Sundowning is a phenomenon seen in elderly people, especially those with Alzheimer's or other dementia-related conditions. It refers to a state of confusion that typically occurs late in the day or at night. Synonyms for sundowning may include "nocturnal confusion," "evening disorientation," or "dusk delirium." Other terms that have been used to describe this condition include "sunset syndrome," "twilight state," "night-time agitation," and "sundown syndrome." Regardless of the term used, the symptoms of sundowning can include agitation, restlessness, confusion, and hallucinations, and can be distressing for both the individual affected and their caregivers.