The course explores the main theoretical and clinical models related to psychosocial development during adolescence and young adulthood. Particular attention will be given to understanding the psychopathological issues that emerge during these life stages, including mood disorders, anxiety disorders, eating disorders, personality disorders, addictions, self-harm, and relational difficulties. The course will analyze the major developmental tasks of these phases, with a focus on the psychological dynamics of separation and individuation, the maturation of autonomy, and the management of affective and social relationships. In addition to the psychodynamic perspective, the course integrates contributions from developmental neuroscience in order to understand the neurobiological transformations that occur during adolescence and young adulthood. Special focus will be given to brain maturation processes, particularly the development of the prefrontal cortex and its impact on emotional regulation, decision-making, and impulse control. The course will also address the risk and protective factors that influence psychological development, including traumatic experiences, family and social dynamics, as well as the challenges related to processing pubertal bodily changes and adapting to external environmental demands. Particular attention will be paid to the effects of the digital environment and online/onlife dynamics, which play an increasingly significant role in contemporary psychopathology, as well as to the new forms of addiction emerging in these developmental phases. A specific focus will be dedicated to the construction of gender identity and the psychological challenges associated with this process during adolescence and young adulthood. The course will explore diverse developmental trajectories of gender identity, potential difficulties related to gender dysphoria, and their impact on psychological well-being. Psychodynamic implications of gender identity exploration and definition will be addressed, with particular attention to the role of familial, social, and cultural contexts. Additionally, the experiences of gender minorities and the effects of social stigma will be analyzed, with the aim of developing clinically appropriate intervention strategies based on the most recent scientific evidence. The course includes theoretical lessons and practical activities in which students will have the opportunity to engage with real clinical cases and reflect on diagnoses and therapeutic plans. Laboratory activities will offer an in-depth focus on the main psychopathological disorders of adolescence and young adulthood through the reading and discussion of complex clinical cases. Students will be encouraged to develop critical analysis skills and to design appropriate psychotherapeutic interventions. Space will be dedicated to understanding countertransference implications in the treatment of disorders characteristic of these life stages. The overall goal of the course is to provide students with a comprehensive and up-to-date preparation on the main psychopathological issues of adolescence and young adulthood, with a focus on the practical application of theoretical and clinical knowledge to the treatment of the most common psychological difficulties in these developmental phases.