Did King Yeongjo (1694-1776) of Joseon Dynasty Korea suffer dementia during the last decade of his reign?

초록

King Yeongjo, the 21st king of Joseon (18th Century Korea), reigned during the prime years of the dynasty and was its oldest king. Despite his many accomplishments, debate surrounds his reputed display of the symptoms of dementia during the last years of his life. The King showed signs of dementia after 40 years of his regency in 1762 at the age of 69 years, including disorientation, cognitive impairment, amnestic disorder and so on. We examined evidence from the Annals of the Joseon Dynasty and related research papers. Additionally, dementia specialists were asked to undertake a survey to provide objectivity to the literary findings. Prior to his death in 1776, 25 meaningful dementia symptoms were recorded in the Annals across a 10-year period. However, despite indications of dementia, the Joseon dynasty supported him as a king and helped him retain his dignity until the end. This suggests that historical perception changes regarding dementia may also inform current-day attitudes to improve the living standards of patients suffering from dementia and related neuropsychiatric disorders.

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