Genetics Home > Klinfelter Syndrome
Were you looking for information about Klinefelter Syndrome? Klinfelter syndrome is a common misspelling of Klinefelter syndrome.
Klinefelter syndrome is a chromosomal condition that affects the sexual development in men. This condition occurs when there is a presence of one or more extra X chromosome in a male's cells. Extra copies of genes on the X chromosome interfere with male sexual development, preventing the testicles from functioning normally and reducing the levels of testosterone in the body. Also, men who have Klinefelter syndrome may have breast development, small testes, and sparse facial and body hair.
(For more information, click Klinefelter Syndrome. This article offers an overview of this condition, including information on how it is diagnosed and treated. You can also click any of the links in the box to the right for specific information.)