There is usually little difference between dysthymia and MDD for me, it is just a matter of degree.

Currently, I am bouncing between mild and major depression, sometimes several times during a single day, I don't know if there is a term for that.

It is different than it used to be, now that psychosis is part of my depression

A bad bout of depression for me now consists of paranoia, feeling massive guilt over nothing, off the charts anxiety, obsessing over non-problems, seeing and hearing things that aren't there, along with the normal stuff like feeling hopeless,little motivation, suicidal ideation, lack of concentration, difficulty in taking care of myself, etc. Even when am having a minor depressive episode all of the above are present, it is just not quite as overwhelming.