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in the late 1950's Henry Klinefelter and his coworkers discovered a man who had a extra sex chromosome(XXY) which was common but the symptoms were unusual. The news went around the medical community and hey started calling it the XXY disease or the Klinefelters Syndrome

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The doctor will run a physical exam and ask about symptoms and your health. The main test that doctors run is the Hormone testing which is where they take blood or urine samples and check the hormone levels that might show a sign to the disease. The other test is the Chromosome analysis or the Karyotype test which is where they send a blood sample to a lab and they check the number and shapes of the chromosomes.

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This disease is rare and there are fewer than 200,000 US cases per year. This disease can not be cured but treatments will help. A medical diagnosis is required along with lab test and imaging. Usually you will need Hormone medicine that would help out with the low Testosterone so see a  doctor and get a prescription. There are many specialist that you can see if you are having symptoms of this disease such as a Urologist, Medical geneticist, Endocrinologist, and a PCP(Primary care provider)

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- Heart disease
- lung disease
- breast cancer(most common
-anxiety and depression
- reproductive problems
- dental problems

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Though  the chance of having the Klinefelters disease is random but the main cause is getting an extra X chromosome, however there is one type of the Klinefelters disease in which not all the cells are affected by it which would result in fewer symptoms. The disease is not influenced by the parents though but if the mother is quite old the risk of it is much higher but only by a little bit.

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The symptoms of the Klinefelters syndrome depends on the age but here are some that they all have in common
- taller than average height
- weak muscles
- less facial and body hair
- low energy levels
- spelling, reading, math problems
- weak bones
- enlargement of breast tissue and belly
- low sperm cells

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It's a genetic condition that only affects a male. This syndrome happens when a male receives a extra X chromosome. Although this condition is typically diagnosed before birth or adulthood. This can affect muscle mass, body and facial hair and enlargement of the breast tissue. Males with this condition aren't able to produce much sperm cells so its quite hard for reproduction.