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  2. He is 15 and has non-verbal Down Syndrome. Jamison Crowder knows first hand the challenges of having a family member with Down...

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  4. Down syndrome - Genetics Home Reference - NIH

    Down syndrome is a chromosomal condition that is associated with intellectual disability, a characteristic facial appearance, and weak muscle tone (hypotonia) in infancy. All affected individuals experience cognitive delays, but the intellectual disability is usually mild to moderate.

  5. Down Syndrome: Causes, Symptoms, Diagnosis, & Treatment

    Mosaic Down syndrome. This is the rarest type, where only some cells have an extra chromosome 21. This is the rarest type, where only some cells have an extra chromosome 21.

  6. Down syndrome - Wikipedia

    Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is typically associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features.

  7. The NDSS Buddy Walk® on Washington is an annual two-day advocacy conference that brings the Down syndrome community together to advocate for legislative priorities that impact the lives of people with Down syndrome and their families.

  8. Down syndrome - Symptoms and causes - Mayo Clinic

    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.

  9. Down Syndrome - KidsHealth

    Down syndrome (DS), also called Trisomy 21, is a condition in which a person is born with an extra chromosome. Chromosomes contain hundreds, or even thousands, of genes. Genes carry the information that determines your traits (features or characteristics passed on to you from your parents).

  10. Down Syndrome: Causes, Types, and Symptoms

    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, trisomy 21.

  11. Down Syndrome - MedicineNet

    Down syndrome is a condition caused by chromosome replication errors. A baby born with Down syndrome may have symptoms such as unusual facial features, low IQ, and difficulty learning to walk and crawl.

  12. Down Syndrome | Birth Defects | NCBDDD | CDC

    Down syndrome is a condition in which a person has an extra chromosome. Chromosomes are small “packages” of genes in the body. They determine how a baby’s body forms during pregnancy and how the baby’s body functions as it grows in the womb and after birth. Typically, a baby is born with 46 ...

  13. Down Syndrome: Trisomy 21 - Causes, Symptoms and Risks

    Down Syndrome: Causes, Symptoms and Risks. Down syndrome is the most common genetic condition in the United States. It was first described in 1866 and is named after John Langdon Down, the doctor who first identified the syndrome.