There isn't a definitive answer to which personality disorder is the "most conflictual" as each personality disorder presents its own unique challenges and conflicts for the individual and those around them. Moreover, the severity and impact of a personality disorder can vary significantly from person to person.
That being said, some personality disorders are known to be associated with more interpersonal conflicts and difficulties due to their characteristic traits and behaviors. For instance:
Borderline Personality Disorder (BPD): People with BPD often experience intense mood swings, have difficulties regulating emotions, and struggle with unstable self-image and relationships. This can lead to frequent conflicts in personal and professional relationships.
Antisocial Personality Disorder (ASPD): Individuals with ASPD may exhibit a pattern of disregard for the rights and feelings of others, manipulative behavior, and a lack of empathy. These traits can lead to frequent conflicts, legal issues, and difficulties maintaining relationships.
Narcissistic Personality Disorder (NPD): People with NPD tend to have an excessive need for admiration, lack empathy, and often have a grandiose sense of self-importance. These traits can contribute to conflicts in relationships, as they may struggle with valuing others' needs and opinions.
Paranoid Personality Disorder (PPD): Individuals with PPD tend to be excessively distrustful and suspicious of others, which can result in frequent conflicts and difficulties in forming and maintaining relationships.
Histrionic Personality Disorder (HPD): People with HPD often seek attention and approval and may be emotionally volatile. This behavior can lead to conflicts as others may find it challenging to deal with their intense emotions and constant need for attention.
It's important to note that people with personality disorders can benefit from understanding and support. Proper diagnosis and therapy, such as dialectical behavior therapy (DBT) for BPD or cognitive-behavioral therapy (CBT) for other personality disorders, can significantly improve their quality of life and their ability to manage conflicts and maintain healthier relationships. Additionally, people with personality disorders are not inherently "bad" or "dangerous," and it's essential to approach them with empathy and understanding while setting appropriate boundaries.