X and Y Chromosome Abnormalities

Comprehensive Care for Kids With X and Y Chromosome Abnormalities 

The Nemours eXtraordinarY Kids Program offers expert, comprehensive, integrated medical care and support services for children with X and Y chromosome abnormalities (variations of the X and Y chromosomes, which determine a child’s sex — male or female). Normally, a child will be a male if he inherits one X chromosome from his mother and one Y chromosome from his father. A child will be a female if she inherits a double dose of X (one from each parent) and no Y. Sometimes, though, children are born with only one sex chromosome (usually a single X) or with an extra X or Y.

At Nemours, our eXtraordinarY Kids team will give your child a thorough evaluation and create a treatment plan tailored to your child’s medical care, development, academic, social and emotional needs. Our program was created to help families identify needs and resources — and to provide coordinated care, all in one place. Our goal: to help all children reach their full potential.

Conditions we see include:

  • Klinefelter syndrome
  • Turner syndrome 
  • XXX syndrome
  • XYY syndrome