sundowner syndrome

alternative sundown syndrome · alternative sundowner's syndrome · alternative sundowners syndrome

1. uncountablehuman sciencesA state of agitation, confusion, or delirium, especially in elderly patients suffering from Alzheimer's disease or other forms of dementia, which begins daily at nightfall and which is alleviated by daylight.

   Patients who become easily confused, such as elderly patients with "sundowner syndrome" or dementia, and patients recovering from drug-related hallucinations may manifest symptoms during flight regardless of the time of day.

   2003, Susan B. Connor, “Ch. 10: Nursing Care in Flight”, in Aeromedical Evacuation, New York: Springer, →ISBN, page 139

   Synonyms: nocturnal delirium, sundowning