• Boys who are born with this syndrome have low levels of the sex hormone testosterone because this condition could affect testicular growth, which could result in reduced muscle growth, gynecomastia (enlarged breast tissue) and reduced body and facial hair. (epharmapedia.com)
  • Sometimes, weaker bones, lower energy levels and gynecomastia may be caused due to the low testosterone levels caused by klinefelter syndrome. (epharmapedia.com)
  • Starting testosterone therapy at the time of the usual onset of puberty could be helpful in treating or preventing a number of problems caused by Klinefelter syndrome. (epharmapedia.com)


  • Although infertility could be caused by something other than this syndrome, however, men are not diagnosed with this condition until they realize that they are not able to father a child. (epharmapedia.com)
  • His clinical and translational research interests focus on the preservation of fertility in adolescents with Klinefelter Syndrome, the genetics of male infertility and testicular failure, and the role of antivirals on spermatogenesis and sperm chromatin damage. (weillcornell.org)


  • Marfan syndrome is an inherited disorder of the connective tissue that causes abnormalities of a child's eyes, cardiovascular system, and musculoskeletal system. (healthofchildren.com)
  • Marfan syndrome affects three major organ systems of the body: the heart and circulatory system, the bones and muscles, and the eyes. (healthofchildren.com)
  • The most common external signs associated with Marfan syndrome include excessively long arms and legs, with the child's arm span being greater than his or her height. (healthofchildren.com)
  • Most of the external features of Marfan syndrome become more pronounced as the child gets older, so that diagnosis of the disorder is often easier in adults than in children. (healthofchildren.com)
  • Marfan syndrome by itself does not affect a child's intelligence or ability to learn. (healthofchildren.com)
  • Marfan syndrome affects males and females equally, and appears to be distributed equally among all races and ethnic groups. (healthofchildren.com)
  • Marfan syndrome is sometimes called arachnodactyly, which means 'spider-like fingers' in Greek, since one of the characteristic signs of the disease is disproportionately long fingers and toes. (healthofchildren.com)
  • It is estimated that one person in every 3000-5000 has Marfan syndrome, or about 50,000 people in the United States. (healthofchildren.com)
  • Marfan syndrome is one of the more common inheritable disorders. (healthofchildren.com)
  • Marfan syndrome is caused by a single gene for fibrillin on chromosome 15, which is inherited in most cases from an affected parent. (healthofchildren.com)
  • Another important genetic characteristic of Marfan syndrome is variable expression. (healthofchildren.com)
  • This is the most serious potential complication of Marfan syndrome. (healthofchildren.com)


  • One of the most common genetic conditions that affect males is klinefelter syndrome, which is usually the result of an extra copy of the X chromosome in each cell. (epharmapedia.com)
  • When an extra sex chromosome is inherited from one of the parents during the formation of the embryo, Klinefelter syndrome occurs, which happens entirely by chance because it is a random occurrence. (epharmapedia.com)


  • The signs and symptoms of this syndrome vary. (epharmapedia.com)
  • Most of the time, this condition goes undiagnosed until adulthood, and many people with this syndrome have only a few noticeable symptoms. (epharmapedia.com)


  • Having a family history of Klinefelter syndrome or having an older mother at birth won't make a person more susceptible to this disorder unlike other chromosomal disorders, such as Down syndrome. (epharmapedia.com)


  • The syndrome is an autosomal dominant disorder, which means that someone who has it has a 50 percent chance of passing it on to any offspring. (healthofchildren.com)


  • Although new procedures are making it possible for men with this syndrome to father children, however, most men with Klinedelter syndrome are infertile. (epharmapedia.com)
  • Although a person will still need treatment for the condition, however, he probably won't have children in case he has Klinefelter syndrome. (epharmapedia.com)


  • A number of conditions that need treatment including Klinefelter syndrome could have delays in growth and development as their initial sign or symptom. (epharmapedia.com)


  • Usually, the effects of this syndrome vary from one person to another. (epharmapedia.com)


  • Klinefelter syndrome has been linked to learning and language problems in some cases. (epharmapedia.com)


  • This syndrome may not show any noticeable signs and syndromes at first. (epharmapedia.com)