Narcissistic collapseNarcissistic collapse Narcissistic collapse or decompensation refers to a state a narcissist is in when reacting to a lack of narcissistic supply, humiliation, or failure. or decompensation refers to a state a narcissist is in when reacting to a lack of narcissistic supplyNarcissistic supply A narcissist is in a constant need for narcissistic supply which can be anything that makes the narcissist feel valuable, important, and happy., humiliation, or failure.