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From today's featured articleDementia with Lewy bodies is a common dementia characterized by changes in sleep, behavior, cognition, movement, and automatic bodily functions. Symptoms worsen over time until cognitive decline interferes with normal daily functioning. The core features are REM sleep behavior disorder (in which people act out their dreams), visual hallucinations, marked fluctuations in attention or alertness, and parkinsonism. The exact cause is unknown, but involves deposits of abnormal clumps of protein in the brain, known as Lewy bodies. Gastrointestinal and heart function can be affected. Definitive diagnosis usually requires an autopsy, and a probable diagnosis—based on symptoms and tests—is often missed. Management of the many symptoms is challenging and involves multiple specialties. There is no cure or medication to stop the disease progression. After the suicide of Robin Williams (pictured) in 2014, his autopsy found that diffuse Lewy bodies explained his symptoms. (Full article...) Did you know ...
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On this dayJuly 21: Belgian National Day (1831) ![]() Depiction of the Ciompi Revolt by Giuseppe Lorenzo Gatteri
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The Alcázar of Seville is a royal palace in Seville, Spain, built for the Christian king Peter of Castile in 1364–1366. It was built by Castilian Christians on the site of an Abbadid Muslim alcázar, or residential fortress, destroyed after the Christian reconquest of Seville. The palace is a prime example of Mudéjar architecture in the Iberian Peninsula, but also features elements of Gothic, Renaissance and Romanesque architecture from previous stages of construction. This photograph depicts the domed ceiling of the Hall of Ambassadors in the Alcázar of Seville. Photograph credit: Joaquim Alves Gaspar
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