Klinefelter Syndrome
Definition
Klinefelter syndrome is a chromosome disorder in males that results in hypogonadism (small penis and small firm testicles). People with this condition are born with at least one extra X chromosome.
Description
Klinefelter syndrome is a condition where one or more extra X-chromosomes are present in a male. Boys with this condition appear normal at birth, but the defect becomes apparent in puberty when secondary sexual characteristics fail to develop, or develop later. By mid-puberty, boys with Klinefelter syndrome have low levels of testosterone, resulting in small testicles and the inability to make sperm. Affected males may also...
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