Sunset syndrome | Evening syndrome and Alzheimer’s

Sunset syndrome is associated with Alzheimer’s disease or mixed dementia in elderly patients. The symptoms of sunset syndrome are confusion and agitation, as well as behavioral problems.

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Sunset syndrome  usually occurs in the middle of the stage of Alzheimer’s disease or mixed dementia and affects 20-45% of Alzheimer’s patients. Most patients who have this syndrome recognize and understand that their behavior is abnormal. These symptoms seem to disappear when a patient progresses further in dementia.

The name is given to the fact that the sunset syndrome (or twilight syndrome or evening syndrome) usually occurs in twilight periods, especially in the late afternoon. People with Alzheimer’s disease may experience restlessness, agitation, irritability or confusion that can start or worsen as daylight begins to fade.


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