’s disease is one specific, common cause. Recognizing the early signs allows you to prepare for changes in behavior before they become difficult to manage.

Condition	Primary Definition	Behavior Impact
Dementia	A general term for memory loss	Symptoms usually get worse over time
Alzheimer’s	A specific disease damaging the brain	Often causes confusion in the evening

Research from the PMC indicates that up to 66% of people with Alzheimer’s will experience sundowning at some point. These signs are a physical reaction to the changes in their brain.

Key symptoms to watch for

Caregivers should look for specific behavioral shifts that happen consistently as the sun sets. Common signs include:

Increased pacing or restless walking.
Sudden mood swings or unexplained crying.
Increased stubbornness when asked to perform a simple task.
“Shadowing,” where the person follows the caregiver around.
Difficulty falling asleep or staying asleep.

Tracking changes in behavior

Keeping a simple diary can help you spot when these episodes occur. Tracking the time of day and the environment helps identify triggers. Use this checklist to organize your notes:

What time did the agitation start?
Was the TV or radio on?
Has the person eaten recently?
How bright was the lighting in the room?
Was there a change in the daily routine today?

How to Manage Sundowning in Arizona

You can take steps to make the evenings calmer for your family members. This is especially helpful in the bright, warm climate of Phoenix and Scottsdale. The Alzheimer’s Association emphasizes that consistent routines are the most effective tool for managing these evening episodes.

Create a calm environment: Try to keep the home quiet. As it gets dark, use lamps to reduce shadows.
Keep a routine: Try to do important tasks like doctor visits in the morning.
Improve sleep habits: Limit caffeine and heavy meals in the late afternoon.

Steps for a safer home

Safety is the top priority for families managing dementia. Follow these steps to prepare your home:

Use nightlights in the bathroom and hallways.
Remove rugs that could cause a fall.
Keep the home at a cool, comfortable temperature.
Lock away dangerous items, such as cleaning supplies.

Managing Arizona's heat

High temperatures can sometimes increase agitation. Keep the indoor environment cool and comfortable to prevent physical stress. During the summer months, dehydration can also lead to confusion. Ensure your loved one drinks enough water throughout the day, as even mild dehydration can make symptoms of dementia seem worse than they actually are.

Long-Term Care and Supporting the Brain

Managing long-term memory loss requires a look at how we support the brain throughout the entire day. Nutrition, social interaction, and physical activity all play a role in how a person feels when the sun goes down.

The role of physical activity

While it might seem counterintuitive, movement is medicine. Encouraging your loved one to walk or perform light stretches in the morning helps burn off excess energy. This physical activity can help them feel more tired by the time evening arrives, which may decrease nighttime restlessness.

Nutrition and its impact

What we eat affects how we feel. High sugar intake can cause energy crashes that lead to irritation. Try to provide healthy, balanced meals earlier in the day. If the person is hungry in the evening, offer a small, light snack rather than a heavy meal that might interfere with their digestion or sleep.

Conclusion

Managing sundowning syndrome is a journey that requires patience, observation, and a structured approach. While the changes in behavior associated with dementia can feel overwhelming, understanding that these symptoms are a result of the disease process – and not a choice made by your loved one – is a powerful step toward better care.

Remember that you do not have to navigate these challenges in isolation. Proactive communication with a healthcare team and a focus on the well-being of both the patient and the caregiver are essential to a sustainable care plan. Every small adjustment, from improving evening lighting to simplifying daily tasks, contributes to a safer and more dignified experience for those living with memory loss.

With the right strategies and professional support, families can successfully manage the complexities of sundowning and improve the quality of life for their loved ones every single day.

Frequently Asked Questions

What is the main cause of sundowning in dementia patients?

While the exact cause is still being researched, experts believe sundowning is linked to a disruption in the body’s circadian rhythm. This internal clock failure makes it difficult for the brain to process natural light and dark signals, leading to increased confusion as the sun sets.

How can I tell the difference between dementia and Alzheimer’s disease?

Dementia is a general term used to describe a broad range of symptoms related to memory loss and cognitive decline. Alzheimer’s disease is a specific, progressive type of brain disorder that is the most common cause of dementia in older adults.

What should I do if my loved one becomes aggressive during sundowning?

It is important to remain calm and avoid reacting with frustration, as your loved one’s behavior is a symptom of the disease, not a choice. Focus on creating a quiet, well-lit environment and consult with a geriatrician to rule out physical discomforts like infections or sleep disturbances.

Does the environment in Phoenix or Scottsdale affect sundowning symptoms?

Yes, environmental factors like extreme heat, bright outdoor light, and shifting shadows can impact a patient’s comfort level. Keeping the home at a cool, consistent temperature and using lamps to reduce harsh shadows in the evening can help manage these behavioral symptoms.

Can daily routines help reduce sundowning behaviors?

Establishing a consistent daily routine is one of the most effective ways to provide structure for someone living with dementia. By scheduling physical activity and medical appointments during the morning hours, you can help stabilize their sleep-wake cycle and reduce evening restlessness.

When is it necessary to seek help from a doctor for sundowning?

You should contact a medical professional if your loved one experiences sudden personality shifts or if their agitation becomes a safety risk. A doctor can conduct an evaluation to identify underlying triggers or medical issues that need professional management.