Memory, reasoning, conduct, and the capacity to carry out daily chores are all impacted by dementia, a degenerative illness. Among the many challenges associated with dementia, sundowning is one of the most distressing for both older adults and their caregivers. Sundowning refers to a pattern of increased confusion, anxiety, agitation, or restlessness that typically occurs during the late afternoon, evening, or nighttime. While not everyone with dementia experiences sundowning, those who do often struggle with disrupted routines, sleep disturbances, and emotional distress.

Recognizing the signs early and adopting practical management strategies can improve the quality of life for individuals with dementia while reducing caregiver stress. Understanding the causes, symptoms, and interventions is an essential part of effective geriatric care.

What Is Sundowning?

Sundowning, also known as late-day confusion, is a behavioral phenomenon commonly observed in people living with Alzheimer’s disease and other forms of dementia. During the evening hours, individuals may become increasingly confused, irritable, suspicious, or emotionally upset. These behavioral changes are often temporary but can significantly affect daily functioning and family dynamics.

Although researchers have not identified a single cause of sundowning, it is believed to result from a combination of neurological changes, environmental factors, fatigue, and disruptions in the body’s internal clock (circadian rhythm).

Common Signs and Symptoms

The symptoms of sundowning vary from person to person but usually become noticeable as daylight begins to fade. Common indicators include:

• Increased confusion or disorientation
• Restlessness or pacing
• Irritability or sudden mood changes
• Anxiety and fearfulness
• Verbal or physical aggression
• Hallucinations or delusions
• Difficulty recognizing familiar people
• Refusal to cooperate with routine activities
• Sleep disturbances or nighttime wandering

These behaviors often lessen during the morning hours, creating a repeating daily pattern.

Why Does Sundowning Occur?

Several factors may contribute to the development of sundowning in individuals with dementia.

Changes in the Brain

Dementia damages brain regions responsible for regulating sleep, mood, and orientation. As cognitive functioning declines, the brain finds it increasingly difficult to process environmental cues that distinguish day from night.

Fatigue

By evening, many individuals become physically and mentally exhausted. The accumulated fatigue can reduce their ability to cope with confusion, resulting in agitation or emotional outbursts.

Low Lighting

As natural light decreases, shadows become more noticeable, and familiar surroundings may appear unfamiliar. Reduced visibility can increase fear, confusion, and misinterpretation of the environment.

Disrupted Biological Clock

Damage to the brain’s sleep-wake regulation may interfere with circadian rhythms, making it difficult to distinguish daytime from nighttime and increasing evening restlessness.

Risk Factors

Although sundowning can occur in any stage of dementia, certain factors increase the likelihood of experiencing it:

• Moderate to advanced dementia
• Poor sleep quality
• Physical illness or pain
• Medication side effects
• Dehydration or hunger
• Changes in daily routine
• Sensory deficiencies like hearing or eyesight 
• Overstimulation during the day

Understanding these triggers allows caregivers to anticipate behavioral changes and implement preventive strategies. Public awareness initiatives led by organizations that support a mental health foundation also play an important role in educating families about dementia care and early intervention.

Practical Ways to Manage Sundowning

Although sundowning cannot be cured, there are several non-pharmacological strategies that can greatly lessen its frequency and severity. 

Maintain a Consistent Daily Routine

A structured schedule provides predictability and reduces confusion. Keeping regular times for meals, bathing, medication, exercise, and bedtime helps individuals feel secure throughout the day.

Encourage Daytime Activity

Gentle physical exercise, social interaction, and mentally stimulating activities during the day can improve nighttime sleep and decrease evening restlessness. Participating in a cognitive skill development program designed for older adults may further help preserve daily functioning and engagement.

Improve Lighting

Keeping rooms well-lit during late afternoon and evening minimizes confusing shadows. Opening curtains during the day and gradually increasing indoor lighting before sunset may ease the transition from daylight to darkness.

Limit Evening Stimulation

Avoid loud television programs, large gatherings, or emotionally upsetting conversations during the evening. A calm environment with soothing music or quiet activities often promotes relaxation.

