Personality is the sum of enduring patterns of behavior that distinguish an individual from others, encompassing their ways of perceiving themselves and their environment, relating to others, and thinking. Personality traits are the structural components of these patterns, exhibited across various social and personal contexts. If these traits become inflexible and maladaptive, leading to significant functional impairment in daily life or causing personal distress, a personality disorder may be indicated. A key characteristic of a personality disorder is a pervasive pattern of inner experience and behavior that deviates significantly from cultural expectations. The symptoms of these disorders typically emerge in adolescence or early adulthood and can predispose individuals to the development of many other psychiatric conditions.