What causes Down syndrome? | NICHD - NICHD - Eunice Kennedy …
2012年6月11日 · Sometimes, a parent who does not have Down syndrome may carry a translocation in chromosome 21 that can be passed on to children and cause Down syndrome. Studying the parents’ chromosomes can reveal whether this is the cause of the syndrome.
Down Syndrome - NICHD - Eunice Kennedy Shriver National …
2023年11月22日 · Generally, children with Down syndrome reach key developmental milestones later than other children. 2 People with the syndrome are also more likely to be born with heart abnormalities, and they are at increased risk for developing hearing and vision problems, Alzheimer’s disease, and other conditions. 1 However, with appropriate support and ...
What are common treatments for Down syndrome? - NICHD
2012年6月14日 · A child with Down syndrome likely will receive care from a team of health professionals, including, but not limited to, physicians, special educators, speech therapists, occupational therapists, physical therapists, and social workers. All professionals who interact with children with Down syndrome should provide stimulation and encouragement.
Down Syndrome | NICHD - NICHD - Eunice Kennedy Shriver …
2023年11月30日 · Down syndrome is a set of cognitive and physical symptoms that result from having an extra chromosome 21 or an extra piece of that chromosome. It is the most common chromosomal cause of mild to moderate intellectual disabilities. People with Down syndrome also have some distinct physical features, such as a flat-looking face, and they are at risk for a …
The NCI research program for children with Down syndrome primarily focuses on the acute leukemias that children with Down syndrome are at increased risk for developing. Children with Down syndrome have a cumulative risk for developing leukemia of approximately 2.1 percent by age five years and 2.7 percent by age 30 years.
How do health care providers diagnose Down syndrome?
2012年6月11日 · A diagnosis of Down syndrome after birth is often based initially on physical signs of the syndrome. But because individuals with Down syndrome may not have these symptoms, and because many of these symptoms are common in the general population, the health care provider will take a sample of the baby’s blood to confirm the diagnosis.
What are the symptoms of Down syndrome? - NICHD
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. Physical Symptoms. Common physical signs of Down syndrome include 1, 2: Decreased or poor muscle tone; Short neck, with excess skin at the back of the neck; Flattened facial profile and nose
Fragile X Syndrome - NICHD - Eunice Kennedy Shriver National …
2013年11月7日 · People with a full mutation often have Fragile X syndrome. The number of repeats, also called the “size of the mutation,” affects the type of symptoms and how serious the symptoms of Fragile X syndrome will be. Inheriting Fragile X Syndrome. Fragile X syndrome is inherited, which means it is passed down from parents to children.
What causes Fragile X syndrome? | NICHD - NICHD - Eunice …
2022年4月25日 · If the mutation is in most of the body’s cells, the person will probably have symptoms of Fragile X syndrome. If the mutation is in only some of the cells, the person might not have any symptoms at all or only mild symptoms.
What conditions or disorders are commonly associated with Down …
2012年6月22日 · People with Down syndrome are much more likely to die from untreated and unmonitored infections than other people. Down syndrome often causes problems in the immune system that can make it difficult for the body to fight off infections, so even seemingly minor infections should be treated quickly and monitored continuously.