ItIsSoOver posted...
How do you figure? What is the difference?
It's a bit of a cop-out, but mostly the fact that extensive study of the matter has found Gender Dysphoria to be a pretty well-defined disorder of its own, but not racial or species dysphoria. That comes with the caveat that future study may find reason to treat racial/species dysphoria as their own things instead of as symptoms of other disorders, but I can't really form an opinion on anything other than the research as it stands now, so I'm comfortable settling on that assumption but keeping an open mind to future developments.
ItIsSoOver posted...
No stranger than identifying as a different race or sex
Only if the thing you find strange is "deviating from your natural state in any regard," in which case getting a haircut or wearing clothes would be lumped in as being just as strange. You've gotta draw a line somewhere. Where the line is drawn is pretty arbitrary, but I'm pretty comfortable saying that it's weirder to not want to be a human at all than to want to be a human with a couple different variables than you were born with. That's a very significant jump, leaving lots of room for line-drawing.