WANI Dictionary

Klinefelter syndrome

Klinefelter syndrome is a genetic condition where a male has an extra copy of the X chromosome.

Various adolescent males show few signs of having this condition and may not be aware of symptoms until they reach adulthood. However, infants show several signs including slow motor development, weak muscles, a delay in speaking, and problems at birth with testicles [1].

There is no definitive treatment for this disease, but possible treatments include testosterone therapy to enhance muscle growth.

Also see other chromosomal diseases: poly-X syndrome, Down syndrome, and Turner syndrome.

Definitions in the literature

• Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. Klinefelter syndrome is a genetic condition affecting males, and it often isn't diagnosed until adulthood [1].