Many individuals living with borderline personality disorder (BPD) have experienced childhood trauma, such as abuse or neglect. A significant number of them also meet the criteria for post-traumatic stress disorder (PTSD). However, standard psychotherapies often do not address both conditions at the same time, which can affect treatment outcomes. A research team in Germany developed and validated a 45-week individual psychotherapy that has shown promising results for individuals coping with both BPD and PTSD. It has already been adapted and offered in English-speaking settings such as Toronto and Boston. This study aims to adapt this therapy into French in Quebec. Over 24 months, we will conduct a mixed-methods observational study to evaluate changes in symptoms (BPD, PTSD, and other comorbidities) and in daily functioning.
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Patients' qualitative experiences of the treatment
Timeframe: At treatment inclusion, 6-months into treatment and 6-months post-treatment
Patients' qualitative experiences of the treatment
Timeframe: At treatment initiation, 6-months into treatment and 6-months post-treatment
Clinicians' qualitative experiences of treatment
Timeframe: At 12 months after treatment initiation and again at 24 months after treatment initiation
Participants change in BPD symptom severity
Timeframe: At treatment initiation and every 3 months during the first 12 months of treatment
Participant changes in PTSD symptoms
Timeframe: At treatment initiation and every 3 months during the first 12 months of treatment
Participant change in Dissociative experiences
Timeframe: At treatment initiation and every 3 months during the first 12 months of treatment
Participant diagnosis of borderline personality disorder
Timeframe: At treatment initation
Participant ADHD Screening
Timeframe: At treatment initiation
Participant change in depression
Timeframe: At treatment initiation and every 3 months during the first 12 months of treatment
Participant change in suicidal behaviors
Timeframe: At treatment initiation and every 3 months during the first 12 months of treatment
Participant alcohol use
Timeframe: At treatment initiation and 12-months into treatment
Patient impulsivity
Timeframe: At treatment initiation and 12-months into treatment
Participant and Clinician Working Alliance
Timeframe: Every 3 months during the first 12 months of treatment
Clinician treatment adherence to DBT-PTSD
Timeframe: Two sessions per therapist, scheduled at random points during the 12-month treatment period
Clinician competence for DBT-PTSD
Timeframe: Two sessions per therapist, scheduled at random points during the 12-month treatment period
Participant change in functioning
Timeframe: At treatment initiation and every 3 months during the first 12 months of treatment
Participant ADHD Screening
Timeframe: At treatment initiation