Narcissism

Sigmund Freud identified narcissism as a stage or a socio-pathology, naming the phenomenon after the figure of Narcissus in Greek mythology.

Extreme narcissism, or narcissistic personality disorder, may exemplify those types of mental affliction which "infect" other people near the sufferer and spread as a memetic world view.

One could characterise extreme nationalism, jingoism or even chauvinism as collective narcissisms.

See also Inverted narcissists, Narcissistic personality disorder, Narcissistic Personality Disorder, Pathological narcissism

some of which are to be merged.