Psychological Treatment for Adolescents With Self-injury Within Intensive Mental Health Outpatient Services: Randomized Controlled Pilot Trial

The overarching aim of this study is to develop and evaluate a new blended treatment format, which combines face-to-face and digital treatment components, for Emotion Regulation Individual Therapy for Adolescents (ERITA). This brief, transdiagnostic, and blended treatment targeting nonsuicidal self-injury (NSSI) - referred to as blended ERITA - will be specifically designed for adolescents with NSSI and low levels of functioning within intensive outpatient psychiatric services. The specific purpose of this pilot trial is to investigate feasibility in preparation for a larger trial.

Inclusion Criteria: * 12-17 years old * At least one NSSI episode in the past three months * A parent willing to engage in the parent program * Global functioning corresponding to a rating ≤50 of the Children's Global Assessment Scale (CGAS) Exclusion Criteria: * Immediate suicide risk * Social problems needing immediate intervention (e.g., violence within the family) * Other psychiatric disorder or symptoms requiring immediate treatment (e.g., severe anorexia nervosa, acute psychosis, severe substance abuse) * Ongoing dialectical behavior therapy for adolescents