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Down syndrome - Symptoms and causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/down-syndrome/symptoms-causes/syc-20355977
WebMar 8, 2018 · Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. This extra genetic material causes the developmental changes and physical features of Down syndrome. Down syndrome varies in severity among individuals, causing lifelong intellectual disability and …
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Down syndrome - Wikipedia
https://en.wikipedia.org/wiki/Down_syndrome
WebDown syndrome is the most common chromosomal abnormality. It occurs in about 1 in 1,000 babies born each year. In the US this figure is given as one in 700 births. In 2015, Down syndrome was present in 5.4 million individuals globally and resulted in 27,000 deaths, down from 43,000 deaths in 1990.
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Facts about Down Syndrome | CDC
https://www.cdc.gov/ncbddd/birthdefects/downsyndrome.html
WebLast Reviewed: October 10, 2023. Source: National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention. Down syndrome is a condition in which a person has an extra chromosome. Learn …
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Down Syndrome: Causes, Types, and Symptoms - Healthline
https://www.healthline.com/health/down-syndrome
WebNov 28, 2023 · Down syndrome (sometimes called Down’s syndrome) is a condition in which a child is born with an extra copy of their 21st chromosome — hence its other name,...
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Down Syndrome: Symptoms & Causes - Cleveland Clinic
https://my.clevelandclinic.org/health/diseases/17818-down-syndrome
WebDown syndrome is a genetic condition where a person is born with an extra copy of chromosome 21. This means that they have a total of 47 chromosomes instead of 46. This can affect how their brain and body develop. People diagnosed with Down syndrome have happy and healthy lives with supportive care.
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About Down Syndrome | National Down Syndrome Society (NDSS)
https://ndss.org/about
WebApr 6, 2021 · Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21. This additional genetic material alters the course of development and causes the characteristics associated with Down syndrome.
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Down Syndrome - NICHD - Eunice Kennedy Shriver National …
https://www.nichd.nih.gov/health/topics/factsheets/downsyndrome
WebNov 22, 2023 · Down syndrome is a set of cognitive and physical symptoms that result from having an extra chromosome 21 or an extra piece of that chromosome. It is the most common chromosomal cause of mild to moderate intellectual disabilities. People with Down syndrome are at risk for several other health conditions.
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Down Syndrome | Boston Children's Hospital
https://www.childrenshospital.org/conditions/down-syndrome
WebDown syndrome is a genetic condition that happens when a child is born with an extra chromosome. The extra chromosome affects the way the child’s brain and body develop, leading to developmental delays, intellectual disability, and an increased risk for certain medical issues.
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Down syndrome - Diagnosis and treatment - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/down-syndrome/diagnosis-treatment/drc-20355983
WebMar 8, 2018 · Doctors & departments. Diagnosis. The American College of Obstetricians and Gynecologists recommends offering the option of screening tests and diagnostic tests for Down syndrome to all pregnant women, regardless of age. Screening tests can indicate the likelihood or chances that a mother is carrying a baby with Down syndrome.
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About Down Syndrome | National Institutes of Health (NIH)
https://www.nih.gov/include-project/about-down-syndrome
WebJun 20, 2018 · Down syndrome is a condition in which a person is born with an extra copy of chromosome 21. The condition is associated with intellectual disability, a characteristic facial appearance, and weak muscle tone (hypotonia) in infancy. People with Down syndrome may have a variety of birth defects.
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