What is Klinefelter syndrome? How do I support a partner who has it?

Having two X chromosomes and one Y chromosome (or a genotype of XXY, instead of XY) does indeed have a name ? and that name is Klinefelter syndrome! Bravo for wanting to find out more about this condition that occurs more often you might suspect. Klinefelter Syndrome ? or KS for short ? affects one out of every 500 to 1,000 baby boys of all races and ethnicities, although many people might not be diagnosed until adulthood. Why you ask? Because the symptoms aren?t always totally easy to spot and can vary depending on a man?s age. Because KS involves a random error in sex chromosomes (a.k.a. the chromosome that differentiates a fetus into a male or a female), men with KS often have smaller testicles and therefore don?t produce as much testosterone. Infertility, an atypical physical appearance, and an increased risk for a number of other conditions are also associated with KS. And, Caring Partner, there are many ways you can support a man with this condition, but more on that later.