Adult ADHD Test. Adult Attention Deficit Hyperactivity Disorder (ADHD) is a relatively common, often unrecognized condition. It affects % of U.S. adults, but most adults with ADHD live with the symptoms and suffer the often-devastating effects of ADHD in their lives without identifying the source of their struggles. Are you habitually disorganized? Do you run late and struggle to manage money and relationships? Take this ADHD test to learn more about the symptoms of [Self-Test] ADHD Symptoms in · Adult ADHD Treatment.