Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Mosaic Down syndrome has some cells with three copies of chromosome 21, and some with two instead of all three.Only about 1% to 2% of people ...

Fetal alcohol syndrome (FAS) and Down syndrome are both conditions that are present at birth. While they both affect facial appearance, development, and physical health, they have different causes.

Down syndrome is a genetic disorder caused by an extra copy of chromosome 21. Along with causing intellectual disability and physical health issues, this condition may make a person more prone to ...

As October marks World Down Syndrome Awareness Month, it’s an opportune time to learn and support those with the condition. About 5,700 babies are born in the U.S. with Down syndrome each year, and ...

Professor Rhonda Faragher AO is Director of the Down Syndrome Research Program in the School of Education at the University of Queensland, Australia. She is also Vice-President of Down Syndrome ...

People with Down syndrome have a message for the world: "Assume that I can." An international awareness campaign, launched ahead of World Down Syndrome Day on Thursday, challenges negative biases that ...