Down Syndrome is caused by the presence of an additional chromosome – chromosome 21. This is why it can also be known as “Trisomy 21”. Down Syndrome typically occurs because of a chance happening during cell division at the time of conception. This extra chromosome affects each person differently. Physical effects can include heart & digestive tract problems, and vision or hearing impairments.
And all babies born with Down Syndrome have low muscle tone otherwise known as hypotonia, which means that they have to work extra hard to master skills such as crawling, walking & talking. Everyone with Down Syndrome has some degree of learning disability which can be significantly improved given additional help and support.