Sundowning syndrome is a pattern of increased confusion, agitation, and behavioral disturbance that typically occurs in the late afternoon and evening in people with dementia and related neurological conditions. For my husband, Norman, whose health has declined over seven years with dementia, Parkinson’s disease, and the use of a wheelchair, sundowning has become one of the most difficult and unpredictable complications to manage. His mobility is restricted to his bed and wheelchair, and he is unable to walk or stand on his own. What is especially hurtful is how his personality seems to shift calmly and affectionate in the morning, then suddenly defensive, argumentative, and agitated after about 4 PM. This has profound emotional and practical consequences for both of us.
Physiologically, sundowning may be linked to fatigue, disruptions in circadian rhythms, reduced sensory input as daylight fades, and brain changes associated with dementia and Parkinson’s. Medication timing, pain, hunger, dehydration, and environmental factors like noise or overstimulation can all make symptoms worse. For Norman, late-afternoon visits or changes in routine seem to trigger a different response: he becomes irritable for no apparent reason, misinterprets benign questions as confrontations, and sometimes adopts an entirely different tone and manner than he had earlier that same day.
These episodes complicate caregiving in several ways. Communication becomes strained; straightforward conversations can escalate because his processing is slower and his ability to regulate emotion is impaired. When confronted, he might shift from recognition and warmth to distrust and argumentativeness, making it impossible to reason or reassure him. Simple attempts to redirect or correct can be perceived as criticism, prompting defensive or even hostile reactions. That alters the dynamics of our interactions — I find myself defaulting to short, calming phrases like “I’m sorry you feel that way” and “I love you,” then stepping away to protect both of our emotional safety.
Safety and logistics are also affected. Agitation raises fall risk, complicated transfers in and out of his wheelchair, and can interrupt necessary care like medication administration or personal hygiene. Nighttime agitation disrupts our sleep patterns, leading to cumulative exhaustion that worsens sundowning and reduces my capacity to cope. Social activities must be scheduled carefully: my recent visit to California illustrates that clearly. Mornings were joyful; my two visits with our granddaughter, Lola, were full of warmth and recognition, but a late afternoon visit after 4 PM brought a stark reversal. The Norman I said goodbye to that evening was unrecognizable from the man who had smiled earlier, and that split undermines the emotional resilience needed for caregiving.
Emotionally, sundowning causes grief, frustration, and isolation for caregivers. Feeling blamed for someone else’s mood swings is common, and the unpredictability of episodes erodes opportunities for meaningful connection. It can also create family tension when others aren’t present, when they witness late-day shifts, and when they misinterpret the situation. For the person with dementia, sundowning can increase confusion, fear, and distress, worsening overall quality of life.
Managing these complications requires a multilayered approach: maintaining consistent routines; optimizing lighting and minimizing noise in the late afternoon; adjusting medication schedules in consultation with clinicians; ensuring adequate hydration and nutrition; and scheduling important visits earlier in the day. Most importantly, caregivers need self-compassion and respite. Using simple, reassuring phrases, stepping away when necessary, and seeking support from health professionals and support groups can help preserve dignity and safety for both the person with sundowning and the caregiver.