An exploration of the interrelationships between central psychodynamic constructs in adolescents with mental health problems was conducted. 230 adolescents (Mage=18.0±1.9) were assessed using the Structure and the Conflict Questionnaire of the Operationalized Psychodynamic Diagnosis System in Childhood and Adolescence and the Defense Style Questionnaire for Adolescents. Controlling for the influence of gender, age, and socioeconomic status, low to moderate associations were revealed between increased psychodynamic conflict levels and immature defense styles (r=0.20 to 0.39, p<0.05 to 0.001) as wells as deficits in the personality structure and increased psychodynamic conflict levels (r=0.15 to 0.55, p<0.05 to p<0.001) or immature defense styles (r=0.30 to 0.69, p<0.001). Psychodynamic conflicts as well as defense styles could be predicted by the structural dimensions as well as age and sex (R2=0 .04 to 0.49, p<0.05 to 0.001). Theory-compliant correlations were demonstrated. The findings are particularly relevant against the background of the revision of the classification of personality functioning (ICD-11) in childhood and adolescence.