Inferiority Complex:

An inferiority complex is a consistent feeling of inadequacy, when a person believes they’re deficient compared to others, according to Alfred Adler. It may stem from childhood (like being consistently compared unfavorably to a sibling), physical and mental limitations, or experiences of lower social status (like being treated unfavorably by peers) — either real or imagined. Those with an inferiority complex may overcompensate. One example is someone feeling inadequate because they’re shorter than average — also known as a Napoleon complex — due to “heightism.” They may wear special shoes to make themself appear taller or surround themselves with individuals who are even shorter than they are. In the extreme, it becomes a neurosis. Or it may cause an individual to act out, with behavior ranging from attention-seeking to excessive competitiveness and aggression. Also see Superiority Complex