Question
What causes Down syndrome?
Answer
Most cases of Down syndrome are caused by a second error in the division of the 21st pair of chromosomes during the segregation of heredity, resulting in an excess of chromosomes in the cell nucleus; a few are due to chromosomal translocations. Children with Down syndrome should receive timely medical treatment, and parents should avoid using medication blindly to alleviate symptoms, and closely observe changes in their child’s condition to help them receive timely treatment for the disease.