ABSTRACT Introduction: Attention Deficit/Hyperactivity Disorder (ADHD) causes significant impairment in daily life. Besides, the frequency of alcohol and substance use disorders (ASUD) in ADHD is all too often in the general population. Objective: The study aims to investigate the prevalence of ADHD symptoms in childhood and adulthood as well as ADHD-related problems in patients hospitalized for civil commitment decisions due to problems related to ASUD.