تعريف sundowner syndrome في الإنجليزية الإنجليزية القاموس.
A 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.