Which personality disorder is characterized by a pervasive pattern of social and interpersonal limitations, resulting in social isolation?

Schizotypal Personality Disorder is characterized by a pervasive pattern of social and interpersonal limitations, which often leads to significant social isolation. Individuals with this disorder may experience discomfort in close relationships, have distortions in thinking or perception, and exhibit eccentric behavior. These features contribute to their difficulty in forming and maintaining social connections, making them more likely to isolate themselves from others.

The disorder involves not just the avoidance of social interactions but also abnormal thoughts and behaviors that further hinder social engagement. For instance, individuals might have peculiar beliefs or engage in odd behaviors that make social interactions awkward or uncomfortable. This results in a sense of detachment that fosters a lifestyle of isolation.

In contrast, the other personality disorders listed are associated with different patterns. Paranoid Personality Disorder involves distrust and suspicion of others but does not necessarily lead to the same degree of social isolation as seen in schizotypal disorder. Histrionic Personality Disorder is marked by attention-seeking behaviors and a desire for engagement rather than isolation. Antisocial Personality Disorder is characterized by disregard for others' rights and often involves engaging in manipulative or harmful behavior rather than social withdrawal. Thus, schizotypal personality disorder specifically highlights the combination of social limitations and isolation, making it the correct answer.