ELI5: Explain Like I'm 5

Testicular dysgenesis syndrome

Testicular dysgenesis syndrome is a big phrase that describes a problem that can happen to boys before they are born. It's really important because it can cause problems with how their bodies develop, especially their testicles.

Now, boys have two testicles, which is where their sperm grow and they also make hormones like testosterone that help their body change and grow. But sometimes, when a baby boy is forming in his mom's tummy, something goes wrong and his testicles don't grow like they should. This can cause a bunch of different problems because the testicles are super important!

One of the big problems is that boys with testicular dysgenesis syndrome might not make enough hormones. That means that they might not grow as tall as they should or they might not develop muscles like other boys their age. They might even have trouble with things like growing facial hair or having a deep voice like other guys.

Another really important problem with testicular dysgenesis syndrome is that it can increase their chances of getting cancer in their testicles. That's really scary, but the good news is that doctors are really good at catching it early and treating it.

So basically, testicular dysgenesis syndrome is a big problem that can make it harder for boys to develop normally. But if they get good medical care, they can still lead happy, healthy lives!