The clinic of psychological trauma in adolescents still requires further development, whereas it is well documented in adults. This clinic is complex, because it must take into account the nature and type of trauma (recent or not, intentional or not, situations of abuse or sexual violence, etc.), the impact on development, the contexts (social, cultural and family) in which the trauma occurs, and the various vulnerability factors associated with it. This complexity has implications for psychotherapeutic management, which needs to be tailored to the specific clinical profiles of adolescents.

Several studies have evaluated psychotherapy for traumatized adolescents, showing a positive short-term effect on the reduction of post-traumatic stress symptoms, whatever the type of psychotherapy. Few studies, however, have analyzed the therapeutic process and the common factors of change, linked mainly to the therapeutic alliance, the patient's experience and the therapist's role: key factors of change according to the international literature. In this context, the patient's experience of his or her psychotherapeutic follow-up is a source of information that has long been neglected, even though it seems essential for better investigating and understanding the complexity of the processes at play in trauma psychotherapy.

The clinic of psychological trauma in adolescents still requires further development, whereas it is well documented in adults. This clinic is complex, because it must take into account the nature and type of trauma (recent or not, intentional or not, situations of abuse or sexual violence, etc.), the impact on development, the contexts (social, cultural and family) in which the trauma occurs, and the various vulnerability factors associated with it. This complexity has implications for psychotherapeutic management, which needs to be tailored to the specific clinical profiles of adolescents.

Several studies have evaluated psychotherapy for traumatized adolescents, showing a positive short-term effect on the reduction of post-traumatic stress symptoms, whatever the type of psychotherapy. Few studies, however, have analyzed the therapeutic process and the common factors of change, linked mainly to the therapeutic alliance, the patient's experience and the therapist's role: key factors of change according to the international literature. In this context, the patient's experience of his or her psychotherapeutic follow-up is a source of information that has long been neglected, even though it seems essential for better investigating and understanding the complexity of the processes at play in trauma psychotherapy.

Inclusion Criteria:

Teenagers :

• Teenagers from 12 to 18 years old
• Post-traumatic stress disorder (DSM Criteria 5 Post-Traumatic Stress Disorder)
• Consultant at the Maison de Solenn (Maison des Adolescents)
• Affiliated to a social security scheme

Parents : parents of adolescents followed at the MDA and agreeing to participate in the study

Professionals: providing psychotherapeutic follow-up for adolescents at the MDa

Exclusion Criteria:

• Refusal of the adolescent and/or his/her family (if applicable) to participate in the study,
• Adults (all groups combined): under guardianship or curatorship, under judicial protection

Adolescents suffering from psychotrauma and psychotherapy follow-up in the Consultation Service, Maison de Solenn, Maison des adolescents de l'hôpital Cochin (AP-HP).