I suffer from depression. I have the whole works, sui thoughts, SH, negative thinking, my house is a pig sty as I can't motivate myself or have the energy to clean it, I also have anxiety, dissociate, come out of the supermarket and sit in my car and cry as it is so overwhelming for me, I struggle to maintain any social relationships. But I somehow manage to hide it from everyone - I have sat in the bathroom at work head in my hands trying to contain myself and focus on my work.
I guess the point I am trying to make is that I get that some people use these labels as a way of describing themselves in a light hearted way "I'm a little bipolar today" sort of comment and that may be demeaning to those who have that diagnosis - but for some just because they look OK doesn't mean that underneath everything is OK.