Turner syndrome is a genetic disorderthat affects about 1 in every 2,000 baby girls and only affects females.

A girl with Turner syndrome only has one normal X sex chromosome, rather than the usual two (XX).

This chromosome variation happens randomly when the baby is conceived in the womb. It is not linked to the mother's age.

Almost all girls with Turner syndrome:

  • are shorter than average
  • have underdeveloped ovaries (female reproductive organs), resulting in a lack of monthly periods and infertility

As height and sexual development are the two main characteristics, Turner syndrome may not be diagnosed until a girl fails to show sexual development associated with puberty, usually between the ages of8 and 14 years.

Other characteristics of Turner syndrome can vary significantly between individuals.

However, it is usually possible to lead a relatively normal and healthy life.

Life expectancy is slightly reduced, but it can be improved with regular health checks to identify and treat potential problems at an early stage.

This helps scientists look for better ways to prevent and treat this condition. You can opt out of the register at any time.

Find out more about the register.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 30 Nov 2016