i have similar problem and i do not know what i have.
i do not understand completely what black and white thinking means.what is it?i feel more like you where i feel too opposite things at the same time most often.not the middle but 2 opposites.
the all or nothing/black and white problem i have is that i want all or nothing.middle feels like nothing so it goes to nothing.sometimes.
i do not think that other people understand it though.i think they see me like nothing is wrong with me.
but to have a disorder you need more than that maybe.i have no clue.i just wanted to post because i related with i feel too opposites at the same time so much. i am no help.
wtf is the middle