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Turner Syndrome

Turner Syndrome – Features & Treatment |  SingHealth

Turner Syndrome - What is it for


What is Turner syndrome?

Turner syndrome (TS) is a chromosomal condition that describes girls and women with common features, physical traits and medical conditions that are caused by the complete or partial absence of one X chromosome.

Typically, females have 46 chromosomes which include two X chromosomes, while males have one X and one Y chromosome.

A female normally has two X chromosomes but women with Turner syndrome, lack or have a partial X chromosome | SingHealth

How common is Turner syndrome?

It is estimated that TS occurs in approximately one in 2,000 live female births.

What are the different types of Turner syndrome?

Girls who are missing one complete X chromosome have what is called monosomy X, often referred to as 'classic TS'.

Others are missing only a part of the second X chromosome, or have some structural rearrangements of the chromosome.

Girls who have a missing or rearranged chromosome in some but not all cells of the body have a mosaic karyotype.


Karyotype showing classic TS

Karyotype showing classic Turner syndrome | SingHealth


Turner Syndrome - How to prevent?

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