Short neck, with excess skin at the back of the neck. Flattened facial profile and nose. Small head, ears, and mouth. Upward slanting eyes, often with a skin fold that comes out from the upper eyelid and covers the inner corner of the eye.
What are the key characteristics of Down syndrome?
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.
What are 5 facts about Down syndrome?
13 Facts About Down Syndrome That Parents Should Know
- Down syndrome is named after John Langdon Down. …
- Down syndrome is caused by an extra chromosome. …
- Experts don’t fully understand why it occurs. …
- Down syndrome is the most common chromosomal condition. …
- There are three types of Down syndrome.
What characteristics are typical in a child diagnosed with Down syndrome?
Kids with Down syndrome tend to share physical features such as a flat facial profile, an upward slant to the eyes, small ears, and a tongue that sticks out. Low muscle tone (called hypotonia) is also common in kids with Down syndrome.
Many children and adults with Down syndrome have a wonderful disposition: they are fun loving and their interactions generally involve teasing, making jokes, giggly outbursts that often may also lead to intrusive, uninhibited social behaviors.
What are the types of Down syndrome?
There are three types of Down syndrome:
- Trisomy 21. This is by far the most common type, where every cell in the body has three copies of chromosome 21 instead of two.
- Translocation Down syndrome. In this type, each cell has part of an extra chromosome 21, or an entirely extra one. …
- Mosaic Down syndrome.
What are signs of Down syndrome on ultrasound?
Certain features detected during a second trimester ultrasound exam are potential markers for Down’s syndrome, and they include dilated brain ventricles, absent or small nose bone, increased thickness of the back of the neck, an abnormal artery to the upper extremities, bright spots in the heart, ‘bright’ bowels, mild …
What are 3 facts about Down syndrome?
Facts About Down Syndrome
- Down syndrome occurs in approximately one in 700 births. …
- There are three types of Down syndrome. …
- Down syndrome has been depicted in historical paintings from the 15th and 16th centuries. …
- Prenatal screening for Down syndrome is available. …
- Other health problems can occur with Down syndrome.
What are the causes of Down syndrome?
About 95 percent of the time, Down syndrome is caused by trisomy 21 — the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.
Is Down syndrome recessive or dominant?
Like cystic fibrosis, Down’s Syndrome is autosomal recessive. This means that the condition is genetic and passed down by the mother and/or the father but the condition is not shown in the parents. An autosomal recessive disorder requires two copies of the abnormal gene for the disease or trait to develop.
What are the early signs of Down syndrome in babies?
Some common physical features of Down syndrome include:
- A flattened face, especially the bridge of the nose.
- Almond-shaped eyes that slant up.
- A short neck.
- Small ears.
- A tongue that tends to stick out of the mouth.
- Tiny white spots on the iris (colored part) of the eye.
- Small hands and feet.
How is Down syndrome diagnosed?
amniocentesis, a prenatal diagnosis method in which a needle is inserted into the amniotic sac that surrounds the fetus. Amniocentesis is most often used to detect Down syndrome and other chromosomal abnormalities. This test is usually done in the second trimester, after 15 weeks of gestation.
Can a child have Down syndrome and not look like it?
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 are the cognitive characteristics of a person with Down syndrome?
Cognitive impairment, problems with thinking and learning, is common in people with Down syndrome and usually ranges from mild to moderate. Only rarely is Down syndrome associated with severe cognitive impairment. Other common cognitive and behavioral problems may include1,2,3,4: Short attention span.
What are 4 common congenital anomalies of a child with Down syndrome?
The most common associated anomalies were cardiac anomalies, 323 cases (44%), followed by digestive system anomalies, 42 cases (6%), musculoskeletal system anomalies, 35 cases (5%), urinary system anomalies, 28 cases (4%), respiratory system anomalies, 13 cases (2%), and other system anomalies, 26 cases (3.6%).