ANCSLEEP BLOG

Understanding Sundowning and Its Impact on Sleep

Posted by Darian Dozier on Jun 1, 2025 8:00:00 AM

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For individuals with dementia or Alzheimer’s disease, nighttime can bring a host of challenges, including increased confusion, agitation, and restlessness. This phenomenon, known as sundowning, can significantly impact both the affected individual and their caregivers. Understanding why sundowning occurs and how to manage its effects can improve sleep quality and overall well-being.

What is Sundowning?

Sundowning, or sundown syndrome, refers to a pattern of increased agitation, confusion, and mood changes that typically occur in the late afternoon and evening. It is commonly observed in people with dementia, though the exact cause is not fully understood. Factors that contribute to sundowning include disrupted circadian rhythms, fatigue, and sensory overload from the day’s activities.

How Sundowning Affects Sleep

Sundowning can lead to sleep disturbances in several ways:

  • Increased Anxiety and Restlessness: As confusion sets in, individuals may experience heightened anxiety, making it difficult to relax and fall asleep.

  • Disrupted Sleep-Wake Cycles: The body’s internal clock may become dysregulated, leading to difficulty distinguishing between day and night.

  • Frequent Nighttime Awakenings: Those experiencing sundowning often wake up multiple times during the night, further contributing to sleep deprivation.

  • Wandering and Nighttime Agitation: Some individuals may feel compelled to get out of bed and move around, increasing the risk of falls and injuries.

Tips for Managing Sundowning and Improving Sleep

While sundowning cannot always be prevented, several strategies can help reduce its impact and promote better sleep:

  1. Maintain a Consistent Routine
    Establishing a predictable daily schedule can help reinforce a sense of stability and reduce confusion.

  2. Limit Stimulants in the Evening
    Reducing caffeine, sugar, and stimulating activities in the afternoon and evening can encourage relaxation.

  3. Create a Calming Bedtime Environment
    Dimming lights, playing soothing music, and using weighted blankets or aromatherapy can promote a sense of calm before bedtime.

  4. Encourage Exposure to Natural Light
    Spending time outdoors during the day or using light therapy can help regulate circadian rhythms and improve sleep patterns.

  5. Monitor Naps and Physical Activity
    Encouraging light physical activity earlier in the day while avoiding long or late naps can help prevent nighttime wakefulness.

  6. Provide Reassurance and Comfort
    Gentle reassurance, a comforting presence, and redirecting attention to calming activities can help ease anxiety during episodes of sundowning.

  7. Consult a Healthcare Provider
    If sundowning significantly affects sleep and daily functioning, a healthcare provider can evaluate potential underlying causes and recommend appropriate interventions, including medication if necessary.

Conclusion

Sundowning presents significant challenges for individuals with dementia and their caregivers, often disrupting sleep and overall well-being. By understanding the triggers and implementing effective management strategies, it is possible to reduce agitation and promote better rest. Prioritizing a structured routine, a calming sleep environment, and professional support can improve nighttime comfort and quality of life for those affected by sundowning.

If you or someone you know struggles with sleep, please click the orange button below to take a free online sleep test and talk with one of our sleep health professionals. 

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