What is DBT?
Dialectical Behavior Therapy (DBT) is a cognitive behavioral treatment that was originally developed to treat chronically suicidal individuals diagnosed with borderline personality disorder (BPD) and it is now recognized as the gold standard psychological treatment for this population. In addition, research has shown that it is effective in treating a wide range of other disorders such as substance dependence, depression, post-traumatic stress disorder (PTSD), and eating disorders.
Source: http://behavioraltech.org/resources/whatisdbt.cfm