Why do children get chromosomes?

Patient's question:

My daughter is almost two years old and cannot sit steadily, she will never walk, and she will never answer. She has low intelligence. Previous treatment history and effectiveness: No allergies. No family history of genetic diseases. What kind of help is needed: How to be treated

Doctor's answer:

This could be Down syndrome, and this chromosomal abnormality cannot be treated. Most cases are inherited across generations.
Suggestions: Because one of you or your husband has a hidden chromosomal abnormality, you and your husband appear normal, but the child may inherit it as a dominant trait across generations. Another possibility is the use of medication during pregnancy or exposure to environmental factors such as industrial pollution, which can also cause chromosomal abnormalities in the fetus. This is generally not treatable.
The above advice addresses the question "Why do children get chromosomal abnormalities?" and is hoped to be helpful to you. Wishing you good health!