Patient's question:
Yesterday, when my wife and I went dancing at the square, we met a person. That person was kind of silly. Later, when we mentioned that person to the other dancers, one of them said that person was her neighbor and had Klinefelter syndrome. It's actually quite pitiful. I didn't even know what Klinefelter syndrome was.Doctor's answer:
Hello, Klinefelter syndrome, also known as XYY chromosome syndrome, is a condition in which individuals have 47XYY chromosomes. It was first discovered in 1961. In their sex chromosomes, the X chromosome is negative, while the Y chromosome is double-positive. The karyotype of the chromosomes is 47, XYY. The extra Y chromosome is caused by the failure of chromosome separation during the meiosis of the father's germ cells. It is a congenital disease.