Down Syndrome Health Topics

Featured Conditions and Diseases

Down Syndrome

Often associated with mental retardation, Down syndrome is a condition occurring in 1 out of 800 live births. This eMedTV article takes an in-depth look at Down syndrome, including symptoms, risk factors, and treatment options.

Trisomy 21

Mosaic trisomy 21, as this eMedTV segment explains, is a genetic variation that can cause Down syndrome. In mosaic trisomy 21, the extra chromosome 21 is present in only some of the cells, which means that associated physical problems can vary.