What is sundowning?
Sundowning is a pattern of increased confusion, agitation, and behavioral changes that occur in the late afternoon or early evening in people with dementia or cognitive decline.
Sundowning refers to a behavioral pattern common in people with dementia or Alzheimer's disease, where confusion, agitation, anxiety, and restlessness intensify as daylight fades. The symptoms typically emerge in the late afternoon or early evening hours, sometimes continuing into the night. Affected residents may experience disorientation, emotional distress, increased wandering, or difficulty following instructions during these periods.
The exact cause remains unclear, but researchers point to several contributing factors: the brain's struggle to process dimming light and circadian rhythm disruptions, accumulated fatigue from the day, reduced staffing visibility in common areas, or sensory changes that make low light particularly disorienting for people with cognitive decline.
Assisted living facilities address sundowning through structured staff scheduling and environmental adjustments. This often includes maintaining brighter lighting in late afternoon hours, ensuring staff presence during peak sundowning times, establishing calm routines, and minimizing triggers like noise or unfamiliar activities. Facilities that focus on memory care develop personalized approaches for each resident, as the severity and type of sundowning behavior varies widely. Understanding sundowning helps families and caregivers set realistic expectations and work with facility staff to create supportive conditions during these challenging hours.