Be careful with this, I'm pretty sure there was a UWorld question or a question from one of the big 3 qbanks or Boards and Beyond that said you might not get 5 SIGECAPS, so don't bother counting. If there is anhedonia and it sounds likes depression for more than 2weeks, it's MDD.
@Lannister UWorld is good at hammering the tiny differences between all the psych stuff. I'm crap at it too, so Im going to do some blocks of just pysch the last week of dedicated. The NBMEs havent had too many psych questions and they have been more clear than qbanks questions for me at least