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Down Syndrome Symptoms Down syndrome is usually diagnosed during pregnancy through genetic screening or at birth through diagnostic tests. There are some distinct physical features that typically ...
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.
DOOR syndrome; Dopamine dysregulation syndrome; Down syndrome; Dravet syndrome; Dressler syndrome; Drug reaction with eosinophilia and systemic symptoms; Dry eye syndrome; Duane syndrome; Duane-radial ray syndrome; Dubin–Johnson syndrome; Dubowitz syndrome; Dumping syndrome; Dysexecutive syndrome; Dyskeratosis congenita; Dysplastic nevus syndrome
Global developmental delay is an umbrella term used when children are significantly delayed in two or more areas of development. It can be diagnosed when a child is delayed in one or more milestones, categorised into motor skills, speech, cognitive skills, and social and emotional development. [1]
An anaphase lag of a chromosome 21 in a Down syndrome embryo leads to a fraction of euploid cells (2n cells), phenomenon described as "aneuploidy rescue". There is considerable variability in the fraction of cells with trisomy 21, both as a whole and tissue-by-tissue. This is the cause of 1–2% of the observed Down syndromes. [4]
9q34 deletion syndrome is a rare genetic disorder. Terminal deletions of chromosome 9q 34 have been associated with childhood hypotonia , a distinctive facial appearance and developmental disability .
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 ...
If you are feeling down, there are things you can do to feel better. Here are expert tips for how to be happy and habits to implement for more joy. ... it definitely should be. Feel free to switch ...