XXY Adolescence
What is XXY?:
What is XXY?
History
XXY or Ks?
Treatment
Treatment - Part 2
Sexuality & Fertility
XXY Aneuploidies
For Parents
Adolescence
In Conclusion
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Usually, XXYs enter puberty normally without any delay of physical maturity. However, they fail to keep up with their peers as puberty progresses. In teenage XY boys, the testes gradually increase in size from an initial volume of about 2 ml to about 15 ml. In XXYs, the testes remain at 2 ml and cannot produce sufficient quantities of the male hormone testosterone. As a result, many XXY adolescents may tire easily and lack muscle mass, facial or body hair, and other secondary male characteristics. The XXY penis is usually of normal size. XXY boys should begin testosterone treatment as they enter puberty. A regular schedule of HRT should promote the development of secondary male characteristics in the XXY. Improved self-confidence, increased energy, more stable moods, decreased need for excessive sleep, enhanced concentration, and improved social skills are also reported benefits of testosterone treatment. Once again, we must emphasize the needs of the individual and the importance of seeking out a good physician who is either knowledgeable about XXY or is willing to learn with you and to explore possibilities.
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