What Is Down Syndrome.

Down Syndrome / down syndrome is the formation of chromosomal abnormalities chromosome 21 (trisomy 21) due to failure of a pair of chromosomes to each other apart during division.

Disorder which affects the physical growth retardation and mental child was first recognized in 1866 by Dr. John Longdon Down. Because the characteristics that seemed strange as the relative heights of the short, smaller head, flat nose resembles the Mongolian people are often also known as Mongoloid.

In the 1970s experts from America and Europe to revise the name of the abnormalities that occur in children with reference first inventor of this syndrome with the term Down Syndrome and until now the disease is known by the same term.