Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the The average IQ of a young adult with Down syndrome is 50, equivalent to the mental ability of an 8- or 9-year-old child, but this can vary widely.
Find out about DiGeorge syndrome, including why it happens and what problems it some children and adults have heart defects from birth (congenital heart disease) Charities such as Max Appeal may also be a good source of support.
Laron syndrome is a rare form of short stature that results from the body's If the condition is not treated, adult males typically reach a maximum height of about.
In the U.S., Down syndrome is the least funded major genetic condition by our . Although children and adults with Down syndrome may share some common.