This course provides an in-depth exploration of the concept of addiction and substance use disorders, with a particular focus on diagnostic criteria and frameworks. It includes a detailed explanation of diagnostic assessment procedures and preventive measures used to reduce relapse occurrences and their contributing factors. The course also addresses the identification and management of the causes of addiction, alongside an introduction to the leading institutions specialized in the care of individuals with addiction. Furthermore, the course emphasizes therapeutic and counseling techniques, including psychological and clinical interventions applied to the treatment of addiction.