Victorian government portal for older people, with information about government and community services and programs. Type a minimum of three characters then press UP or DOWN on the keyboard to navigate the autocompleted search results. They are found in every cell in your body and determine your physical and mental characteristics.
Down syndrome is a genetic disorder in which there is an extra full or partial chromosome For most people with Down syndrome, this anomaly causes a host of distinctive physical characteristics as well as potential health and medical problems. A person with this type of Down syndrome may have all the features of full trisomy 21, a few of them, or none at all.
Down syndrome was first described by Dr John Langdon Down in Despite the availability of improved antenatal diagnosis, the incidence of Down syndrome remains at around 1 in 1, births. The risk of Down syndrome increases with maternal age, and this is the most important risk factor.
Craniofacial Anomalies pp Cite as. Persons with Down Syndrome DS have, in addition to intellectual deficits, specific dysmorphic facial features. These include small, simply formed ears with overlapping helices, upward slant of palpebral fissures, epicanthal folds, small nose with depressed nasal bridge, mid-face hypoplasia, and a small oral cavity with broadened alveolar ridges and narrow palate Pueschel,
The symptoms of Down syndrome vary from person to person, and people with Down syndrome may have different problems at different times of their lives. Common physical signs of Down syndrome include 12 :. In addition, physical development in children with Down syndrome is often slower than development of children without Down syndrome.
Down syndrome is a condition in which a person has an extra chromosome. Typically, a baby is born with 46 chromosomes. Babies with Down syndrome have an extra copy of one of these chromosomes, chromosome
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 Those cells with 47 chromosomes have an extra chromosome
There are 23 pairs of chromosomes, for a total of Half the chromosomes come from the egg the mother and half come from the sperm the father. This XY chromosome pair includes the X chromosome from the egg and the Y chromosome from the sperm. In Down syndrome, there is an additional copy of chromosome 21, resulting in three copies instead of the normal two copies.
Back to Down's syndrome. All children born with Down's syndrome have some degree of learning disability and delayed development, but this varies widely between individual children. Children with Down's syndrome may be slower to learn skills like sitting, standing, walking and talking.
This causes physical and mental developmental delays and disabilities. Many of the disabilities are lifelong, and they can also shorten life expectancy. However, people with Down syndrome can live healthy and fulfilling lives. Recent medical advances, as well as cultural and institutional support for people with Down syndrome and their families, provides many opportunities to help overcome the challenges of this condition.