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2018年3月8日 · Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. This extra genetic material causes the developmental changes and physical features of Down syndrome. Down syndrome varies in severity among individuals, causing lifelong intellectual disability and developmental delays.
2018年3月8日 · Screening for Down syndrome is offered as a routine part of prenatal care. Although screening tests can only identify your risk of carrying a baby with Down syndrome, they can help you make decisions about more-specific diagnostic tests. Screening tests include the first trimester combined test and the integrated screening test.
2023年11月22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 are at risk for several other health conditions.
2018年3月8日 · Algunos niños con síndrome de Down presentan anomalías gastrointestinales, que pueden comprender anomalías de los intestinos, el esófago, la tráquea y el ano. Pueden presentar mayor riesgo de tener problemas digestivos, como obstrucción gastrointestinal, acidez estomacal (reflujo gastroesofágico) o enfermedad celíaca.
2023年11月22日 · Down syndrome describes a set of cognitive and physical symptoms that result from an extra copy or part of a copy of chromosome 21. Chromosomes carry the genes that tell the body to develop in certain ways and to perform certain functions.
Children with Down syndrome are more likely to have epilepsy, a condition characterized by seizures, than those without Down syndrome. The risk for epilepsy increases with age, but seizures usually occur either during the first 2 years of life or after the third decade of life.
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.
متلازمة داون اضطراب ورثي يسببه الانقسام غير الطبيعي في الخلايا مما يؤدي إلى زيادة النسخ الكلي أو الجزئي في الكروموسوم 21. وتسبب هذه المادة الوراثية الزائدة تغيرات النمو والملامح الجسدية ...
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 number of other health conditions.
Parents and families of children with Down syndrome can connect with other families and people with Down syndrome from around the world to learn more and share information. The NICHD-led DS-Connect ® is a safe and secure registry to help families and researchers identify similarities and differences in the physical and developmental symptoms and milestones of people with Down syndrome and ...
