Are there different types of Down syndrome?

There are three types of Down syndrome: trisomy 21 (nondisjunction), translocation and mosaicism. Trisomy 21 (nondisjunction) accounts for 95% of known cases of Down syndrome.

What is the lowest form of Down syndrome?

Mosaicism or mosaic Down syndrome is diagnosed when there is a mixture of two types of cells. Some have the usual 46 chromosomes and some have 47. Those cells with 47 chromosomes have an extra chromosome 21. Mosaicism is usually described as a percentage.

Can a baby have Down syndrome and look normal?

Some of the children with Mosaic Down syndrome that we know do not actually look as if they have Down syndrome – the usual physical features are not obvious. This raises some important and difficult social issues and identity issues for both parents and children, which parents have discussed with us.

What does mild Down syndrome look like?

A few of the common physical traits of Down syndrome are low muscle tone, small stature, an upward slant to the eyes, and a single deep crease across the center of the palm – although each person with Down syndrome is a unique individual and may possess these characteristics to different degrees, or not at all.

Can a person with Down syndrome live like a normal being?

Most kids with Down syndrome will live a normal life Although they will experience learning and developmental delays — and possibly health problems — children born with Down syndrome can grow up to be independent.

Can you tell if a newborn has Down syndrome?

Diagnostic tests can typically detect whether or not a baby will have Down syndrome, but they can be more risky for the mother and developing baby. Neither screening nor diagnostic tests can predict the full impact of Down syndrome on a baby; no one can predict this.

What are the signs of Down syndrome in a newborn?

At birth, babies with Down syndrome usually have certain characteristic signs, including:

  • flat facial features.
  • small head and ears.
  • short neck.
  • bulging tongue.
  • eyes that slant upward.
  • atypically shaped ears.
  • poor muscle tone.