Even in kids, it kind of pathologizes nonconformity. Though not diagnosed in adults, c'mon, we're still no less disagreeable as adults. Though we accept that this is normal for adults, albeit not something people seem to like, as they start to question if we're "part of their group".
Symptoms
Actively does not follow adults' requests
Angry and resentful of others
Argues with adults
Blames others for own mistakes
Has few or no friends or has lost friends
Is in constant trouble in school
Loses temper
Spiteful or seeks revenge
Touchy or easily annoyed
That being said, were you diagnosed this as a child? And I don't care if you believe it to be a disorder, I don't either, much less and adult one. Are you still this way as an adult? Are you a better adapted version of this?
I was diagnosed, but I still think I was always reasonable and cooperative. I just have a strong mind. I'm better adapted than I was though.