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In psychoanalysis, decathexis is the withdrawal of cathexis from an idea or instinctual object.[1]
Decathexis is the process of dis-investment of mental or emotional energy in a person, object, or idea.[2]
In narcissistic neurosis, cathexis is withdrawn from external instinctual objects (or rather their unconscious representations)[3] and turned on the ego – a process Freud highlighted in the Schreber case, and linked to the subject's ensuing megalomania.[4]
A similar decathexis of energy has been linked to the emergence of symptoms of hypochondriasis,[5] as well as of melancholia.[6]
André Green saw decathexis as the product of the death drive, blanking out the possibility of thinking by a process of what he called de-objectilizing.[7]
Decathexis of the lost person in grief was seen as a regular part of the mourning process by Freud, although later analysts have argued that such decathexis was rather the result of inhibited or partial mourning, not of successful mourning.[8]