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Down syndrome or Down's syndrome, [12] also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability , and characteristic physical features.
A child with Down syndrome. A prominent example of a genetically determined neurodevelopmental disorder is trisomy 21, also known as Down syndrome. This disorder usually results from an extra chromosome 21, [41] although in uncommon instances it is related to other chromosomal abnormalities such as translocation of the genetic material.
Down syndrome is a genetic condition in which people are born with an extra copy of chromosome 21. This extra copy affects the development of the body and brain, causing a range of physical and mental impairments for the individual. Fragile X syndrome, most frequent among males, is thought to cause autism and intellectual disability.
Mosaic Down syndrome: Only some cells in the person have an extra copy of chromosome 21. This genetic cause is considered rare. This genetic cause is considered rare.
About 5,700 babies are born with Down syndrome each year in the U.S., and over 400,000 people in the country currently live with it, according to the Centers for Disease Control and Prevention (CDC).
Emotional dysregulation tends to present as emotional responses that may seem excessive compared to the situation. Individuals with emotional dysregulation may have difficulty calming down, avoid difficult feelings, or focus on the negative. [36] On average, women tend to score higher on scales of emotional reactivity than men.
Lindsey Wiggins tells PEOPLE she had some inklings that her daughter might have Down syndrome, but "broke down" when a doctor suggested tests at 4 months old Mom in Tears After 4-Month-Old Is ...
Hypersonic effect; Imposter syndrome; Irrelevant speech effect; Kappa effect; Kewpie doll effect; Kinetic depth effect; Kuleshov effect; Lady Macbeth effect; Lake Wobegon effect; Lawn dart effect; Less-is-better effect; Levels-of-processing effect; Martha Mitchell effect; Matthew effect; McCollough effect; McGurk effect; Mere-exposure effect ...