Down syndrome

A genetic chromosome 21 disorder causing developmental and intellectual delays.


Down syndrome is a genetic disorder caused when abnormal cell division results in extra genetic material from chromosome 21


The disorder causes a distinct facial appearance, intellectual disability, developmental delays, and sometimes health concerns.


Better understanding and early interventions can greatly increase quality of life.

© 1998-2023 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. | Terms of Use