Down syndrome is set of mental and physical symptoms that result from having an extra copy of Chromosome 21. Normally, a fertilized egg has 23 pairs of chromosomes. In most people with Down syndrome, there is an extra copy of Chromosome 21 (also called trisomy 21 because there are three copies of this chromosome instead of two), which changes the body’s and brain’s normal development.
Early intervention can help many people with Down syndrome live productive lives well into adulthood. Children with Down Syndrome can often benefit from speech therapy, occupational therapy, and exercises for gross and fine motor skills. They might also be helped by special education and attention at school. Many children can integrate well into regular classes at school.