Don't delay your care at Mayo Clinic
Featured conditions Brain tumor, breast cancer, colon cancer, congenital heart disease, heart arrhythmia. See more conditions.
Featured conditions
Mayo Clinic offers appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System locations.
Subscribe to Housecall
Our general interest e-newsletter keeps you up to date on a wide variety of health topics.
The term "sundowning" refers to a state of confusion occurring in the late afternoon and spanning into the night. Sundowning can cause a variety of behaviors, such as confusion, anxiety, aggression or ignoring directions. Sundowning can also lead to pacing or wandering.
Sundowning isn't a disease, but a group of symptoms that occur at a specific time of the day that may affect people with dementia, such as Alzheimer's disease. The exact cause of this behavior is unknown.
Some research suggests that a low dose of melatonin — a naturally occurring hormone that induces sleepiness — alone or in combination with exposure to bright light during the day may help ease sundowning.
When sundowning occurs in a care facility, it may be related to the flurry of activity during staff shift changes or the lack of structured activities in the late afternoon and evening. Staff arriving and leaving may cue some people with Alzheimer's to want to go home or to check on their children — or other behaviors that were appropriate in the late afternoon in their past. It may help to occupy their time with another activity during that period.
With
Jonathan Graff-Radford, M.D.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.