What sundowning is
Sundowning is a well-documented pattern, mostly seen in people with dementia or Alzheimer's, where confusion, agitation, restlessness, or anxiety noticeably worsens in the late afternoon and evening. It's not fully understood why it happens, but disruption to the body's internal clock, fatigue built up over the day, and low light creating more visual confusion are all thought to play a role.
But new or sudden evening confusion isn't automatically sundowning
If your parent doesn't already have a dementia diagnosis, or the evening confusion is new or clearly worse than their normal baseline, it's worth ruling out other, treatable causes before assuming it's sundowning:
- Urinary tract infection (UTI). In older adults, a UTI very often shows up as confusion or behavior change first — sometimes with no classic UTI symptoms at all.
- Dehydration. Especially if fluid intake has dropped, or it's been hot.
- A medication side effect or interaction. Especially if a medication was recently added, changed, or the timing shifted.
- Another underlying medical issue showing up as confusion — this is common enough in older adults that it's always worth a call to the care team rather than assuming.
The one question that matters most
Does your parent already have a diagnosis of dementia, Alzheimer's, or another memory-related condition? If yes, evening worsening is very plausibly sundowning, and the guidance below can help. If no — or if this is new, sudden, or clearly worse than their usual pattern — treat it as a possible medical symptom and call their doctor or care team rather than waiting it out.
What tends to help with sundowning specifically
- Keeping a consistent daily routine, especially around waking, meals, and bedtime
- More light exposure earlier in the day, and keeping rooms well-lit before it gets dark rather than letting the transition to evening happen in dim light
- Limiting caffeine and any daytime napping late in the afternoon
- Keeping evenings calm and lower-stimulation — less noise, fewer visitors, a simpler environment
- Gently reorienting rather than arguing if they're confused about time or place — correcting them forcefully tends to increase agitation, not resolve it
If it's getting worse or feels unsafe
Significant agitation, wandering risk, or aggression in the evening is worth bringing to your parent's doctor directly — there are real treatment approaches, and you don't have to just manage it alone indefinitely.