title: Melancholia: a reconsideration.
mesh_terms: D002409:Cathexis; D003242:Conscience; D003865:Major Depressive Disorder / Q000209:etiology*; D005619:Freudian Theory; D006167:Guilt; D006801:Humans; D009769:Object Attachment; D011574:Psychoanalytic Theory; D012649:Self Concept; D013475:Superego