What is sundowner syndrome? There is no clear definition of sundowner syndrome, but it's typically a spectrum of unusual behaviors that often include confusion, agitation, and restlessness that occur late in the afternoon into the evening. Sundowners Syndrome primarily affects the elderly who have Alzheimer's disease or other forms of dementia. According to the Alzheimer's Association, as many as 1 out of 5 people with Alzheimer's exhibit … [Read more...]