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John Langdon Down. John Langdon Haydon Down (18 November 1828 – 7 October 1896) was a British physician best known for his description of the genetic condition now known as Down syndrome, which he originally classified in 1862. He is also noted for his work in social medicine and as a pioneer in the care of mentally disabled patients.
Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability, and characteristic physical features. [1] [12] There are three types of Down syndrome, the ...
The term idiot savant (French for "learned idiot") was first used to describe the condition in 1887 by John Langdon Down, who is known for his description of Down syndrome. Down described approximately ten cases of youth he had known with unusual mental powers, like "verbal adhesion" (eg. memorizing books read once), photographic memory for ...
Mongolian idiocy. The obsolete medical terms Mongolian idiocy and Mongolism referred to a specific type of mental deficiency, associated with the genetic disorder now known as Down syndrome. The obsolete term for a person with this syndrome was Mongolian idiot . In the 21st century, these terms are no longer used as medical terminology, deemed ...
Here are amazing individuals with Down syndrome who are breaking the barriers of disability stigmas. Edward Barbanell. A comedian who has been in hit productions such as Workaholics and The Ringer ...
1 in 15,000–20,000 people [2] Prader–Willi syndrome ( PWS) is a rare genetic disorder caused by a loss of function of specific genes on chromosome 15. [2] In newborns, symptoms include weak muscles, poor feeding, and slow development. [2] Beginning in childhood, those affected become constantly hungry, which often leads to obesity and type ...
In 1862, John Langdon Down classified what is now called Down syndrome. He used the term mongoloid for the condition. This was derived from then-prevailing ethnic theory [25] and from his perception that children with Down syndrome shared physical facial similarities (epicanthic folds) with those of Blumenbach 's Mongolian race .
John Langdon Down (after whom Down's syndrome – known in the US as Down syndrome – was named) was medical superintendent of the hospital from 1855 to 1868. At this time patients slept in fifteen-bed dormitories and there was one member of staff to each seven patients. Tuberculosis accounted for the majority of deaths in the institution.
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