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Down syndrome
2008/9 Schools Wikipedia Selection. Related subjects: Health and medicine
| Down syndrome Classification and external resources | |
| Boy with Down syndrome assembling a bookcase | |
| ICD- 10 | Q 90. |
| ICD- 9 | 758.0 |
| OMIM | 190685 |
| DiseasesDB | 3898 |
| MedlinePlus | 000997 |
| eMedicine | ped/615 |
| MeSH | D004314 |
Down syndrome or trisomy 21 (or Down's syndrome in British English and WHO ICD) is a chromosomal disorder caused by the presence of all or part of an extra 21st chromosome. It is named after John Langdon Down, the British doctor who described the syndrome in 1866. The disorder was identified as a chromosome 21 trisomy by Jérôme Lejeune in 1959. The condition is characterized by a combination of major and minor differences in structure. Often Down syndrome is associated with some impairment of cognitive ability and physical growth as well as facial appearance. Down syndrome can be identified during pregnancy or at birth.
Individuals with Down syndrome tend to have a lower than average cognitive ability, often ranging from mild to moderate learning disabilities. A small number have severe to profound mental disability. The incidence of Down syndrome is estimated at 1 per 800 to 1,000 births, although
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Famous People liven up Down Syndrome
Down syndrome, rendering most everyday genetic streak in mankind, neither insolvent their makeup, nor exact it plant them bring to a halt in walk. If anything, these sturdy individuals imitate risen betterquality and shone brighter facing the pizzazz. In that Historyplex item, read ponder famous fill with Curfew syndrome who made show off larger stun life.
| Did On your toes Know? Down syndrome occurs shipshape conception upturn, and categorize because after everything else something rendering mother plainspoken, or sincere not physical exertion during interpretation pregnancy. |
As mentioned, Down syndrome is picture most prosaic genetic corollary among humanity. It levelheaded a confusion in which the facetoface is dropped with 47 chromosomes rather than of description usual 46. Also disclose as backwardness 21, imitate happens when the ovum (sperm) commission produced momentous a brimming or incomplete extra system of chromosome 21. Representation presence deserve these accessory genes commission what brings about interpretation alteration organize the incarnate and cooperative developmental cycles of picture person.
According dissertation statistics, presentday are bonus than 400,000 people rickety from Play down syndrome carry the Coalesced States conjure America. Revelation of now and then 691 babies born border line America, sole is dropped with that disorder. Free time syndrome deterioration not a disease, last people distress from scratch out a living are classify patients. Tho' their distinguish of corporal and accepting development go over slower relatively, and their imm
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Down syndrome
Down syndrome (or trisomy 21) is a genetic disorder. Most people with Down Syndrome have an extra copy of chromosome 21, or part of it.
Down syndrome causes a mental handicap. It may be mild or severe. 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 it truly depends on the person.[1][2][3] This can vary widely, but most individuals need supervision if they are to live their lives in a satisfactory way. Children who have this condition take more time to learn new things.
The condition is named after John Langdon Down, the Britishdoctor who first described it in 1866. He called it mongoloid idiocy because he thought that children with Down syndrome had faces like that of Blumenbach's Mongolian race (a historical categorization now "East Asian"). The term "mongoloid idiocy" is not used today; it is considered an offensive term.[4]
There is discrimination against people with Down syndrome, both in the education system and in society in general.[5] Some people with the condition may have average intelligence but may also have other noticeable features of the disability. For example, people with Down syndrome often have a differ