Klinefelter Syndrome is also known as the XXY Male Syndrome. This is a genetic condition that only affects males. This condition occurs when the male have an extra X Chromosome in their cells.
This syndrome can affect the males different stages in Language, Physical and Social Development. Men who was born with this kind of condition have very low levels of testosterone or sex hormones. It can also lead to reduced growth of muscle and body / facial hair.
This condition also affects a man's infertility and therefore cannot be a father. If this is diagnosed before birth or during the childhood years, this ailment can be prevented and be treated.