Borderline Personality Disorder is largely an excuse used by people with learned thinking,bad coping strategies and occasionally a poor upbringing.

Many people with bPD use the label as an excuse for their behavior which is in turn life destroying for other people.
They will blame it on everything apart from themselves.

Some are dangerously jealous towards others,especially those whom are highly vulnerable.
They are incredibly good at lying,and if found out they will attempt to libel,blackmail and manipulate their way out.

They are impossible to trust as they lie about themselves so often-making up disabilities and terminal illnesses to get attention and sympathy,to attract it away from those who genuinely suffer with what they're faking.

However,some bPDers can also be viewed in a positive light as they do try to help themselves,and they are not dangerous to others anymore than the rest of the population,it's the dangerous highly exploitive and abusive ones who should be banned by the courts from using the internet and be monitored in the community,until they accept help and are stabilised.

A short version of the definition of BPD:

In general, people with BPD feel worthless, empty, moody, needy, depressed, and have difficulty managing their emotions. They have trouble with boundaries--both their own and respecting others. They are looking for that all-loving "other" who will provide the unconditional love they cannot give themselves.

BPs often act inconsistently, act impulsively in ways they later regret, see other as either all good or all bad, and base their beliefs on feelings instead of facts. Borderlines are people in pain.

BPs commonly manage their intense pain in two ways: they act in or act out. BPs who act in may mutilate themselves, make suicide attempts, express self-hate, or seek outpatient or inpatient therapy.

Other BPs manage their pain by trying to foist it on others. They blame loved ones for all their problems, criticize, make unfair accusations, act emotionally or physically abusive, put others in no-won situations, and use emotional blackmail to get the love they need.

A longer, clinical definition of BPD used by clinicians:

The DSM-IV diagnostic criteria for borderline personality disorder reads as follows:

A pervasive pattern of instability of interpersonal relationships, self-image, and affects moods, and marked impulsivity beginning by early adulthood and present in a variety of contexts, as indicated by five (or...

A mental illness where a person cannot control their own emotions.

This means that you feel like shit for literally no reason, and you lack the ability to stop it.

Naturally, this results in the afflicted individual engaging in whatever behaviors they find necessary to alleviate their pain.

This, in turn, makes them appear crazy to the outside world.

Borderlines are notoriously frustrating to work with. The thing that people seem to forget is that if they are frustrated with us, we are infinitely more frustrated with ourselves.

Treatment is available. The vast majority of borderlines recover with Dialectical Behavior Therapy (DBT).

Abbreviated BPD.
Commonly comorbid with depression and anxiety.

A condition where one is not broken, but forever in need of being fixed.

And there is nothing anyone can ever do.

You will always feel this way.

A mental illness that may seem similar to bipolar disorder. Being friends/family with someone with this personality disorder is incredibly draining. One minute they are upbeat, happy and sociable and the next minute they can be angry, depressed, standoffish, insecure, unpredictable and lethargic for no apparent reason. They tend to engage in self-harming acts, such as: self-mutilation, drinking too much, engaging in promiscuous sex, etc.

They can also be 2-faced even to their closest loved ones and lie, lie, LIE til they die! They'll convince themselves of their own lies, no matter how outlandish, in order to avoid facing the ugly truth about themselves. Unfortunately, they cope quite comfortably with living in denial. Best to avoid them like the plague; the effort put into trying to help someone like this will not pay off in a rewarding friendship or relationship, just one with drama, deception and lies over and over again. This even includes people that are medicated.

They are also generally confused about their sense of identity, so they will often rip off other people's styles, looks, ideas, lifestyle and opinions in order to imitate them without admitting they are, and it's really annoying. They know how to manipulate people to their advantage and milk other people's emotions, using tears and emotional breakdowns.

Can you say baggage?

an excuse for grown-ups to act emo.

A bullshit label that is slapped on to undeserving individuals when loved ones and therapists don't know how to deal with them. Behaviors that can cause you to be burdened with this label include: being sensitive, cutting, eating disorders, strong emotions, throwing tantrums, being suicidal, and just being a normal teenager. My sister's boyfriend told me that most people who truely have this are locked away in a nutward. Personally, I refer to this as borderline bullshit disorder because it is just how it sounds, complete bullshit.