Down syndrome - Symptoms and causes - Mayo Clinic
2024年11月12日 · Mosaic Down syndrome. This is a rare form of Down syndrome. People with mosaic Down syndrome have only some cells with an extra copy of chromosome 21. This mosaic of typical and changed cells is caused by an unusual cell division after the egg has been fertilized by the sperm. Translocation Down syndrome.
Down syndrome - Diagnosis and treatment - Mayo Clinic
2024年11月12日 · People with Down syndrome can live fulfilling lives. Most people with Down syndrome live with their families, in supported living settings or independently. With needed support, most people with Down syndrome go to mainstream schools, read and write, make decisions, have friends, enjoy an active social life, and have jobs.
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 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
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 …
Síndrome de Down - Síntomas y causas - Mayo Clinic
2018年3月8日 · Esto quiere decir que no tienen signos ni síntomas de síndrome de Down, pero pueden pasar la translocación desequilibrada a sus hijos y provocar que tengan síndrome de Down. Factores de riesgo Algunos padres tienen mayor …
What causes Down syndrome? | NICHD - NICHD - Eunice Kennedy …
2012年6月11日 · As the registry grows, families and researchers learn more about Down syndrome and identify similarities and differences in the symptoms and treatment of people with Down syndrome from around the world. The information collected helps guide future research and treatment. Learn more about DS-Connect ®: The Down Syndrome Registry.
متلازمة داون - الأعراض والأسباب - Mayo Clinic (مايو كلينك)
متلازمة داون هي اضطراب وراثي يحدث حين يؤدي انقسام الخلايا غير الطبيعية إلى إنتاج مادة جينية إضافية من كروموسوم 21.
Ehlers-Danlos syndrome - Symptoms and causes - Mayo Clinic
2022年8月25日 · Ehlers-Danlos syndrome is a group of inherited disorders that affect your connective tissues — primarily your skin, joints and blood vessel walls. Connective tissue is a complex mixture of proteins and other substances that provide strength and elasticity to the underlying structures in your body.
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.