Down syndrome is a genetic condition that causes a number of physical and intellectual differences.
Children born with Down syndrome have an extra chromosome 21 in all the cells in their bodies. This extra chromosome changes how a baby’s body and brain develop.
With the right health care and support, many children with Down syndrome enjoy long, happy, full and independent lives.
Down syndrome: what you should know
- Down syndrome is one of the most common genetic conditions, occurring in one in 800 to one in 1,000 births.
- Children with Down syndrome usually have mild to moderate intellectual disability. They tend to reach their milestones, such as first words, crawling and walking, later than other children.
- Children with Down syndrome have an increased risk for a number of other health conditions, which can include the following: