![WILLIAMS SYNDROME](http://s1.studyres.com/store/data/017843854_1-84f0db316fb53a13c6bf4d02cecc18e8-300x300.png)
WILLIAMS SYNDROME
... • Specific Language Impairment (SLI): – Language problems without any obvious cause. – fifty to seventy percent of children with SLI have at least one other family member with the disorder ...
... • Specific Language Impairment (SLI): – Language problems without any obvious cause. – fifty to seventy percent of children with SLI have at least one other family member with the disorder ...
Williams syndrome
![](https://commons.wikimedia.org/wiki/Special:FilePath/WilliamsSyndrome.jpg?width=300)
Williams syndrome (WS), also known as Williams–Beuren syndrome (WBS), is a rare neurodevelopmental disorder characterized by: a distinctive, ""elfin"" facial appearance, along with a low nasal bridge; an unusually cheerful demeanor and ease with strangers; developmental delay coupled with strong language skills; and cardiovascular problems, such as supravalvular aortic stenosis and transient high blood calcium.It is caused by a deletion of about 26 genes from the long arm of chromosome 7. It occurs in 1 in 7,500 to 1 in 20,000 births. The syndrome was first identified in 1961 by New Zealander J.C.P. Williams.