Promote Healthy Sleep Habits

Encourage exposure to natural sunlight during the morning, reduce daytime naps if excessive, and avoid caffeine or heavy meals close to bedtime. A comfortable sleeping space promotes higher-quality sleep. Relaxation techniques used in mindfulness therapy may also help reduce anxiety and support a calmer evening routine for some individuals.

Managing Emotional Distress

When a person experiences sundowning, arguing or correcting them often increases anxiety. Instead, caregivers should focus on reassurance and validation.

Helpful communication techniques include:

• Speaking slowly and calmly
• Maintaining eye contact
• Using short, simple sentences
• Offering reassurance rather than confrontation
• Redirecting attention to pleasant activities
• Providing familiar objects for comfort

Remaining patient and emotionally supportive helps prevent escalation and promotes a sense of safety.

Supporting Caregivers

It can be emotionally and physically taxing to care for someone who is experiencing sundowning. Caregivers frequently experience chronic pain, sleep deprivation, and feelings of helplessness.

Seeking emotional support, joining caregiver support groups, taking regular breaks, and sharing responsibilities with family members can reduce burnout. Healthcare professionals should also be consulted whenever behavioral symptoms suddenly worsen, as infections, pain, medication changes, or other medical conditions may contribute to increased agitation.

The growing prevalence of dementia highlights the importance of strengthening public health initiatives that promote caregiver education, early diagnosis, community awareness, and accessible support services for older adults and their families.

When Medical Evaluation Is Necessary

Although behavioral interventions are usually the first choice, professional evaluation is important if:

• Agitation becomes severe or dangerous.
• The person begins wandering frequently.
• Hallucinations cause significant distress.
• Sleep problems become persistent.
• Sudden behavioral changes occur without an obvious reason.

Healthcare professionals can assess possible medical causes, review medications, and recommend individualized treatment plans when necessary. Medication should only be considered after non-drug approaches have been explored, as some medications may increase risks in older adults. Community resources, including an NGO for education, can also support caregivers by providing awareness programs, dementia education, and practical caregiving guidance.

Conclusion

Sundowning is a common yet challenging symptom experienced by many individuals living with dementia. Recognizing early warning signs, identifying triggers, and creating a calm, predictable environment can greatly reduce evening confusion and distress. Compassionate communication, structured daily routines, proper sleep hygiene, and caregiver support all contribute to better outcomes for both the individual and their family. While managing sundowning requires patience and flexibility, small, consistent adjustments can make daily life safer, calmer, and more meaningful.

Organizations such as TalktoAngel provide accessible online mental health support, while Psychowellness Center offers professional psychological and behavioral health services for individuals and families facing dementia-related challenges. Global Development Foundation continues to promote awareness, community outreach, and initiatives that support the well-being and dignity of older adults through education and advocacy.

Contribution: Dr. R. K. Suri, Clinical Psychologist & Life Coach, and Ms. Tanu Sangwan, Counselling Psychologist.

References  

https://www.psychowellnesscenter.com/Blog/psychological-tricks-that-can-prevent-dementia

https://www.psychowellnesscenter.com/Blog/lifestyle-factors-that-reduce-the-risk-of-dementia

Alzheimer’s Association. (2024). Dementia-related behaviors. https://www.alz.org

Cipriani, G., Lucetti, C., Danti, S., & Nuti, A. (2015). Sundown syndrome and dementia. Psychogeriatrics, 15(1), 40–46. https://doi.org/10.1111/psyg.12054

National Institute on Aging. (2023). Coping with agitation, aggression, and sundowning in Alzheimer’s disease. https://www.nia.nih.gov

Riemersma-van der Lek, R. F., Swaab, D. F., Twisk, J., Hol, E. M., Hoogendijk, W. J. G., & Van Someren, E. J. W. (2008). Effect of bright light and melatonin on cognitive and noncognitive function in elderly residents of group care facilities. JAMA, 299(22), 2642–2655. https://doi.org/10.1001/jama.299.22.2642

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