XY Disorders of Sex Development (DSD)(XY DSD)
Also known as: XY sex reversal · XY disorder of sex development · male pseudohermaphroditism · gonadal dysgenesis in dogs · XY differences of sex development · …
Overview
What it is
This is a genetic developmental disorder affecting the reproductive system, where a dog with male chromosomes (XY) develops atypical, female, or ambiguous sexual organs. It occurs when the normal formation of the gonads (the organs that make reproductive cells, like testes or ovaries) and external genitalia is disrupted during embryonic development.
How it presents
Owners typically notice signs during puppyhood or puberty, such as unusual-looking external genitalia, undescended testicles, or a female dog that never goes into heat. In many cases, the condition is only discovered incidentally by a veterinarian during a routine neutering procedure.
Treatment
The condition is managed with a one-time surgical removal of the internal gonads (neutering) to prevent future tumor development, which typically costs between 600 and 2500 EUR. Following surgery, affected dogs generally live a normal, healthy life without the need for lifelong medication.
How it's tested
Affected breeds
Treatment cost
Estimated range of typical treatment costs. Actual costs depend on severity, clinic and region.
Frequently asked questions
What is XY Disorders of Sex Development (DSD)?
This is a genetic developmental disorder affecting the reproductive system, where a dog with male chromosomes (XY) develops atypical, female, or ambiguous sexual organs. It occurs when the normal formation of the gonads (the organs that make reproductive cells, like testes or ovaries) and external genitalia is disrupted during embryonic development.
How is XY Disorders of Sex Development (DSD) tested?
Various clinical and genetic tests are used depending on the breed and presentation.
Which breeds are most affected?
This condition isn't tied to a specific breed in our database.