Down Syndrome is a genetic condition that occurs in approximately one in every 700 births. It is the most frequently occurring chromosomal condition and is found in people of all races and economic levels.

In every cell in the human body there is a nucleus, where genetic material is stored in genes. Genes carry the codes responsible for all of our inherited traits and are grouped along rod-like structures called chromosomes. Typically, the nucleus of each cell contains 23 pairs of chromosomes. Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21.

This additional genetic material alters the course of development and causes the characteristics associated with Down syndrome. A few of the common physical traits of Down syndrome are:
  • low muscle tone
  • small stature
  • an upward slant to the eyes
  • a single deep crease across the center of the palm

Each person with Down syndrome is a unique individual and may possess these characteristics to different degrees, or not at all.

People with Down Syndrome experience cognitive delays, but the effect is usually mild to moderate and is not indicative of the many strengths and talents that each individual possesses.  Children with Down Syndrome learn to sit, walk, talk, play, and do most other activities; only somewhat later than their peers without Down Syndrome.

Quality educational programs, a stimulating home environment, good health care, and positive support from family , friends and the community enable people with Down Syndrome to develop their full potential and lead fulfilling lives.  People with Down Syndrome attend school and work, and participate in decisions that concern them, and contribute to society in many wonderful ways.



The information featured in this section is reproduced via an exclusive arrangement with National Down Syndrome Society [ONLINE] Available at