Symptoms of Klinefelter Syndrome

     Many men with Klinefelter syndrome do not have obvious symptoms- the manifestation of symptoms often depends on the amount of testosterone produced in the body. The earlier symptoms are detected and treated, the less pronounced they will when the body reaches adulthood. Symptoms include:

• At 5 years old, boys with Klinefelter syndrome begin to show symptoms- they are often taller, clumsier, fatter around the stomach, and slower to develop motor skills than their peers.
• When boys with KS reach puberty, more dramatic changes start to show. They will have smaller testes and penis, less facial hair, and a weaker sex drive than others without KS.
• As adults, men with KS have issues with fertility, breast growth, and smaller genitals.