Klinefelter+Syndrome

Klinefelter Syndrome is caused by a chromosome aneuploidy. It effects males by giving them an extra X chromosome(XXY). The effects are reduced fertility and small testicals. IT effects about 1 of every 500 men.

Some symptoms of Klinefelter Syndrome are increased breast tissue and breast cancer ,small penis and testicals and a low testosterone level."As babies, many XXY males have weak muscles and reduced strength. They may sit up, crawl, and walk later than other infants. After about age four, XXY males tend to be taller and may have less muscle control and coordination than other boys their age.

As XXY males enter puberty, they often don’t make as much testosterone as other boys. This can lead to a taller, less muscular body, less facial and body hair, and broader hips than other boys. As teens, XXY males may have larger breasts, weaker bones, and a lower energy level than other boys.

Boys with Klinefelter syndrome may have learning disabilities, hearing problems, and difficulty with speech development. Symptoms of trouble hearing is that you get a lot of ear infections this can impair hearing and speech development. http://www.nlm.nih.gov/MEDLINEPLUS/ency/article/000382.htm

By adulthood, XXY males look similar to males without the condition, although they are often taller. They are also more likely than other men to have certain health problems, such as autoimmune disorders, breast cancer, vein diseases, osteoporosis, and tooth decay.

XXY males can have normal sex lives, but they usually make little or no sperm. Between 95 percent and 99 percent of XXY males are [|infertile] because their bodies don’t make a lot of sperm."(http://www.nichd.nih.gov/health/topics/klinefelter_syndrome.cfm)

This disease cant be inherited it's random during the formation of reproductive cells. It's an error in cell division called nondisjunction and that can result in reproductive cells having abnormal number of chromosomes.

Klinefelter Syndrome is irreversible, but its symptoms can be altered or treated in a number of ways. Including taking testosterone and breast reduction treatments.