The symptoms of Klinefelter syndrome depend on the age of the affected person and include muscle weakness and delayed motor movement among babies, delayed puberty and bone weakness among teenagers, and infertility and breast tissue enlargement among male adults, according to Mayo Clinic. Babies may also experience speech delay and failure of the testicles to descend into the scrotum, while teenagers may have small penises and less-than-normal body hair. Adults may have low sexual urge.
It is advisable to seek prompt medical attention when the symptoms of Klinefelter syndrome appear to prevent them from worsening, notes Mayo Clinic. To diagnose the condition, a doctor first performs a physical exam on the patient's body before ordering further diagnostic tests such as chromosome analysis and hormone testing. While chromosome analysis helps to determine the chromosome number and shape, hormone testing determines hormonal levels. Treatment options that exist as of 2015 focus on reducing the effects of the condition but not reversing the condition itself completely, and they include speech and physical therapies, testosterone replacement therapy, and surgery to remove the breast tissue.
Klinefelter syndrome is a disorder of the genes in which a male person has abnormal number of X chromosomes in each of his sex cells, explains Mayo Clinic. The condition results in lack of sperm production or lower-than-normal sperm production, leading to an inability to reproduce.