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Sundowning, or sundown syndrome〔http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3246134/〕 is a psychological phenomenon associated with increased confusion and restlessness in patients with some form of dementia. Most commonly associated with Alzheimer's disease, but also found in those with mixed dementia, the term "sundowning" was coined due to the timing of the patient's confusion. For patients with sundowning syndrome, a multitude of behavioral problems begin to occur in the evening or while the sun is setting.〔Smith, G. (2011, April 28). Alzheimer. Retrieved from ==Symptoms== Symptoms are not limited to but may include: * Increased general confusion as natural light begins to fade and increased shadows appear.〔〔Keller, S. "Sundowning." WebMD. WebMD LLC, 2012. Web. 14 May 2012. http://www.webmd.com/alzheimers/guide/sundowning-causes-symptoms-treatments〕 * Agitation and mood swings. Individuals may become fairly frustrated with their own confusion as well as aggravated by noise. Individuals found yelling and becoming increasingly upset with their caregiver is not uncommon.〔〔 * Mental and physical fatigue increase with the setting of the sun. This fatigue can play a role in the individual's irritability.〔〔 * Tremors may increase and become uncontrollable. * An individual may experience an increase in their restlessness while trying to sleep. Restlessness can often lead to pacing and or wandering which can be potentially harmful for an individual in a confused state.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sundowning」の詳細全文を読む スポンサード リンク
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