Turner syndrome is a condition in which a girl or woman is partially or completely missing an X chromosome. It can cause infertility and heart problems and alter a female’s appearance. The NICHD plays a leading role in advancing research on Turner syndrome by supporting the investigation of its physical and emotional effects as well as potential therapies.

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Common Name
Medical or Scientific Names
- Turner syndrome
- Monosomy X
- 45,X
- Ullrich-Turner syndrome
- TS
- Gonadal dysgenesis