Kolby+M.







= = ==Down syndrome, Down's syndrome, or trisomy 21 is a chromosomal disorder caused by the presence of all or part of an extra 21st chromosome. It is named after John Langdon Down; he is a British doctor who described the syndrome in 1866. It was identified as chromosome 21 trisomy by Jerome lejeune in 1959. It is often associated with some impairment of cognitive ability and physical growth as well as facial appearance. Down syndrome can be detected in a child before birth or after birth by using amniocentesis. People with Down syndrome tend to have a lower average cognitive ability, often ranging from mild to moderate. An estimated 1 per 800 to 1,000 births the kids will have Down syndrome. Theses stats are heavily influence by the age of the mother. Other factors may also have some influence to these stats. Children with Down syndrome tend to have one crease across their palms. An almond shape of the eyes is caused by an epicanthic fold of the eyelid up slanting the palpebral fissures. They also have shorter limbs and poor muscle tone. People with down syndrome are more prone to have heart defects. ==

Treatments:
==There is no specific treatment for Down syndrome. Certain heart defects may also require surgery after birth. Special education is offered in most communities for children with learning disabilities. Speech can help with communication skills and physical therapy may be needed to teach movement skills. People with Down syndrome should be checked regularly for eye problems, hearing loss, thyroid disease, and other medical conditions associated with Down syndrome. ==  Statistics: 100 percent of the people with down syndrome over 35 years of age will show signs of Alzhimer's. 80% of down syndrome cases occur in mother under 35 years of age.

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