klinefelter syndrome

What is it?

How is it passed on?

• An X and an X are not separated from the egg.
• This yields a XXY 23rd chromosome.                                   
• It is not inherited and can only be triggered sexually    

Who is affected?

• Affects 1 in 500 to 1,000 newborn males
• Only boys can be affected

Symptoms

• Infertility is the most common symptom
• Narrower shoulders and wider hips
• Breast growth and reduced mussel tone
• Weaker bones and lower testosterone levels
• Trouble with learning or language

Treatments

• Injections/pills for testosterone can be taken
• Surgery is a way to remove access breast tissue 
• Speech and Behavioral theory
• Treatment f0r infertility (rare)
• Androgen therapy, which reproduces hormones

Extra Facts

• One of the most common disorders
• Is named for Dr. Harry Klinefelter
• It's most common in Australia
• More rarely, boys could have 48,XXXY or 49,XXXXY
• Many men with the disorder are never diagnosed