sundowning
Behavioral and psychological symptoms that worsen during late afternoon and evening hours, commonly observed in dementia patients.
Full Definition
Sundowning, also known as sundown syndrome, describes the phenomenon where individuals with dementia experience increased agitation, confusion, anxiety, or other behavioral disturbances during the late afternoon and evening hours. This circadian-related symptom pattern affects approximately 20% of people with Alzheimer's disease and other dementias. The exact mechanisms are not fully understood but may involve disruptions to circadian rhythms, increased fatigue, reduced lighting, or changes in caregiver routines. Understanding this term is essential for editors reviewing geriatric psychiatry and dementia care literature, as it represents a significant clinical challenge requiring specific management strategies.
Usage
Usage note: Often written as one word, but 'sundown syndrome' uses two words.
In Context
- "The nursing home implemented bright light therapy to reduce sundowning behaviors in residents." — Quality improvement report
- "Family members reported that the patient's sundowning had worsened since the medication change." — Psychiatry consultation note