Inferiority complex
In psychology, an inferiority complex is a consistent feeling of inadequacy, often resulting in the belief that one is in some way deficient, or inferior, to others. According to Alfred Adler, a feeling of inferiority may be brought about by upbringing as a child (for example, being consistently compared unfavorably to a sibling), physical and mental limitations, or experiences of lower social status (for example, being treated unfavorably by one's peers).