<unk> , or 'depression with<unk>  features'  is a subtype of depression characterized by the inability to find pleasure in positive things combined with physical agitation, insomnia, or decreased appetite.  Roughly 10% of people with depression suffer from<unk> .
Melancholic depression
Clinical depression
Depression 
Psychotic depression
Melancholia
Situational depression
Atypical depression
Post stroke depression