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Complex PTSD symptom trajectories in trauma-exposed adolescents: a five-year longitudinal study
Agniete Kairyte1, Evaldas Kazlauskas1, Paulina Zelviene1
1Faculty of Philosophy, Institute of Psychology, Center for Psychotraumatology, Vilnius University, Vilnius, Lithuania.
European Journal of Psychotraumatology
|August 10, 2026
Summary
This longitudinal study tracked adolescents with trauma exposure, finding that complex posttraumatic stress disorder (PTSD) symptoms remained elevated over five years for those diagnosed at the study
Area of Science:
- Psychiatry and Psychology
- Trauma Studies
- Adolescent Mental Health
Background:
- Complex posttraumatic stress disorder (PTSD) symptom profiles and risk factors are known, but its longitudinal course in adolescents is unclear.
- Previous research has not fully elucidated the developmental trajectories of complex PTSD symptoms in youth.
- Understanding the long-term course of complex PTSD is crucial for effective intervention strategies.
Purpose of the Study:
- To investigate the longitudinal trajectories of ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD symptoms.
- To examine diagnostic changes in trauma-related disorders over five years in a trauma-exposed adolescent sample.
- To identify patterns of symptom development and stability in complex PTSD among adolescents.
Main Methods:
- A five-year, three-wave longitudinal study involving 156 trauma-exposed adolescents (mean age 17.10 years).
- Self-report questionnaires were administered to assess PTSD and complex PTSD symptoms.
- Repeated Measures ANOVA was used to analyze changes in complex PTSD symptom clusters.
Main Results:
- Nearly half of participants (46.8%) met criteria for PTSD or complex PTSD at some point; however, persistent diagnoses across all waves were rare.
- Adolescents diagnosed with complex PTSD at the final wave showed consistently elevated symptom clusters over time.
- Affect dysregulation and disturbed relationship symptoms demonstrated stability in adolescents with complex PTSD at wave 3.
Conclusions:
- Complex PTSD symptoms persist over a five-year period in adolescents diagnosed with the disorder at the study's conclusion.
- Early identification of complex PTSD symptom patterns in adolescents is vital for timely trauma care and treatment.
- Further research is needed to explore complex PTSD trajectories in diverse adolescent populations.
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