Physical Characteristics
People whom have been diagnosed with Klinefelter's Syndrome have only a few major physical tendencies that are apparent. For example, because of the disorder giving them two X chromosomes, they become much more feminine. For example they usually lack and/or lose a lot of body hair, and have noticeably higher pitched voices than those of regular men their age. People with the disorder are also usually infertile, as the genitalia produce semen but not sperm cells.
Image of Karyotype
Here is the Karyotype of someone with Klinefelter's Syndrome. If you look, there are two X chromosomes and one Y, whereas in a normal human there are either two X chromosomes (for a girl) or one Y and one X chromosome (for a boy)
Treatments
There aren't any cures for this disorder however there are many treatments to improve the quality of life, such as hormonal pills, breast reduction surgery, speech therapy, among many other things
Interesting Fact
In Australia, every 1:500 to 1:1000 baby boys are born with Klinefelter's Syndrome
Sites
http://library.med.utah.edu/WebPath/TUTORIAL/PRENATAL/PREN043.html
Klinefelter's syndrome. (2010). In H. Marcovitch (Ed.), Black's medical dictionary, 42nd edition. London, United Kingdom: A&C Black. Retrieved from http://search.credoreference.com/content/entry/blackmed/klinefelter_s_syndrome/0
http://library.med.utah.edu/WebPath/TUTORIAL/PRENATAL/PREN043.html
Klinefelter's syndrome. (2010). In H. Marcovitch (Ed.), Black's medical dictionary, 42nd edition. London, United Kingdom: A&C Black. Retrieved from http://search.credoreference.com/content/entry/blackmed/klinefelter_s_syndrome/0