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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's or Down syndrome, which he originally classified in 1862.
Down syndrome or Down's syndrome, [12] 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.
Down Syndrome is a genetic disorder that was first described in 1866 by British doctor John L. Down. [2] It was discovered to be caused by an extra chromosome by French pediatrician Jérôme Lejeune in July 1958, less than two years before Tricia was born. [3] Medical advice in 1960 was typically to institutionalize children with Down Syndrome.
Mosaic Down syndrome: Only some cells in the person have an extra copy of chromosome 21. This genetic cause is considered rare. This genetic cause is considered rare.
The term idiot savant (French for 'learned idiot') was first used to describe the condition in 1887 [24] 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 ...
The NDSS was founded by Betsy Goodwin and Arden Moulton. Goodwin's daughter, Carson was born in 1978 with Down Syndrome. [2] [3] The parents soon discovered that the support and resources available to parents with Down syndrome children were very limited.
Race Eberhardt might soon be a household name!. The 37-year-old is the first actor with Down syndrome to ever lead an action movie, in the upcoming film Strait Undercover, produced by Fish & Crown ...
Down syndrome is the most common genetic condition in the U.S. Approximately 400,000 Americans have Down syndrome. Here are amazing individuals with Down syndrome who are breaking the barriers of ...