If a female teenager has had trichotillomania (hair pulling), pyromania, and bruising / cutting problems since they were 10 years old ... along with moods shifting within minutes, hours, days .... gets depressed out of nowhere and wants to kill themselves, and then can also get amnic and stay up all night, or have BOTH feelings at once ... manipulative behavior, and everything is either "this way" or "that way" that definitely has many borderline personality disorder features.    From Wordnik.com.  [Yahoo! Answers: Latest Questions] Reference