Egomania is an obsessive preoccupation with one's self and applies to someone who follows their own ungoverned impulses and is possessed by delusions of personal greatness and feels a lack of appreciation. Someone suffering from this extreme egocentric focus is an egomaniac. The condition is psychologically abnormal.

The term egomania is often used by laypersons in a pejorative fashion to describe an individual who is intolerably self-centred. The clinical condition that most resembles the popular conception of egomania is narcissistic personality disorder.

Egomania was brought into polemical prominence at the close of the 19th century by Max Nordau, the first critic who perceived the centrality of the concept of egoism for an understanding of Modernism...[with] his wholesale attacks on the ideology of "egomania"'. Nordau distinguished egoism - as 'a lack of amiability....The egoist is quite able to look after himself in life' - from the 'ego-maniac...who does not see things as they are, does not understand the world, and cannot take up a right attitude towards it'.

Udo Kier (born Udo Kierspe; 14 October 1944) is a German actor, known primarily for his work in horror and exploitation movies.

Kier was born in Cologne. The hospital where he was born was bombed moments after his birth. His father was absent during most of his childhood. Kier moved to Britain at the age of eighteen, in 1962.

Udo Kier began his acting career as a protégé of film director Rainer Werner Fassbinder. He has starred in many vampire movies, such as Blood for Dracula, produced by Andy Warhol and directed by Paul Morrissey (1974), Blade (1998), Modern Vampires (1998) and Shadow of the Vampire (2000), both as vampire and human. He has also been in most of Lars von Trier's movies since 1987's Epidemic (with the exceptions of The Idiots, The Boss of it All and Antichrist), and is the godfather of von Trier's daughter Agnes.

Well known mainstream film appearances were in the Pamela Anderson movie, Barb Wire, and as an extremely cynical NASA flight surgeon in Armageddon, who finds himself subjected to the rambunctious behavior of the flight crew he is supposed to psychoanalyze, and as Ralphie in the film Johnny Mnemonic. He has also frequently worked with director Christoph Schlingensief.