DOWN SYNDROME FACTS:
The three forms of Down syndrome (DS) are trisomy 21, mosaicism and translocation. All three involve chromosome number 21 and include the same signs and symptoms.
The most common form is trisomy 21, in which every single cell in the body has an entire extra chromosome 21 (three instead of two).
According to Down Syndrome SA, DS occurs in about 1 in 500 live births in South Africa.
Conditions can include low muscle tone, heart problems, speech delays and mild to moderate learning difficulties.
Strengths can include great social understanding and empathy, as well as strong visual learning skills.
No two people with DS are the same. Some may have only two or three symptoms, while others have more.
21 March is World Down Syndrome Day. The date, 21/3, represents the three number 21 chromosomes which causes the condition (trisomy 21).