Hum Mol Genet. June 20, At periodic visits, a doctor can monitor a boy's development for delays, social and language disabilities, or health problems and treat these promptly. For the rest of those diagnosed after birth, around half are diagnosed during childhood or adolescence after developmental delays are observed.
Overview Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. This sex chromosome aneuploidy is not characterized by distinct physical features and, because there does not appear to be recognizable pattern of neurodevelopment or behavioral characteristics, the use of the term syndrome may be inappropriate.
New York: Wiley-Liss.
Nieschlag E. As babies and children, XXY males may have weaker muscles and reduced strength. Boys and men with mosaic Klinefelter syndrome may have milder signs and symptoms than those with the extra X chromosome in all of their cells, depending on what proportion of cells have the additional chromosome.
Retrieved 27 February Dev Med Child Neurol. Advertising revenue supports our not-for-profit mission. ICD - 10 : Q Stewart, Donald A. New York: Aspect.
Price, William H. The effects of Klinefelter syndrome vary, and not everyone has the same signs and symptoms. The use of behavioral therapy can mitigate any language disorders, difficulties at school, and socialization. They had predicted that extra sex chromosome xxy in Belleville amount of information that had to be shared prior to screening was so extensive and complex that true informed consent was impossible to obtain at that point.
The cognitive phenotype in Klinefelter syndrome: a review of the literature including genetic and hormonal factors. Klinefelter syndrome is a chromosomal condition in boys and men that can affect physical and intellectual development. November 26, Experimentation with human beings; the authority of the investigator, subject, professions, and state in the human experimentation process.
I have never felt such a despair such as the one I felt today. Anywho, anyone have resources for compression shirts I could wear in the meantime? When we started in feelings about informed consent were very different.
Usually, a person has 46 chromosomes in each cell, divided into 23 pairs, which includes two sex chromosomes. Expository science: Forms and functions of popularisation.