Klinefelter Syndrome

Question 1

Are males or females affected by Klinefelter Syndrome?

Answer 1

males

Question 2

What does the genetic analysis of Klinefelter syndrome show?

Answer 2

Basic abnormality is the presence of an extra X chromosome.
Males with Klinefelter syndrome have 47 chromosomes.
Genetic analysis shows XXY instead of XY.

Question 3

Which syndrome (Klinefelter or Turner) is the most common of all sex chromosome abnormalities?

Answer 3

Klinefelter syndrome

Question 4

When is Klinefelter syndrome usually diagnosed?

Answer 4

Often not diagnosed until puberty but sometimes not diagnosed until men are not able to have children

Question 5

Is there reduced secondary sex characteristics?

Answer 5

YES

***microorchidism associated with otherwise normal genitalia, lack of sperm and sterility often seen.

Question 6

What are some common findings with Klinefelter syndrome?

Answer 6

normal to borderline IQ
diminished facial hair
lack of libido