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Down syndrome; Other names: Down's syndrome, Down's, trisomy 21: An eight-year-old boy displaying characteristic facial features of Down syndrome: Specialty: Medical genetics, pediatrics: Symptoms: Delayed development, characteristic physical features, mild to moderate intellectual disability [1] Usual onset: Mostly at conception, rarely after ...
Down syndrome is a genetic disorder that often results in distinct physical differences and intellectual disability. According to the Centers for Disease Control, each year about 6,000 babies are ...
Down syndrome and fragile X syndrome are examples of syndromic intellectual disabilities. Intellectual disability affects about 2–3% of the general population. [11] Seventy-five to ninety percent of the affected people have mild intellectual disability. [11] Non-syndromic, or idiopathic cases account for 30–50% of these cases. [11]
Developmental disability. Developmental disability is a diverse group of chronic conditions, comprising mental or physical impairments that arise before adulthood. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in "language, mobility, learning, self-help, and independent ...
October 4, 2024 at 10:08 PM. My daughter Molly. Approximately one in every 775 babies in the United States is born with Down syndrome, according to the National Down Syndrome Society. I learned ...
The average IQ of a young adult with Down syndrome is 50, equivalent to the mental age of an 8- or 9-year-old child, but this number varies widely. [3] At the same time, they enjoy a rich social and emotional awareness. [4] Down syndrome is the most common chromosome abnormality in humans, [3] occurring in about one per 1000 babies born each ...
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.
A mother shares her story about being diagnosed with mosaic Down syndrome. ... One year later, their daughter Evelyn, now 15 months, was born, and though Evelyn also went through genetic testing ...