The Transgender Dictionary

DIRECTORY W.I.P.!!! # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z RESOURCES BY COUNTRY MISCELLANEOUS

Turner Syndrome

(also: Monosomy X, Ovarian Hypoplasia Syndrome, XO Syndrome)

Table of Contents

Introduction

Turner syndrome is an intersex variation. As with anyone with any intersex variation, those with it may identify as cisgender, transgender, or neither. As turner syndrome only affects those who are A.F.A.B., most people with turner syndrome identify as cisgender women.

Diagnosis of turner syndrome typically occurs prenatally, during infancy, or during early childhood. For those with milder symptoms, diagnosis may not occur until the individual is a teenager or young adult.

If you come across any words or terms with meanings for which you are not familiar; either click the hyperlink to be brought to a relevant explanation of the topic, or use the alphabet menu buttons at the top to find further context.

General Information

Turner Syndrome is an intersex variation wherein a person is born with a 45X chromosome pattern (sometimes known as 45XO) instead of the typical 46XX. This means that all or part of one of the X chromosomes is damaged or missing.

Someone with Turner Syndrome can develop variations in their other sex characteristics as a result of their chromosome pattern; such as smaller-than-typical ovaries that may stop producing hormones at a younger age than typical. They may not menstruate or experience pubertal changes. The body of someone with Turner Syndrome may also have some specific physical characteristics, such as a broad chest, a webbed neck, short stature, and medical problems with their heart.

Flags

Turner Syndrome Flag

The turner syndrome flag was created in June of 2025 by tumblr user "gonyadaldysgenesis" to represent and unite those with this intersex variation. The color orange was chosen to represent solidarity and warmth. The color pink was chosen to represent self love and care. The color cyan was chosen to represent diversity. The color yellow was chosen to represent joy.

Ovarian Hypoplasia Flag

Original Turner Syndrome Flag

Mosaic Turner Syndrome

Mosaic Turner Syndrome can occur when some of a person's cells has 45X chromosomes, while other cells have a different pattern, such as 46XX or 46XY. People with Mosaic Turner Syndrome and 45X/46XX chromosomes may have fewer noticable signs of this intersex variation than people who have a 45X chromosome pattern in all of their cells. For example, someone is more likely to go through the changes of a typical estrogen-based puberty and to start menstruating if they have a 45X/46XX chromosome pattern.

Someone who has a 45X/46XY chromosome pattern may be born with testicular tissue that produces hormones, and they often go through a typical testosterone-based puberty if they do. Someone with this variation of Turner Syndrome may be born with a penis & scrotum, and without any visible variations. They may also have genital differences such as a micropenis or hypospadias. They may also have a typical-appearing vulva and clitoris.

The resources below have been provided for education, information sourcing, and entertainment purposes. The views expressed in these videos, websites, etc, do not inherently reflect those of The Transgender Dictionary. These resources are not sponsored, nor endorsed.

Additional Resources

See also the mosaicism and intersex pages.