Disability Resources > Down Syndrome
Down syndrome
The most common chromosomal condition linked with intellectual disabilities
What Is Down Syndrome?
Just like other disabilities, down syndrome is a A genetic condition that affects learning and development
Down syndrome occurs when a child is born with an extra chromosome, resulting in 47 instead of the usual 46. This additional chromosome changes the development of the body and brain. In most cases, the diagnosis is confirmed by a chromosome test shortly after birth.
Just as in the general population, individuals with Down syndrome vary widely in their abilities, behavior, and progress. Intellectual disability ranges from mild to severe, with most people functioning in the mild to moderate range. With support, inclusion, and opportunity, children and adults with Down syndrome can thrive.
Types of Down Syndrome
Trisomy 21
About 95% of cases; an extra chromosome 21 is present in every cell.
Translocation Down Syndrome
About 3–4% of cases; the extra chromosome 21 attaches to another chromosome.
Mosaic Down Syndrome
About 1–2% of cases; some cells have the extra chromosome, while others do not.
Three forms, similar in characteristics
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Trisomy 21 – Accounts for about 95% of cases. Every cell contains an extra chromosome 21.
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Translocation – About 3–4% of cases. The extra chromosome 21 attaches to another chromosome.
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Mosaicism – About 1–2% of cases. Some cells have the extra chromosome, while others do not.
Every case is unique
Understanding Down Syndrome
People with Down syndrome may share common physical features and experience developmental delays, but every individual has their own strengths, abilities, and personality. Like everyone else, children and adults with Down syndrome thrive when they are included and supported.
Quick facts to know
briths result in a child with down syndrome
babies are born with Down syndrome in the U.S. each year.
Average life expectancy for those with down syndrome.
Supporting growth and well-being
Children with Down syndrome may face delays in physical growth, speech, and learning, and may also experience medical challenges such as heart or thyroid conditions. Early intervention services, therapies, and ongoing medical care can help children reach their fullest potential.
Helpful Resources
Learn more about Down Syndrome
The Utah Parent Press shares helpful tips, inspiring stories, and important updates for parents, families, and communities across Utah. From school resources to family experiences, these articles are written to guide, encourage, and keep you informed.