 My name is Sam Vaknin and I am the author of Malignant Self-Lab, Narcissism Revisit. Borderline Personality Disorder is often diagnosed together, is co-morbid with other personality disorders, most commonly histrionic, narcissistic, and antisocial, or psychopathic. All these four personality disorders form together the cluster B. So cluster B personality disorders often coexist in the same diagnosed patient. The majority of persons diagnosed with these comorbidities of personality disorders are actually women. Women are predominantly the main segment of the histrionic personality disorder population and of the borderline personality disorder population. Borderline personality disorder is a post-traumatic state. It is repeatedly triggered in later life by neglect, abandonment, with holding of sex and intimacy, verbal and psychological abuse, and by life's circumstances, dangers, and chaos. When borderline personality disorder is co-morbid with histrionic personality disorder, such women react by seeking comfort, acceptance, validation, sex, and intimacy from other men. But the co-mobility creates conflicting inner voices in the woman. There are three voices to consider, histrionic voice, the antisocial voice, or psychopathic voice, and the borderline voice. The histrionic voice in such co-morbid women says, Men will make you feel better. Men will help you restore your self-esteem. The psychopathic or antisocial voice in such a woman says, Don't feel guilty about cheating. Don't feel guilty or bad about being a whore. It is fun. You deserve sex. It is not your fault. No one gets hurt if you keep it a secret. Go for it. The borderline voice says, Your sexuality is bad, mad, and dangerous. Don't take it too far, or it will end calamitously. When such a woman with co-morbid histrionic and borderline personality disorder, when such a woman experiences a narcissistic crisis or a narcissistic injury, when such a woman is hurt, humiliated, or frustrated, when her femininity is doubted or challenged, her histrionic side forces her to reach out to men in order to make her feel better and to ameliorate her frustration. Such women fling with men. They use men to self-medicate. Men become a kind of anti-anxiety drug. These women restore their self-esteem and self-confidence. They regulate their le-bye sense of self-worth by having sex or engaging in sexual acts with other men. These women contact men with the intention of having intimacy and sex with them. When this happens, the antisocial or psychopathic voice of the woman legitimizes her histrionic behavior. This is, as I said, don't feel guilty about chicken. Don't feel guilty about being a whore. There's nothing wrong with it. It is fun. You deserve sex. It is not your fault. No one gets hurt if you keep it a secret, and so on, and so forth. Go for it. But at that point, the borderline voice interjects. The woman's borderline aspect feels stressed and panicked by the sheer prospect of imminent sex, when she is faced, when the woman is faced with a man's expectation to have sex with her, and when this woman is also faced with her own sexual desire, she freaks out. Sex is perceived as traumatic. These women perceive sex to be associated with pain and hurt, kind of punishment. The following negative thoughts, negative automatic thoughts, prevail in these women's minds. Sex is dirty. Men are evil, dangerous, one-track minded. They want only sex, and then they will discard you. Sex inevitably results in pain and hurt. You should feel guilty about cheating. You should feel ashamed for being so whorish, etc., etc. These sentences, negative automatic sentences, play again and again in the woman's mind, as her histrionic side pushes her to engage in sex with strangers, and her psychopathic side legitimizes this behavior. So there's a conflict, an inner conflict comprised of two or three conflicting and competing voices. When faced with a prospect of sex, borderline patients panic because of these negative thoughts. The panic sometimes leads to depersonalization. The woman splits from herself. She enters a kind of paralyzing trance. She goes autopilot. She lapses into a dreamlike or nightmarelike state. If such a woman crosses the line and has full-fledged sex, she experiences dissociation. She forgets certain sexual acts that conflict with her values and boundaries, especially so if she finds them enjoyable.