DBT spread the way good treatments often do: someone noticed that a therapy built for one problem was really treating a process underneath it, and that the same process turned up elsewhere. The common thread is emotion dysregulation, not a single diagnosis.
DBT is used first and foremost for borderline personality disorder and chronic suicidality and self-harm, and then, in adapted forms, for eating disorders, substance use, adolescent self-harm, PTSD, and treatment-resistant depression. Its evidence is strongest in its original population and more variable elsewhere. What links these uses is a shared core problem of intense, poorly regulated emotion, which is what the DBT skills are designed to address.
The primary use: borderline personality disorder
DBT was created for borderline personality disorder, and this remains where it is best supported. The disorder is defined by instability: rapidly shifting emotions, stormy relationships, an unsteady sense of self, and impulsive behaviour that often includes self-harm. Before DBT, many clinicians regarded it as barely treatable and the people who had it as difficult or untreatable, a stance the biosocial theory was written partly to correct.
DBT reframed the disorder as a problem of emotion dysregulation that could be treated with skills, and the results changed the field. Trials found that DBT reduced self-harm, suicide attempts, and hospital admissions, and it is now named in clinical guidance as an evidence-based option. The effectiveness page examines those findings in detail.
Chronic suicidality and self-harm
Cutting across diagnoses, DBT's most distinctive strength is with recurrent self-harm and chronic suicidal behaviour. This was the problem Linehan set out to solve, and the treatment is structured around it: its target hierarchy places life-threatening behaviour first, above everything else, and phone coaching exists so that a person on the edge of a crisis can reach a skill in real time.
The evidence that DBT reduces self-harm and suicide attempts is among the most robust in the psychotherapy literature, and it holds even when the person does not have a formal borderline diagnosis. For this reason DBT is often chosen specifically for people whose lives are being threatened by their own behaviour, regardless of the label attached to it.
The adaptations
Beyond its original use, DBT has been reshaped for several other conditions in which emotion dysregulation plays a central part. These adaptations keep the core skills but adjust the structure, targets, and additions to fit the problem.
Binge eating and bulimia
Adapted DBT treats binge eating and bulimia as attempts to escape unbearable emotion. It targets the emotional triggers for bingeing and purging and teaches distress tolerance and emotion regulation as alternatives, with promising but more limited evidence than in BPD.
DBT for substance use
A version developed for people with both emotion dysregulation and addiction adds skills aimed at abstinence and relapse, and treats substance use as high on the target hierarchy. It is used most for people who have not responded to standard addiction treatment.
DBT for adolescents
Adapted for young people who self-harm, it shortens the programme, involves parents in a multi-family skills group, and adds a module on walking the middle path between the extremes common in family conflict. It is one of the stronger options for reducing teenage self-harm.
PTSD
A protocol combining DBT with prolonged exposure helps people who are too emotionally dysregulated to tolerate trauma-focused therapy on its own. DBT skills first build the capacity to face trauma memories safely, then exposure work follows.
Treatment-resistant depression
DBT skills have been tried for depression that has not responded to other treatments, particularly in older adults and where chronic emotion dysregulation is present. The evidence here is exploratory rather than settled.
DBT skills groups alone
Increasingly, the skills group is offered on its own, without the full four-component programme, as a lighter and more scalable intervention for emotion regulation across many settings. Whether skills alone match full DBT is an open question.
What ties these uses together
The spread of DBT is not random. Each application shares an underlying process rather than a surface diagnosis, which is what makes the same skills relevant across such different problems.
This transdiagnostic logic is DBT's great strength and also a caution. The fact that the skills are useful across conditions does not mean the full evidence base transfers with them. A treatment can be well supported for one problem and only tentatively studied for another, and honest sources keep those apart.
Where DBT is not the answer
DBT is powerful for what it was built for, but it is not a universal therapy, and treating it as one does a disservice to both patients and the method.
If DBT helps so many conditions, it must be right for almost anyone.
DBT is intensive, demanding, and specifically designed around emotion dysregulation and harmful behaviour. For a straightforward phobia, mild depression, or a problem better suited to a focused approach, a lighter or more targeted therapy is usually the better fit. DBT's breadth reflects a shared underlying process, not a claim to treat everything, and matching a person to the right therapy matters as much as the therapy itself.
Where to go next
Knowing where DBT is applied naturally raises the question of how well it works in each of them. The next pages weigh the evidence.
Sources
- Linehan MM. Cognitive-Behavioral Treatment of Borderline Personality Disorder. Guilford Press. 1993.
- National Institute for Health and Care Excellence (NICE). Borderline personality disorder: recognition and management. CG78. 2009.
- Miller AL, Rathus JH, Linehan MM. Dialectical Behavior Therapy with Suicidal Adolescents. Guilford Press. 2007.
This page is educational and is not medical advice. It does not diagnose any condition or recommend a treatment for any individual. If you are considering DBT, speak with a qualified professional about whether it fits your situation.