What personality disorder is characterized by a relentless distrust and suspiciousness of others?

The personality disorder characterized by relentless distrust and suspiciousness of others is indeed paranoid personality disorder. Individuals with this disorder often interpret the actions and intentions of others as malevolent or threatening, even without sufficient evidence to support such beliefs. They may perceive that others are plotting against them or trying to deceive them, leading to difficulties in forming and maintaining relationships.

This pervasive suspicion can significantly affect their social interactions and ability to collaborate with others. People with paranoid personality disorder are also typically very sensitive to criticism and may harbor resentment or respond with hostility when they feel attacked or slighted.

The other personality disorders mentioned have distinct features: for example, schizotypal personality disorder is characterized by odd beliefs or magical thinking, borderline personality disorder involves instability in emotions, self-image, and relationships, and antisocial personality disorder is marked by a disregard for others' rights and a lack of empathy. Each has its own specific patterns of thought and behavior, highlighting the unique characteristics that differentiate paranoid personality disorder from the others.