Evidence shows that symptoms and difficulties related to Attention Deficit Hyperactivity Disorder (ADHD) can continue into adulthood. ADHD is often complicated by the presence of comorbid conditions including mood and anxiety disorders, substance abuse, and antisocial disorders. We present a brief overview of ADHD in adulthood and the Swedish translation of the Adult ADHD Self-Report Scales (ASRS). We describe the current use of the ASRS in screening studies and in clinical settings in Sweden.