In the present study, the investigators propose to 1) adapt Interpersonal Psychotherapy for Adolescents (IPT-A) as an intervention for adolescents who report elevated symptoms of posttraumatic stress disorder (PTSD) and/or meet Diagnostic and Statistical Manual of Mental Disorders - Fifth Edition (DSM-5) criteria for PTSD; and 2) conduct a small open pilot study of IPT-A for PTSD. Ten adolescents ages 13 to 18 who meet DSM-5 criteria for a PTSD diagnosis or have elevated symptoms of PTSD (Child PTSD Symptom Scale \[CPSS-5\] ≥ 31) will be treated with 14-16 weeks of an adapted version of IPT-A. If participants have evidenced a decrease in PTSD symptoms (CPSS-5 \< 31) they will also receive 3 months of once a month maintenance treatment and be assessed by a clinician evaluator at the conclusion of the 3 monthly sessions. If participants have not evidenced a decrease in PTSD symptoms (CPSS-5 ≥ 31), they will be referred for alternative treatments in the community and be assessed by a clinician evaluator 3 months following the completion of IPT-A. All evaluations and therapy sessions will be done over telehealth platform until able to be done in person.
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Change in Child PTSD Symptom Scale (CPSS-5)
Timeframe: baseline, week 7, between weeks 14-16 (post-intervention), and at the 3 month follow-up, each time rating the 4 weeks prior to the assessment date.
Change in Clinician-Administered PTSD Scale for DSM-5, Child/Adolescent Version (CAPS-CA-5)
Timeframe: baseline, between weeks 14-16 (post-intervention), and at the 3 month follow-up, each time rating the 4 weeks prior to the assessment date.
Change in Clinical Global Scale of Illness - Improvement/Severity (CGI-I/S)
Timeframe: baseline, week 7, between weeks 14-16 (post-intervention), and at the 3 month follow-up, each time rating the 2 weeks prior to the assessment date