DBT stands for Dialectical Behavioral Therapy. Think of it as a type of Cognitive Behavioral Therapy (CBT), with a heavier emphasis on managing emotions. It was created by a woman named Dr. Marsha Linehan, who herself was diagnosed with Borderline Personality Disorder (BPD). She did not find the treatments of the time helpful for her, so she got a doctorate degree and made her own approach (huge kuddos to her!). Today, research supports DBT as a treatment for many other diagnoses and symptomatology than just BPD. It is a skills based model that basically believes that we all, as humans, need skills to manage the ups and downs of life. The four groups of skills are emotional regulation, distress tolerance, mindfulness, and interpersonal effectiveness.
In my experience as a counselor working with those who have survived various types of trauma, DBT is one way that can help people learn how to manage some of the symptoms and responses to trauma. It does not HEAL the trauma, but it can be one way to help cope with the daily impact of trauma in the body. Skills can be helpful in addition to your individual counseling because they can help you have more ways to manage trauma responses as you work through your experiences in order to heal. At the end of the day, DBT is a set of coping skills that can be very effective!