Borderline Personality Disorder is a type of mental health disorder that is marked by various ongoing pattern of self-image, varying moods, difficulty in managing emotions and behaviour which cause problems in functioning of everyday life. It usually begins by early adulthood. These are the types of Borderline Personality Disorder as created by Theodore Millon:

• Discouraged borderline – Individuals suffering from this type tend to be co-dependent, clingy and dejected, but deep inside, they are actually angry.
• Impulsive borderline – They are highly enthusiastic and energetic. They seek thrills and are easily bored and always want to be the center of attraction.
• Petulant borderline – Individuals with such type are unpredictable and irritable. They are impatient and quickly become disillusioned.
• Self-destructive borderline – Individuals with such type are their own enemies and at times, are not even aware of this.

In the United States, a recent study has shown that 1.6% of the population has BPD. 75 per cent of the people that were diagnosed with BPD were women and 70 per cent of people with BPD try to commit suicide at least once in their lifetime. In India, there are more than 10 million cases of BPD per year.