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Overview. Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. Klinefelter syndrome is a common genetic condition affecting males, and it often isn't diagnosed until adulthood. Klinefelter syndrome may adversely affect testicular growth, resulting in smaller than normal testicles,...What are the causes of Mosaic Klinefelter syndrome?
Causes. An extra X chromosome in some of the cells (mosaic Klinefelter syndrome), with fewer symptoms More than one extra copy of the X chromosome, which is rare and results in a severe form Extra copies of genes on the X chromosome can interfere with male sexual development and fertility.What should I do if I have Klinefelter syndrome?
Connect with other parents. Klinefelter syndrome is a common condition, and you — and your son — aren't alone. Ask your doctor about internet resources and support groups that may help answer questions and ease concerns. If you have Klinefelter syndrome, you may benefit from these self-care measures: Work closely with your doctor.What is the life expectancy of a man with Klinefelter syndrome?
Advances in fertility treatments have made it possible for some to father children. In general, life expectancy is normal. Some research has found that life expectancy for men with the condition may be a year or two less than those without it because of other health problems linked to Klinefelter. Johns Hopkins Medicine: “Klinefelter Syndrome.”