People with personality disorders, especially BPD tend to deny their problem and so for that reason they have tended not to go for treatment and have just been considered problemed people Now with increased awareness, outside pressure from friends, teachers, and relatives have pressured these people to seek treatment and thus an increase in the frequency of the diagnosis For a long time there were no effective treatments. However in recent years an effective treatment has been developed out of the University of Washington It is called Dialectical Behavioral Therapy-DBT. I hope this answer has been helpful to you.
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