(BPD), a common illness affecting almost 6% of adults.  Sometimes referred to as "Emotional Dysregulation," people with BPD have problems regulating their emotions and thoughts which can lead to severe, unstable mood swings. They may also demonstrate impulsive behavior, have a poor self-image and have a history of unstable relationships. Often referred to as "splitting", someone with BPD may idealize a person one day, "He's everything I ever wanted!" and devalue them the next, "I hate him."

  

People who have BPD feel emotions intensely and for long periods of time. According to the NEABPD, one area the current research is focused on is how individuals with this illness have an inability to calm themselves after a stressful or emotional situation. Self-harm, such as cutting, suicide threats and attempts are tragically very common for people with BPD.

  

In a 2007 study funded by the National Institute for Mental Health (NIMH), 85% of people with BPD also suffer from another mental illness such as major depression, substance abuse, bipolar illness and self-injury. As a result, many people are not treated for BPD and the symptoms of self-harm, uncontrollable anger, irritability and intense insecurity continue in spite of medication changes and hospitalizations. 

  

Because both are mood disorders and the symptoms overlap, it is common for someone with BPD to be misdiagnosed with bipolar illness; however, there are important differences between these disorders. One difference is that with bipolar illness the mood changes generally last weeks or more.  With BPD, the mood changes are much quicker, often fluctuating within a 24-hour period.

  

According to the NEABPD, those who seek treatment and remain actively engaged often respond well and find their lives dramatically improved. Dialectical Behavior Therapy developed by Marsha Linehan specifically to treat BPD, is the most common form of treatment and involves individual skill training and group therapy.