Physical gender dysphoria isn't different to dysmorphia. People aren't mistaking one for the other. Rather they are the same thing.

It's very difficult to understand unless you've experienced both, but they are not the same. I have really bad dysphoria over the mental changes which aren't even a body part.

The belief that you are meant to be the other sex comes first and causes the physical side to take hold, not the other way round.

It can cause dysmorphia for sure, but not the rest of it. And why would that belief be sparked in the first place in a properly functioning human?

There are lots of roads to inducing gender dysphoria, social issues, puberty, fetish, internalised homophobia, abuse.

What about the people who have had it since they were children? And I don't mean those confused trendy kids, I mean people who usually only figure it out later, if ever, and it doesn't go away.

The feelings persisting after puberty just means you have developed a real mental health issue and likely have a personality disorder or autism driving it.

And why do you think these are precisely the disorders which are linked to messed up hormones in brain development?

It's all still real gender dysphoria once you have it.

Then why do people detrans?

There is no one true innate gender dysphoria, that simply doesn't exist.

Then why not take a bunch of testosterone? What are you afraid of? Afraid you might not like what it'll do?