47,XXY

47,XXY, also known as Klinefelter syndrome, is a genetic condition where a male has an extra X chromosome, resulting in a total of 47 chromosomes instead of the usual 46. This additional chromosome affects physical development and may cause features like taller stature, reduced muscle mass, limited facial and body hair, and enlarged breast tissue. Some individuals may experience learning difficulties or fertility issues, often requiring medical support. However, many lead healthy lives with appropriate treatment and support. The condition is typically inherited randomly and not usually linked to family history.